/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:47:39,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:47:39,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:47:39,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:47:39,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:47:39,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:47:39,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:47:39,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:47:39,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:47:39,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:47:39,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:47:39,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:47:39,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:47:39,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:47:39,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:47:39,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:47:39,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:47:39,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:47:39,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:47:39,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:47:39,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:47:39,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:47:39,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:47:39,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:47:39,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:47:39,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:47:39,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:47:39,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:47:39,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:47:39,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:47:39,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:47:39,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:47:39,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:47:39,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:47:39,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:47:39,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:47:39,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:47:39,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:47:39,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:47:39,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:47:39,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:47:39,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:47:39,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:47:39,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:47:39,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:47:39,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:47:39,636 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:47:39,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:47:39,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:47:39,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:47:39,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:47:39,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:47:39,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:47:39,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:47:39,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:47:39,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:47:39,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:47:39,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:47:39,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:47:39,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:47:39,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:47:39,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:47:39,640 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:47:39,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:47:39,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:47:39,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:47:39,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:47:39,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:47:39,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:47:39,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:47:39,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:47:39,941 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:47:39,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-09 17:47:40,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e4077c/ca3756e64cb9478c9074bdc39ccae5e7/FLAGbe2402e45 [2020-10-09 17:47:40,521 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:47:40,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-09 17:47:40,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e4077c/ca3756e64cb9478c9074bdc39ccae5e7/FLAGbe2402e45 [2020-10-09 17:47:40,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4e4077c/ca3756e64cb9478c9074bdc39ccae5e7 [2020-10-09 17:47:40,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:47:40,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:47:40,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:40,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:47:40,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:47:40,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:40" (1/1) ... [2020-10-09 17:47:40,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:40, skipping insertion in model container [2020-10-09 17:47:40,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:47:40" (1/1) ... [2020-10-09 17:47:40,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:47:40,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:47:41,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:41,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:47:41,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:47:41,534 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:47:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41 WrapperNode [2020-10-09 17:47:41,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:47:41,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:41,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:47:41,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:47:41,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:47:41,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:47:41,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:47:41,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:47:41,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (1/1) ... [2020-10-09 17:47:41,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:47:41,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:47:41,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:47:41,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:47:41,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (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 [2020-10-09 17:47:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:47:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:47:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:47:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:47:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:47:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:47:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:47:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:47:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:47:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:47:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 17:47:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 17:47:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:47:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:47:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:47:41,698 