/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:08:06,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:08:06,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:08:06,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:08:06,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:08:06,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:08:06,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:08:06,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:08:06,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:08:06,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:08:06,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:08:06,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:08:06,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:08:06,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:08:06,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:08:06,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:08:06,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:08:06,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:08:06,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:08:06,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:08:06,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:08:06,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:08:06,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:08:06,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:08:06,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:08:06,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:08:06,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:08:06,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:08:06,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:08:06,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:08:06,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:08:06,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:08:06,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:08:06,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:08:06,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:08:06,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:08:06,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:08:06,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:08:06,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:08:06,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:08:06,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:08:06,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 02:08:06,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:08:06,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:08:06,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:08:06,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:08:06,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:08:06,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:08:06,595 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:08:06,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:08:06,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:08:06,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:08:06,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:08:06,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:08:06,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:08:06,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:08:06,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:08:06,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:08:06,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:08:06,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:08:06,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:08:06,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:08:06,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:08:06,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:08:06,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:08:06,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:08:06,811 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:08:06,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-01-19 02:08:06,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed41432/cb5086d2961148f5a7bc252d9e9b5408/FLAG0ee216d70 [2022-01-19 02:08:07,170 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:08:07,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-01-19 02:08:07,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed41432/cb5086d2961148f5a7bc252d9e9b5408/FLAG0ee216d70 [2022-01-19 02:08:07,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ed41432/cb5086d2961148f5a7bc252d9e9b5408 [2022-01-19 02:08:07,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:08:07,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:08:07,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:08:07,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:08:07,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:08:07,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4976be1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07, skipping insertion in model container [2022-01-19 02:08:07,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:08:07,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:08:07,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-01-19 02:08:07,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:08:07,785 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:08:07,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-01-19 02:08:07,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:08:07,831 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:08:07,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07 WrapperNode [2022-01-19 02:08:07,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:08:07,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:08:07,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:08:07,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:08:07,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,878 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-01-19 02:08:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:08:07,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:08:07,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:08:07,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:08:07,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:08:07,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:08:07,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:08:07,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:08:07,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (1/1) ... [2022-01-19 02:08:07,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:08:07,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:07,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 02:08:07,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 02:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:08:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:08:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:08:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 02:08:07,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 02:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:08:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:08:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 02:08:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:08:07,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:08:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:08:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:08:07,990 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:08:08,079 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:08:08,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:08:08,276 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:08:08,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:08:08,322 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 02:08:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:08:08 BoogieIcfgContainer [2022-01-19 02:08:08,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:08:08,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:08:08,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:08:08,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:08:08,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:08:07" (1/3) ... [2022-01-19 02:08:08,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cd5647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:08:08, skipping insertion in model container [2022-01-19 02:08:08,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:08:07" (2/3) ... [2022-01-19 02:08:08,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cd5647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:08:08, skipping insertion in model container [2022-01-19 02:08:08,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:08:08" (3/3) ... [2022-01-19 02:08:08,330 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-01-19 02:08:08,334 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:08:08,334 