/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/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:14:55,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:14:55,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:14:55,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:14:55,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:14:55,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:14:55,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:14:55,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:14:55,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:14:55,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:14:55,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:14:55,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:14:55,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:14:55,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:14:55,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:14:55,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:14:55,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:14:55,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:14:55,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:14:55,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:14:55,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:14:55,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:14:55,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:14:55,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:14:55,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:14:55,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:14:55,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:14:55,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:14:55,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:14:55,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:14:55,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:14:55,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:14:55,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:14:55,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:14:55,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:14:55,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:14:55,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:14:55,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:14:55,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:14:55,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:14:55,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:14:55,570 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 18:14:55,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:14:55,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:14:55,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:14:55,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:14:55,608 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:14:55,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:14:55,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:14:55,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:14:55,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:14:55,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:14:55,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:14:55,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:14:55,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:14:55,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:14:55,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:14:55,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:14:55,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:14:55,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:14:55,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:14:55,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:14:55,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:14:55,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:14:55,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:14:55,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:14:55,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:14:55,613 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:14:55,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:14:55,614 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:14:55,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:14:55,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:14:55,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:14:55,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:14:55,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:14:55,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:14:55,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:14:55,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-09 18:14:55,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763bca534/89a5cc74209c4a51b8d306b6a74de7be/FLAG8c468cc77 [2020-10-09 18:14:56,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:14:56,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2020-10-09 18:14:56,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763bca534/89a5cc74209c4a51b8d306b6a74de7be/FLAG8c468cc77 [2020-10-09 18:14:56,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763bca534/89a5cc74209c4a51b8d306b6a74de7be [2020-10-09 18:14:56,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:14:56,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:14:56,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:56,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:14:56,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:14:56,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:56" (1/1) ... [2020-10-09 18:14:56,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:56, skipping insertion in model container [2020-10-09 18:14:56,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:56" (1/1) ... [2020-10-09 18:14:56,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:14:56,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:14:57,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:57,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:14:57,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:57,508 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:14:57,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57 WrapperNode [2020-10-09 18:14:57,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:57,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:57,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:14:57,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:14:57,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:57,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:14:57,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:14:57,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:14:57,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (1/1) ... [2020-10-09 18:14:57,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:14:57,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:14:57,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:14:57,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:14:57,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (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 18:14:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:14:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:14:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:14:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:14:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:14:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:14:57,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:14:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:14:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:14:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:14:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 18:14:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 18:14:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:14:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:14:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:14:57,660 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 18:14:58,026 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:14:58,026 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:14:58,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:58 BoogieIcfgContainer [2020-10-09 18:14:58,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:14:58,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:14:58,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:14:58,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:14:58,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:14:56" (1/3) ... [2020-10-09 18:14:58,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5d0e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:58, skipping insertion in model container [2020-10-09 18:14:58,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:57" (2/3) ... [2020-10-09 18:14:58,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5d0e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:58, skipping insertion in model container [2020-10-09 18:14:58,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:58" (3/3) ... [2020-10-09 18:14:58,037 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2020-10-09 18:14:58,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:14:58,057 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:14:58,058 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:14:58,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,094 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,094 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,094 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,094 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,095 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,099 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,099 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,099 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,107 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,107 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,107 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,108 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,110 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,110 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:58,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 18:14:58,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:14:58,148 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:14:58,149 