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:47:42,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:47:42,077 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:47:42,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:42 BoogieIcfgContainer [2020-10-09 17:47:42,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:47:42,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:47:42,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:47:42,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:47:42,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:47:40" (1/3) ... [2020-10-09 17:47:42,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c0fd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:42, skipping insertion in model container [2020-10-09 17:47:42,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:47:41" (2/3) ... [2020-10-09 17:47:42,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c0fd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:47:42, skipping insertion in model container [2020-10-09 17:47:42,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:47:42" (3/3) ... [2020-10-09 17:47:42,088 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-09 17:47:42,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:47:42,110 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:47:42,111 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:47:42,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,149 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,149 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,150 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,150 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,151 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,151 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,151 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,151 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,156 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,156 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,156 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,157 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,172 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,172 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,172 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,172 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:47:42,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 17:47:42,220 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:47:42,221 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:47:42,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:47:42,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:47:42,221 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:47:42,221 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:47:42,221 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:47:42,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:47:42,236 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 17:47:42,290 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-09 17:47:42,290 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:42,296 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-09 17:47:42,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 17:47:42,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 63 transitions, 138 flow [2020-10-09 17:47:42,335 INFO L129 PetriNetUnfolder]: 1/62 cut-off events. [2020-10-09 17:47:42,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:42,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:42,337 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:42,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 1 times [2020-10-09 17:47:42,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:42,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913117913] [2020-10-09 17:47:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:42,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:42,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:42,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:42,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913117913] [2020-10-09 17:47:42,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:42,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:42,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966573730] [2020-10-09 17:47:42,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:42,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:42,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:42,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:43,017 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 80 [2020-10-09 17:47:43,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 138 flow. Second operand 8 states. [2020-10-09 17:47:43,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:43,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 80 [2020-10-09 17:47:43,025 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:43,278 INFO L129 PetriNetUnfolder]: 18/140 cut-off events. [2020-10-09 17:47:43,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:47:43,282 INFO L80 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 140 events. 18/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 462 event pairs, 0 based on Foata normal form. 8/145 useless extension candidates. Maximal degree in co-relation 188. Up to 15 conditions per place. [2020-10-09 17:47:43,285 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 10 selfloop transitions, 5 changer transitions 24/91 dead transitions. [2020-10-09 17:47:43,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 270 flow [2020-10-09 17:47:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2020-10-09 17:47:43,307 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9048076923076923 [2020-10-09 17:47:43,308 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2020-10-09 17:47:43,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2020-10-09 17:47:43,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:43,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2020-10-09 17:47:43,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:43,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:43,333 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:43,335 INFO L185 Difference]: Start difference. First operand has 75 places, 63 transitions, 138 flow. Second operand 13 states and 941 transitions. [2020-10-09 17:47:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 270 flow [2020-10-09 17:47:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 266 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 17:47:43,347 INFO L241 Difference]: Finished difference. Result has 94 places, 63 transitions, 172 flow [2020-10-09 17:47:43,350 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=172, PETRI_PLACES=94, PETRI_TRANSITIONS=63} [2020-10-09 17:47:43,351 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2020-10-09 17:47:43,352 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 63 transitions, 172 flow [2020-10-09 17:47:43,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:43,352 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:43,352 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:43,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:47:43,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1354739076, now seen corresponding path program 1 times [2020-10-09 17:47:43,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:43,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310466253] [2020-10-09 17:47:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:43,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:43,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:43,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:43,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310466253] [2020-10-09 