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:08:08,334 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:08:08,373 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,373 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,373 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,374 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,374 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,374 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,376 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,377 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,380 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,381 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,381 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,381 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,382 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,382 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,383 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,383 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,384 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,384 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,385 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,386 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,386 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,387 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,387 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,387 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,390 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,391 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,393 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,393 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:08:08,400 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 02:08:08,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:08:08,444 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:08:08,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 02:08:08,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-01-19 02:08:08,512 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2022-01-19 02:08:08,513 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:08:08,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-01-19 02:08:08,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2022-01-19 02:08:08,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2022-01-19 02:08:08,561 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2022-01-19 02:08:08,561 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:08:08,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:08,562 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:08,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 909462289, now seen corresponding path program 1 times [2022-01-19 02:08:08,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:08,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096568506] [2022-01-19 02:08:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:08,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:08,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096568506] [2022-01-19 02:08:08,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096568506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:08,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:08:08,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 02:08:08,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921706464] [2022-01-19 02:08:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:08,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 02:08:08,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 02:08:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 02:08:08,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 149 [2022-01-19 02:08:08,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:08,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:08,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 149 [2022-01-19 02:08:08,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:09,000 INFO L129 PetriNetUnfolder]: 20/193 cut-off events. [2022-01-19 02:08:09,000 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2022-01-19 02:08:09,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 193 events. 20/193 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 323 event pairs, 7 based on Foata normal form. 22/196 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2022-01-19 02:08:09,003 INFO L132 encePairwiseOnDemand]: 142/149 looper letters, 8 selfloop transitions, 0 changer transitions 4/128 dead transitions. [2022-01-19 02:08:09,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 290 flow [2022-01-19 02:08:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 02:08:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 02:08:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2022-01-19 02:08:09,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9429530201342282 [2022-01-19 02:08:09,014 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2022-01-19 02:08:09,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2022-01-19 02:08:09,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:09,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2022-01-19 02:08:09,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,030 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,031 INFO L186 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 2 states and 281 transitions. [2022-01-19 02:08:09,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 290 flow [2022-01-19 02:08:09,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 02:08:09,044 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 254 flow [2022-01-19 02:08:09,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-01-19 02:08:09,050 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2022-01-19 02:08:09,050 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 254 flow [2022-01-19 02:08:09,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:09,051 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:09,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:08:09,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050017, now seen corresponding path program 1 times [2022-01-19 02:08:09,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:09,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356083898] [2022-01-19 02:08:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:09,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:09,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:09,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356083898] [2022-01-19 02:08:09,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356083898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:09,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:08:09,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:08:09,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158931533] [2022-01-19 02:08:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:09,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:08:09,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:08:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:08:09,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2022-01-19 02:08:09,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:09,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2022-01-19 02:08:09,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:09,469 INFO L129 PetriNetUnfolder]: 155/542 cut-off events. [2022-01-19 02:08:09,469 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-19 02:08:09,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 542 events. 