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:14:58,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:14:58,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:14:58,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:14:58,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:14:58,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:14:58,162 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:58,219 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 18:14:58,220 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:58,226 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 18:14:58,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:58,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-09 18:14:58,257 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2020-10-09 18:14:58,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:58,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:58,259 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 18:14:58,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-10-09 18:14:58,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:58,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496178522] [2020-10-09 18:14:58,281 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 18:14:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:58,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:58,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:58,543 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 18:14:58,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:58,616 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 18:14:58,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496178522] [2020-10-09 18:14:58,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:58,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:58,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612562196] [2020-10-09 18:14:58,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:58,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:58,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:58,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:58,877 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:58,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 150 flow. Second operand 8 states. [2020-10-09 18:14:58,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:58,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:58,881 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:58,989 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-09 18:14:58,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:58,990 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-09 18:14:58,992 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2020-10-09 18:14:58,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 706 transitions. [2020-10-09 18:14:59,012 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2020-10-09 18:14:59,013 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 706 transitions. [2020-10-09 18:14:59,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 706 transitions. [2020-10-09 18:14:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:59,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 706 transitions. [2020-10-09 18:14:59,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:59,035 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:59,037 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 150 flow. Second operand 9 states and 706 transitions. [2020-10-09 18:14:59,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:59,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 18:14:59,052 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:59,055 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:59,056 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:59,056 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:59,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:59,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:59,057 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 18:14:59,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:14:59,269 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1950055099, now seen corresponding path program 1 times [2020-10-09 18:14:59,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:59,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800053647] [2020-10-09 18:14:59,273 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 18:14:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:59,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:59,361 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:59,394 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 18:14:59,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:59,447 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 18:14:59,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800053647] [2020-10-09 18:14:59,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:59,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:59,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975099015] [2020-10-09 18:14:59,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:59,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:59,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:59,560 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:59,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 162 flow. Second operand 8 states. [2020-10-09 18:14:59,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:59,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:59,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:59,654 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:59,654 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-09 18:14:59,655 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 82 events. 3/82 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2020-10-09 18:14:59,656 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:59,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:59,660 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:59,660 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:59,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:59,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:59,666 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:59,666 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 162 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:59,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 204 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:59,670 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:59,671 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:59,671 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:59,672 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:59,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:59,672 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:59,672 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 18:14:59,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:14:59,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:59,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash -981304954, now seen corresponding path program 1 times [2020-10-09 18:14:59,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:59,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062278033] [2020-10-09 18:14:59,893 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 18:14:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:59,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:59,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:59,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:00,017 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 18:15:00,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:00,062 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 18:15:00,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062278033] [2020-10-09 18:15:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:15:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180531510] [2020-10-09 18:15:00,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:15:00,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:15:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:15:00,190 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:15:00,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 166 flow. Second operand 8 states. [2020-10-09 18:15:00,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:00,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:15:00,192 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:00,300 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:15:00,300 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-09 18:15:00,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 82 events. 3/82 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-09 18:15:00,302 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:15:00,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 242 flow [2020-10-09 18:15:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:15:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:15:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:15:00,305 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:15:00,306 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:15:00,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:15:00,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:00,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:15:00,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:15:00,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:15:00,310 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:15:00,311 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 166 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:15:00,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 242 flow [2020-10-09 18:15:00,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 210 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:15:00,314 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 170 flow [2020-10-09 18:15:00,314 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2020-10-09 18:15:00,315 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2020-10-09 18:15:00,315 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 170 flow [2020-10-09 18:15:00,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:15:00,315 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:00,315 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 