17:47:43,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:43,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:43,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162608022] [2020-10-09 17:47:43,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:43,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:43,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:43,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:43,847 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 80 [2020-10-09 17:47:43,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 63 transitions, 172 flow. Second operand 8 states. [2020-10-09 17:47:43,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:43,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 80 [2020-10-09 17:47:43,849 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:43,944 INFO L129 PetriNetUnfolder]: 3/94 cut-off events. [2020-10-09 17:47:43,944 INFO L130 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2020-10-09 17:47:43,945 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 94 events. 3/94 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 212 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2020-10-09 17:47:43,946 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 6 selfloop transitions, 2 changer transitions 10/73 dead transitions. [2020-10-09 17:47:43,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 73 transitions, 256 flow [2020-10-09 17:47:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:47:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:47:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 650 transitions. [2020-10-09 17:47:43,950 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2020-10-09 17:47:43,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 650 transitions. [2020-10-09 17:47:43,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 650 transitions. [2020-10-09 17:47:43,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:43,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 650 transitions. [2020-10-09 17:47:43,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:47:43,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:47:43,955 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:47:43,955 INFO L185 Difference]: Start difference. First operand has 94 places, 63 transitions, 172 flow. Second operand 9 states and 650 transitions. [2020-10-09 17:47:43,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 73 transitions, 256 flow [2020-10-09 17:47:43,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 214 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:47:43,960 INFO L241 Difference]: Finished difference. Result has 90 places, 63 transitions, 174 flow [2020-10-09 17:47:43,960 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2020-10-09 17:47:43,961 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2020-10-09 17:47:43,961 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 174 flow [2020-10-09 17:47:43,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:43,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:43,962 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:44,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:47:44,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:44,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:44,177 INFO L82 PathProgramCache]: Analyzing trace with hash 66021797, now seen corresponding path program 1 times [2020-10-09 17:47:44,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:44,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894899679] [2020-10-09 17:47:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:44,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:44,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:44,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:44,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894899679] [2020-10-09 17:47:44,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:44,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:44,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67696128] [2020-10-09 17:47:44,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:44,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:44,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:44,561 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 80 [2020-10-09 17:47:44,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 174 flow. Second operand 8 states. [2020-10-09 17:47:44,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:44,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 80 [2020-10-09 17:47:44,562 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:44,732 INFO L129 PetriNetUnfolder]: 36/255 cut-off events. [2020-10-09 17:47:44,732 INFO L130 PetriNetUnfolder]: For 156/166 co-relation queries the response was YES. [2020-10-09 17:47:44,735 INFO L80 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 255 events. 36/255 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1420 event pairs, 0 based on Foata normal form. 10/258 useless extension candidates. Maximal degree in co-relation 476. Up to 28 conditions per place. [2020-10-09 17:47:44,736 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 10 selfloop transitions, 5 changer transitions 23/92 dead transitions. [2020-10-09 17:47:44,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 356 flow [2020-10-09 17:47:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:47:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:47:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 938 transitions. [2020-10-09 17:47:44,741 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9019230769230769 [2020-10-09 17:47:44,741 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 938 transitions. [2020-10-09 17:47:44,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 938 transitions. [2020-10-09 17:47:44,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:44,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 938 transitions. [2020-10-09 17:47:44,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:47:44,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:47:44,747 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:47:44,748 INFO L185 Difference]: Start difference. First operand has 90 places, 63 transitions, 174 flow. Second operand 13 states and 938 transitions. [2020-10-09 17:47:44,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 356 flow [2020-10-09 17:47:44,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 304 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:47:44,754 INFO L241 Difference]: Finished difference. Result has 99 places, 65 transitions, 200 flow [2020-10-09 17:47:44,754 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=65} [2020-10-09 17:47:44,755 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2020-10-09 17:47:44,755 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 65 transitions, 200 flow [2020-10-09 17:47:44,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:44,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:44,755 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:44,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:47:44,977 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1139027494, now seen corresponding path program 1 times [2020-10-09 17:47:44,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:44,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88490198] [2020-10-09 