155/542 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2712 event pairs, 85 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 860. Up to 159 conditions per place. [2022-01-19 02:08:09,474 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 38 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2022-01-19 02:08:09,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 360 flow [2022-01-19 02:08:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:08:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:08:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2022-01-19 02:08:09,479 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7404921700223713 [2022-01-19 02:08:09,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2022-01-19 02:08:09,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2022-01-19 02:08:09,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:09,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2022-01-19 02:08:09,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,487 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 254 flow. Second operand 6 states and 662 transitions. [2022-01-19 02:08:09,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 360 flow [2022-01-19 02:08:09,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 02:08:09,491 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 272 flow [2022-01-19 02:08:09,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-01-19 02:08:09,492 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2022-01-19 02:08:09,492 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 272 flow [2022-01-19 02:08:09,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:09,493 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:09,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:08:09,493 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 464005187, now seen corresponding path program 1 times [2022-01-19 02:08:09,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:09,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837283437] [2022-01-19 02:08:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:09,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:09,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:09,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837283437] [2022-01-19 02:08:09,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837283437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:08:09,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:08:09,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:08:09,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530612034] [2022-01-19 02:08:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:09,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:08:09,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:09,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:08:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:08:09,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-01-19 02:08:09,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:09,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-01-19 02:08:09,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:09,842 INFO L129 PetriNetUnfolder]: 175/543 cut-off events. [2022-01-19 02:08:09,844 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-01-19 02:08:09,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 543 events. 175/543 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2405 event pairs, 108 based on Foata normal form. 9/476 useless extension candidates. Maximal degree in co-relation 972. Up to 261 conditions per place. [2022-01-19 02:08:09,855 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2022-01-19 02:08:09,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 416 flow [2022-01-19 02:08:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:08:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:08:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2022-01-19 02:08:09,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7860738255033557 [2022-01-19 02:08:09,858 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2022-01-19 02:08:09,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2022-01-19 02:08:09,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:09,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2022-01-19 02:08:09,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,864 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 272 flow. Second operand 8 states and 937 transitions. [2022-01-19 02:08:09,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 416 flow [2022-01-19 02:08:09,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 405 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:08:09,871 INFO L242 Difference]: Finished difference. Result has 138 places, 126 transitions, 288 flow [2022-01-19 02:08:09,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2022-01-19 02:08:09,873 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-01-19 02:08:09,874 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 288 flow [2022-01-19 02:08:09,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:09,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:09,875 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:09,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:08:09,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:09,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1074626539, now seen corresponding path program 1 times [2022-01-19 02:08:09,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:09,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283829949] [2022-01-19 02:08:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:08:10,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283829949] [2022-01-19 02:08:10,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283829949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:08:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878447704] [2022-01-19 02:08:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:10,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:10,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:10,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:08:10,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 02:08:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 02:08:10,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:08:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:08:10,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:08:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:08:10,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878447704] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 02:08:10,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 02:08:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-01-19 02:08:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571587727] [2022-01-19 02:08:10,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:08:10,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:08:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:08:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-01-19 02:08:10,831 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-01-19 02:08:10,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:10,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:10,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-01-19 02:08:10,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:10,969 INFO L129 PetriNetUnfolder]: 129/490 cut-off events. [2022-01-19 02:08:10,969 INFO L130 PetriNetUnfolder]: For 62/76 co-relation queries the response was YES. [2022-01-19 02:08:10,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 490 events. 129/490 cut-off events. For 62/76 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2444 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 844. Up to 133 conditions per place. [2022-01-19 02:08:10,973 INFO L132 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2022-01-19 02:08:10,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 384 flow [2022-01-19 02:08:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:08:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:08:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2022-01-19 02:08:10,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2022-01-19 02:08:10,976 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2022-01-19 02:08:10,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2022-01-19 02:08:10,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:10,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2022-01-19 02:08:10,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:10,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:10,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:10,981 INFO L186 Difference]: Start difference. First operand has 138 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2022-01-19 02:08:10,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 384 flow [2022-01-19 02:08:10,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-19 02:08:10,987 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 307 flow [2022-01-19 02:08:10,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-01-19 02:08:10,988 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 4 predicate places. [2022-01-19 02:08:10,988 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 307 flow [2022-01-19 02:08:10,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:10,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:08:10,989 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:08:11,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 02:08:11,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:11,196 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:08:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:08:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -856593035, now seen corresponding path program 1 times [2022-01-19 02:08:11,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:08:11,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639720211] [2022-01-19 02:08:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:11,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:08:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:08:11,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:08:11,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639720211] [2022-01-19 