18:15:00,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:15:00,536 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1240123719, now seen corresponding path program 1 times [2020-10-09 18:15:00,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:00,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941839990] [2020-10-09 18:15:00,539 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 18:15:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:00,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:15:00,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:00,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:00,705 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 18:15:00,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:00,757 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 18:15:00,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941839990] [2020-10-09 18:15:00,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:00,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:15:00,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335968089] [2020-10-09 18:15:00,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:15:00,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:15:00,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:15:00,919 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:15:00,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 170 flow. Second operand 8 states. [2020-10-09 18:15:00,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:00,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:15:00,920 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:00,999 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:15:00,999 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-10-09 18:15:01,000 INFO L80 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 82 events. 3/82 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 129. Up to 7 conditions per place. [2020-10-09 18:15:01,001 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:15:01,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 77 transitions, 248 flow [2020-10-09 18:15:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:15:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:15:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:15:01,004 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:15:01,004 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:15:01,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:15:01,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:01,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:15:01,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:15:01,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:15:01,009 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:15:01,009 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 170 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:15:01,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 77 transitions, 248 flow [2020-10-09 18:15:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 216 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:15:01,012 INFO L241 Difference]: Finished difference. Result has 94 places, 67 transitions, 174 flow [2020-10-09 18:15:01,013 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2020-10-09 18:15:01,013 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2020-10-09 18:15:01,013 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 174 flow [2020-10-09 18:15:01,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:15:01,013 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:01,014 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, 1, 1] [2020-10-09 18:15:01,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:15:01,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 564898888, now seen corresponding path program 1 times [2020-10-09 18:15:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:01,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652709822] [2020-10-09 18:15:01,227 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 18:15:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:01,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:01,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:01,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:01,361 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 18:15:01,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:01,416 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 18:15:01,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652709822] [2020-10-09 18:15:01,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:01,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:01,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682782074] [2020-10-09 18:15:01,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:01,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:01,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:01,669 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:01,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 174 flow. Second operand 9 states. [2020-10-09 18:15:01,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:01,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:01,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:01,804 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:15:01,805 INFO L130 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2020-10-09 18:15:01,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 88 events. 4/88 cut-off events. For 44/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 149. Up to 7 conditions per place. [2020-10-09 18:15:01,807 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:15:01,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 277 flow [2020-10-09 18:15:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:15:01,812 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:15:01,812 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:01,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:01,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:01,817 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:01,817 INFO L185 Difference]: Start difference. First operand has 94 places, 67 transitions, 174 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:15:01,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 277 flow [2020-10-09 18:15:01,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 243 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:15:01,823 INFO L241 Difference]: Finished difference. Result has 97 places, 67 transitions, 188 flow [2020-10-09 18:15:01,824 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2020-10-09 18:15:01,824 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2020-10-09 18:15:01,824 INFO L481 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 188 flow [2020-10-09 18:15:01,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:01,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:01,825 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, 1, 1, 1] [2020-10-09 18:15:02,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:15:02,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:02,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:02,038 INFO L82 PathProgramCache]: Analyzing trace with hash -304625474, now seen corresponding path program 1 times [2020-10-09 18:15:02,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:02,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582407194] [2020-10-09 18:15:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:15:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:02,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:02,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:02,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:02,227 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 18:15:02,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:02,286 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 18:15:02,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582407194] [2020-10-09 18:15:02,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:02,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:02,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392126068] [2020-10-09 18:15:02,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:02,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:02,512 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:02,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 188 flow. Second operand 9 states. [2020-10-09 18:15:02,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:02,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:02,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:02,647 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2020-10-09 18:15:02,647 INFO L130 PetriNetUnfolder]: For 87/113 co-relation queries the response was YES. [2020-10-09 18:15:02,648 INFO L80 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 93 events. 