17:47:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:45,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:47:45,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:45,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:45,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:45,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88490198] [2020-10-09 17:47:45,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:45,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:45,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199626887] [2020-10-09 17:47:45,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:45,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:45,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:45,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:45,294 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 80 [2020-10-09 17:47:45,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 65 transitions, 200 flow. Second operand 8 states. [2020-10-09 17:47:45,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:45,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 80 [2020-10-09 17:47:45,295 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:45,384 INFO L129 PetriNetUnfolder]: 6/161 cut-off events. [2020-10-09 17:47:45,384 INFO L130 PetriNetUnfolder]: For 199/209 co-relation queries the response was YES. [2020-10-09 17:47:45,385 INFO L80 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 161 events. 6/161 cut-off events. For 199/209 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 702 event pairs, 0 based on Foata normal form. 4/161 useless extension candidates. Maximal degree in co-relation 311. Up to 22 conditions per place. [2020-10-09 17:47:45,386 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 6 selfloop transitions, 2 changer transitions 10/75 dead transitions. [2020-10-09 17:47:45,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 290 flow [2020-10-09 17:47:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:47:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:47:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 650 transitions. [2020-10-09 17:47:45,390 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2020-10-09 17:47:45,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 650 transitions. [2020-10-09 17:47:45,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 650 transitions. [2020-10-09 17:47:45,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:45,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 650 transitions. [2020-10-09 17:47:45,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:47:45,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:47:45,395 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:47:45,395 INFO L185 Difference]: Start difference. First operand has 99 places, 65 transitions, 200 flow. Second operand 9 states and 650 transitions. [2020-10-09 17:47:45,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 290 flow [2020-10-09 17:47:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 248 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:47:45,399 INFO L241 Difference]: Finished difference. Result has 96 places, 65 transitions, 202 flow [2020-10-09 17:47:45,400 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=96, PETRI_TRANSITIONS=65} [2020-10-09 17:47:45,400 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2020-10-09 17:47:45,400 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 65 transitions, 202 flow [2020-10-09 17:47:45,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:45,400 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:45,401 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:45,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:47:45,614 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash 510987559, now seen corresponding path program 1 times [2020-10-09 17:47:45,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:45,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426248933] [2020-10-09 17:47:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:45,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:45,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:45,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:45,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426248933] [2020-10-09 17:47:45,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:45,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:47:45,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686661252] [2020-10-09 17:47:45,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:45,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:45,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:45,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:46,075 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 80 [2020-10-09 17:47:46,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 65 transitions, 202 flow. Second operand 10 states. [2020-10-09 17:47:46,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:46,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 80 [2020-10-09 17:47:46,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:46,313 INFO L129 PetriNetUnfolder]: 14/295 cut-off events. [2020-10-09 17:47:46,313 INFO L130 PetriNetUnfolder]: For 441/576 co-relation queries the response was YES. [2020-10-09 17:47:46,316 INFO L80 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 295 events. 14/295 cut-off events. For 441/576 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1791 event pairs, 0 based on Foata normal form. 14/303 useless extension candidates. Maximal degree in co-relation 583. Up to 23 conditions per place. [2020-10-09 17:47:46,317 INFO L132 encePairwiseOnDemand]: 71/80 looper letters, 10 selfloop transitions, 7 changer transitions 18/87 dead transitions. [2020-10-09 17:47:46,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 87 transitions, 397 flow [2020-10-09 17:47:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 17:47:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-09 17:47:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1177 transitions. [2020-10-09 17:47:46,322 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8654411764705883 [2020-10-09 17:47:46,322 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1177 transitions. [2020-10-09 17:47:46,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1177 transitions. [2020-10-09 17:47:46,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:46,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1177 transitions. [2020-10-09 17:47:46,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-09 17:47:46,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-09 17:47:46,330 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-09 17:47:46,330 INFO L185 Difference]: Start difference. First operand has 96 places, 65 transitions, 202 flow. Second operand 17 states and 1177 transitions. [2020-10-09 17:47:46,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 87 transitions, 397 flow [2020-10-09 17:47:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 87 transitions, 341 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:47:46,338 INFO L241 Difference]: Finished difference. Result has 109 places, 65 transitions, 227 flow [2020-10-09 17:47:46,338 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=227, PETRI_PLACES=109, PETRI_TRANSITIONS=65} [2020-10-09 17:47:46,339 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 34 predicate places. [2020-10-09 17:47:46,339 INFO L481 AbstractCegarLoop]: Abstraction has has 109 places, 65 transitions, 227 flow [2020-10-09 17:47:46,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:46,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:46,339 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:46,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:47:46,554 