02:08:11,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639720211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:08:11,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669218659] [2022-01-19 02:08:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:08:11,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:11,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:08:11,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:08:11,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 02:08:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:08:11,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-19 02:08:11,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:08:11,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:08:11,703 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:08:11,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 02:08:11,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 02:08:12,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:08:12,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 02:08:12,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:08:12,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 02:08:12,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 02:08:12,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 02:08:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:08:12,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:08:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 02:08:13,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669218659] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:08:13,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:08:13,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 9] total 33 [2022-01-19 02:08:13,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403794877] [2022-01-19 02:08:13,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:08:13,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-19 02:08:13,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:08:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-19 02:08:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-01-19 02:08:13,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 149 [2022-01-19 02:08:13,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 307 flow. Second operand has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:13,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:08:13,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 149 [2022-01-19 02:08:13,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:08:16,122 INFO L129 PetriNetUnfolder]: 2340/4572 cut-off events. [2022-01-19 02:08:16,123 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2022-01-19 02:08:16,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 4572 events. 2340/4572 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32561 event pairs, 149 based on Foata normal form. 4/4535 useless extension candidates. Maximal degree in co-relation 10010. Up to 469 conditions per place. [2022-01-19 02:08:16,136 INFO L132 encePairwiseOnDemand]: 121/149 looper letters, 0 selfloop transitions, 0 changer transitions 345/345 dead transitions. [2022-01-19 02:08:16,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 1545 flow [2022-01-19 02:08:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 02:08:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 02:08:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2611 transitions. [2022-01-19 02:08:16,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4172259507829978 [2022-01-19 02:08:16,143 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2611 transitions. [2022-01-19 02:08:16,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2611 transitions. [2022-01-19 02:08:16,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:08:16,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2611 transitions. [2022-01-19 02:08:16,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.166666666666664) internal successors, (2611), 42 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:16,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:16,158 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:16,158 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 307 flow. Second operand 42 states and 2611 transitions. [2022-01-19 02:08:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 1545 flow [2022-01-19 02:08:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 345 transitions, 1514 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:08:16,165 INFO L242 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2022-01-19 02:08:16,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2022-01-19 02:08:16,166 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 38 predicate places. [2022-01-19 02:08:16,166 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2022-01-19 02:08:16,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:08:16,169 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 02:08:16,170 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 02:08:16,170 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 02:08:16,170 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 02:08:16,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 02:08:16,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:08:16,386 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-19 02:08:16,387 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:08:16,387 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:08:16,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:08:16 BasicIcfg [2022-01-19 02:08:16,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:08:16,391 INFO L158 Benchmark]: Toolchain (without parser) took 8795.85ms. Allocated memory was 375.4MB in the beginning and 497.0MB in the end (delta: 121.6MB). Free memory was 322.7MB in the beginning and 415.2MB in the end (delta: -92.5MB). Peak memory consumption was 31.3MB. Max. memory is 16.0GB. [2022-01-19 02:08:16,392 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 338.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:08:16,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.52ms. Allocated memory is still 375.4MB. Free memory was 322.4MB in the beginning and 347.7MB in the end (delta: -25.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. [2022-01-19 02:08:16,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.06ms. Allocated memory is still 375.4MB. Free memory was 347.7MB in the beginning and 346.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:08:16,392 INFO L158 Benchmark]: Boogie Preprocessor took 18.87ms. Allocated memory is still 375.4MB. Free memory was 346.1MB in the beginning and 344.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:08:16,393 INFO L158 Benchmark]: RCFGBuilder took 421.21ms. Allocated memory is still 375.4MB. Free memory was 344.3MB in the beginning and 327.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 02:08:16,393 INFO L158 Benchmark]: TraceAbstraction took 8064.95ms. Allocated memory was 375.4MB in the beginning and 497.0MB in the end (delta: 121.6MB). Free memory was 327.2MB in the beginning and 415.2MB in the end (delta: -88.0MB). Peak memory consumption was 36.8MB. Max. memory is 16.0GB. [2022-01-19 02:08:16,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 338.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 233.52ms. Allocated memory is still 375.4MB. Free memory was 322.4MB in the beginning and 347.7MB in the end (delta: -25.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.06ms. Allocated memory is still 375.4MB. Free memory was 347.7MB in the beginning and 346.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 18.87ms. Allocated memory is still 375.4MB. Free memory was 346.1MB in the beginning and 344.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 421.21ms. Allocated memory is still 375.4MB. Free memory was 344.3MB in the beginning and 327.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 8064.95ms. Allocated memory was 375.4MB in the beginning and 497.0MB in the end (delta: 121.6MB). Free memory was 327.2MB in the beginning and 415.2MB in the end (delta: -88.0MB). Peak memory consumption was 36.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1320 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1320 mSDsluCounter, 859 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 986 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 98 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=4, InterpolantAutomatonStates: 65, 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, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1046 ConstructedInterpolants, 0 QuantifiedInterpolants, 3863 SizeOfPredicates, 32 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/16 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 02:08:16,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...