4/93 cut-off events. For 87/113 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 169. Up to 7 conditions per place. [2020-10-09 18:15:02,648 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:15:02,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 79 transitions, 297 flow [2020-10-09 18:15:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:15:02,652 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:15:02,652 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:15:02,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:15:02,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:02,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:15:02,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:02,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:02,657 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:02,657 INFO L185 Difference]: Start difference. First operand has 97 places, 67 transitions, 188 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:15:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 79 transitions, 297 flow [2020-10-09 18:15:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 79 transitions, 247 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:15:02,661 INFO L241 Difference]: Finished difference. Result has 98 places, 67 transitions, 192 flow [2020-10-09 18:15:02,662 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2020-10-09 18:15:02,662 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2020-10-09 18:15:02,662 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 192 flow [2020-10-09 18:15:02,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:02,662 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:02,662 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, 1, 1, 1, 1] [2020-10-09 18:15:02,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:15:02,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1847431572, now seen corresponding path program 1 times [2020-10-09 18:15:02,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:02,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453082659] [2020-10-09 18:15:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:15:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:02,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:02,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:02,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:02,964 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 18:15:02,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:03,021 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 18:15:03,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453082659] [2020-10-09 18:15:03,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:03,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:03,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146859166] [2020-10-09 18:15:03,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:03,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:03,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:03,208 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:03,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 192 flow. Second operand 9 states. [2020-10-09 18:15:03,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:03,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:03,210 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:03,336 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:15:03,337 INFO L130 PetriNetUnfolder]: For 79/82 co-relation queries the response was YES. [2020-10-09 18:15:03,337 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 4/88 cut-off events. For 79/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 161. Up to 7 conditions per place. [2020-10-09 18:15:03,338 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:15:03,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 79 transitions, 301 flow [2020-10-09 18:15:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:15:03,344 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:15:03,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:15:03,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:15:03,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:03,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:15:03,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:03,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:03,349 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:03,349 INFO L185 Difference]: Start difference. First operand has 98 places, 67 transitions, 192 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:15:03,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 79 transitions, 301 flow [2020-10-09 18:15:03,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 79 transitions, 251 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:15:03,355 INFO L241 Difference]: Finished difference. Result has 99 places, 67 transitions, 196 flow [2020-10-09 18:15:03,355 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2020-10-09 18:15:03,356 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2020-10-09 18:15:03,356 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 196 flow [2020-10-09 18:15:03,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:03,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:03,356 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, 1, 1, 1, 1, 1] [2020-10-09 18:15:03,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 18:15:03,576 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:03,577 INFO L82 PathProgramCache]: Analyzing trace with hash 609192252, now seen corresponding path program 1 times [2020-10-09 18:15:03,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:03,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155464486] [2020-10-09 18:15:03,579 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 18:15:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:03,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:03,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:03,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:03,711 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 18:15:03,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:03,752 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 18:15:03,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155464486] [2020-10-09 18:15:03,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:03,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:03,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611743388] [2020-10-09 18:15:03,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:03,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:03,918 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:03,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 196 flow. Second operand 9 states. [2020-10-09 18:15:03,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:03,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:03,919 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:04,023 INFO L129 PetriNetUnfolder]: 4/73 cut-off events. [2020-10-09 18:15:04,023 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-09 18:15:04,024 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 73 events. 4/73 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 133. Up to 5 conditions per place. [2020-10-09 18:15:04,024 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2020-10-09 18:15:04,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 72 transitions, 254 flow [2020-10-09 18:15:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 758 transitions. [2020-10-09 18:15:04,030 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8813953488372093 [2020-10-09 18:15:04,030 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 758 transitions. [2020-10-09 18:15:04,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 758 transitions. [2020-10-09 18:15:04,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:04,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 758 transitions. [2020-10-09 18:15:04,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:04,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:04,036 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:04,037 INFO L185 Difference]: Start difference. First operand has 99 places, 67 transitions, 196 flow. Second operand 10 states and 758 transitions. [2020-10-09 18:15:04,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 72 transitions, 254 flow [2020-10-09 18:15:04,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 72 transitions, 220 flow, removed 12 selfloop flow, removed 8 redundant places. [2020-10-09 18:15:04,039 INFO L241 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2020-10-09 18:15:04,039 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2020-10-09 18:15:04,040 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:15:04,040 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2020-10-09 18:15:04,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:04,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 18:15:04,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:15:04 BasicIcfg [2020-10-09 18:15:04,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:15:04,266 INFO L168 Benchmark]: Toolchain (without parser) took 7434.63 ms. Allocated memory was 251.1 MB in the beginning and 421.5 MB in the end (delta: 170.4 MB). Free memory was 205.6 MB in the beginning and 317.7 MB in the end (delta: -112.1 MB). Peak memory consumption was 58.3 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,266 INFO L168 Benchmark]: CDTParser took 0.24 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 18:15:04,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.02 ms. Allocated memory was 251.1 MB in the beginning and 315.1 MB in the end (delta: 64.0 MB). Free memory was 205.6 MB in the beginning and 265.9 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.65 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 263.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,269 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 315.1 MB. Free memory was 263.4 MB in the beginning and 260.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,270 INFO L168 Benchmark]: RCFGBuilder took 433.21 ms. Allocated memory is still 315.1 MB. Free memory was 260.9 MB in the beginning and 236.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,271 INFO L168 Benchmark]: TraceAbstraction took 6233.07 ms. Allocated memory was 315.1 MB in the beginning and 421.5 MB in the end (delta: 106.4 MB). Free memory was 236.5 MB in the beginning and 317.7 MB in the end (delta: -81.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:04,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 677.02 ms. Allocated memory was 251.1 MB in the beginning and 315.1 MB in the end (delta: 64.0 MB). Free memory was 205.6 MB in the beginning and 265.9 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 58.65 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 263.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 315.1 MB. Free memory was 263.4 MB in the beginning and 260.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 433.21 ms. Allocated memory is still 315.1 MB. Free memory was 260.9 MB in the beginning and 236.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6233.07 ms. Allocated memory was 315.1 MB in the beginning and 421.5 MB in the end (delta: 106.4 MB). Free memory was 236.5 MB in the beginning and 317.7 MB in the end (delta: -81.2 MB). Peak memory consumption was 25.2 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, 85 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: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 331 SDslu, 647 SDs, 0 SdLazy, 464 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 700 SyntacticMatches, 20 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 772 ConstructedInterpolants, 0 QuantifiedInterpolants, 108762 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 52 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...