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1577618521, now seen corresponding path program 2 times [2020-10-09 17:47:46,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:46,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200774513] [2020-10-09 17:47:46,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:46,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:47:46,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:46,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:47:46,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:46,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:46,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:46,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200774513] [2020-10-09 17:47:46,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:46,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:47:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667492902] [2020-10-09 17:47:46,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:46,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:46,891 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 80 [2020-10-09 17:47:46,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 65 transitions, 227 flow. Second operand 10 states. [2020-10-09 17:47:46,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:46,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 80 [2020-10-09 17:47:46,893 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:47,119 INFO L129 PetriNetUnfolder]: 14/279 cut-off events. [2020-10-09 17:47:47,120 INFO L130 PetriNetUnfolder]: For 528/571 co-relation queries the response was YES. [2020-10-09 17:47:47,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 279 events. 14/279 cut-off events. For 528/571 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1711 event pairs, 0 based on Foata normal form. 15/290 useless extension candidates. Maximal degree in co-relation 597. Up to 26 conditions per place. [2020-10-09 17:47:47,123 INFO L132 encePairwiseOnDemand]: 71/80 looper letters, 10 selfloop transitions, 7 changer transitions 18/87 dead transitions. [2020-10-09 17:47:47,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 87 transitions, 444 flow [2020-10-09 17:47:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 17:47:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-09 17:47:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1177 transitions. [2020-10-09 17:47:47,129 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8654411764705883 [2020-10-09 17:47:47,129 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1177 transitions. [2020-10-09 17:47:47,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1177 transitions. [2020-10-09 17:47:47,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:47,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1177 transitions. [2020-10-09 17:47:47,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-09 17:47:47,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-09 17:47:47,142 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-09 17:47:47,142 INFO L185 Difference]: Start difference. First operand has 109 places, 65 transitions, 227 flow. Second operand 17 states and 1177 transitions. [2020-10-09 17:47:47,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 87 transitions, 444 flow [2020-10-09 17:47:47,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 336 flow, removed 45 selfloop flow, removed 15 redundant places. [2020-10-09 17:47:47,149 INFO L241 Difference]: Finished difference. Result has 110 places, 65 transitions, 226 flow [2020-10-09 17:47:47,149 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=65} [2020-10-09 17:47:47,149 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2020-10-09 17:47:47,150 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 65 transitions, 226 flow [2020-10-09 17:47:47,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:47,150 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:47,150 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:47,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:47:47,362 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:47,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2020058683, now seen corresponding path program 3 times [2020-10-09 17:47:47,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:47,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647843066] [2020-10-09 17:47:47,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:47,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-09 17:47:47,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:47:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:47:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:47,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:47,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:47,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647843066] [2020-10-09 17:47:47,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:47,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:47:47,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808635983] [2020-10-09 17:47:47,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:47:47,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:47,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:47:47,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:47:47,626 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 80 [2020-10-09 17:47:47,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 65 transitions, 226 flow. Second operand 8 states. [2020-10-09 17:47:47,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:47,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 80 [2020-10-09 17:47:47,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:47,935 INFO L129 PetriNetUnfolder]: 641/1358 cut-off events. [2020-10-09 17:47:47,935 INFO L130 PetriNetUnfolder]: For 314/315 co-relation queries the response was YES. [2020-10-09 17:47:47,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1358 events. 641/1358 cut-off events. For 314/315 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9663 event pairs, 7 based on Foata normal form. 44/1344 useless extension candidates. Maximal degree in co-relation 2573. Up to 424 conditions per place. [2020-10-09 17:47:47,947 INFO L132 encePairwiseOnDemand]: 70/80 looper letters, 12 selfloop transitions, 11 changer transitions 35/112 dead transitions. [2020-10-09 17:47:47,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 436 flow [2020-10-09 17:47:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:47:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:47:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 853 transitions. [2020-10-09 17:47:47,951 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8885416666666667 [2020-10-09 17:47:47,951 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 853 transitions. [2020-10-09 17:47:47,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 853 transitions. [2020-10-09 17:47:47,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:47,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 853 transitions. [2020-10-09 17:47:47,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:47:47,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:47:47,960 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:47:47,960 INFO L185 Difference]: Start difference. First operand has 110 places, 65 transitions, 226 flow. Second operand 12 states and 853 transitions. [2020-10-09 17:47:47,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 436 flow [2020-10-09 17:47:47,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 112 transitions, 394 flow, removed 12 selfloop flow, removed 15 redundant places. [2020-10-09 17:47:47,967 INFO L241 Difference]: Finished difference. Result has 104 places, 73 transitions, 306 flow [2020-10-09 17:47:47,968 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2020-10-09 17:47:47,968 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2020-10-09 17:47:47,968 INFO L481 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 306 flow [2020-10-09 17:47:47,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:47:47,968 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:47:47,969 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:47:48,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:47:48,186 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:47:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:47:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1268172472, now seen corresponding path program 1 times [2020-10-09 17:47:48,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:47:48,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070415523] [2020-10-09 17:47:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-09 17:47:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:47:48,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:47:48,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:47:48,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:47:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:48,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:47:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:47:48,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070415523] [2020-10-09 17:47:48,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:47:48,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:47:48,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397818694] [2020-10-09 17:47:48,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:47:48,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:47:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:47:48,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:47:48,428 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 80 [2020-10-09 17:47:48,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 306 flow. Second operand 10 states. [2020-10-09 17:47:48,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:47:48,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 80 [2020-10-09 17:47:48,430 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:47:48,734 INFO L129 PetriNetUnfolder]: 240/628 cut-off events. [2020-10-09 17:47:48,734 INFO L130 PetriNetUnfolder]: For 3740/4102 co-relation queries the response was YES. [2020-10-09 17:47:48,737 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 628 events. 240/628 cut-off events. For 3740/4102 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3929 event pairs, 0 based on Foata normal form. 81/693 useless extension candidates. Maximal degree in co-relation 2902. Up to 313 conditions per place. [2020-10-09 17:47:48,738 INFO L132 encePairwiseOnDemand]: 70/80 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2020-10-09 17:47:48,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 730 flow [2020-10-09 17:47:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 17:47:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-09 17:47:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 977 transitions. [2020-10-09 17:47:48,744 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8723214285714286 [2020-10-09 17:47:48,744 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 977 transitions. [2020-10-09 17:47:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 977 transitions. [2020-10-09 17:47:48,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:47:48,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 977 transitions. [2020-10-09 17:47:48,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-09 17:47:48,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-09 17:47:48,752 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-09 17:47:48,752 INFO L185 Difference]: Start difference. First operand has 104 places, 73 transitions, 306 flow. Second operand 14 states and 977 transitions. [2020-10-09 17:47:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 730 flow [2020-10-09 17:47:48,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 583 flow, removed 62 selfloop flow, removed 11 redundant places. [2020-10-09 17:47:48,763 INFO L241 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2020-10-09 17:47:48,763 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2020-10-09 17:47:48,763 INFO L341 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2020-10-09 17:47:48,764 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2020-10-09 17:47:48,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:47:48,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 17:47:48,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:47:48 BasicIcfg [2020-10-09 17:47:48,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:47:48,992 INFO L168 Benchmark]: Toolchain (without parser) took 8121.89 ms. Allocated memory was 251.1 MB in the beginning and 428.3 MB in the end (delta: 177.2 MB). Free memory was 206.3 MB in the beginning and 189.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 193.7 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:48,993 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:47:48,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.07 ms. Allocated memory was 251.1 MB in the beginning and 313.0 MB in the end (delta: 61.9 MB). Free memory was 206.3 MB in the beginning and 266.1 MB in the end (delta: -59.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:48,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.33 ms. Allocated memory is still 313.0 MB. Free memory was 266.1 MB in the beginning and 263.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:48,995 INFO L168 Benchmark]: Boogie Preprocessor took 27.86 ms. Allocated memory is still 313.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:48,996 INFO L168 Benchmark]: RCFGBuilder took 466.79 ms. Allocated memory is still 313.0 MB. Free memory was 261.1 MB in the beginning and 236.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:48,997 INFO L168 Benchmark]: TraceAbstraction took 6902.22 ms. Allocated memory was 313.0 MB in the beginning and 428.3 MB in the end (delta: 115.3 MB). Free memory was 236.7 MB in the beginning and 189.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 162.3 MB. Max. memory is 14.2 GB. [2020-10-09 17:47:49,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 669.07 ms. Allocated memory was 251.1 MB in the beginning and 313.0 MB in the end (delta: 61.9 MB). Free memory was 206.3 MB in the beginning and 266.1 MB in the end (delta: -59.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.33 ms. Allocated memory is still 313.0 MB. Free memory was 266.1 MB in the beginning and 263.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.86 ms. Allocated memory is still 313.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 466.79 ms. Allocated memory is still 313.0 MB. Free memory was 261.1 MB in the beginning and 236.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6902.22 ms. Allocated memory was 313.0 MB in the beginning and 428.3 MB in the end (delta: 115.3 MB). Free memory was 236.7 MB in the beginning and 189.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 162.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 352 SDslu, 591 SDs, 0 SdLazy, 607 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 768 GetRequests, 632 SyntacticMatches, 14 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 700 ConstructedInterpolants, 0 QuantifiedInterpolants, 86808 SizeOfPredicates, 68 NumberOfNonLiveVariables, 984 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...