/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/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 01:14:07,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 01:14:07,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 01:14:07,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 01:14:07,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 01:14:07,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 01:14:07,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 01:14:07,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 01:14:07,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 01:14:07,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 01:14:07,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 01:14:07,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 01:14:07,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 01:14:07,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 01:14:07,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 01:14:07,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 01:14:07,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 01:14:07,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 01:14:07,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 01:14:07,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 01:14:07,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 01:14:07,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 01:14:07,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 01:14:07,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 01:14:07,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 01:14:07,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 01:14:07,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 01:14:07,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 01:14:07,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 01:14:07,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 01:14:07,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 01:14:07,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 01:14:07,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 01:14:07,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 01:14:07,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 01:14:07,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 01:14:07,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 01:14:07,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 01:14:07,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 01:14:07,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 01:14:07,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 01:14:07,671 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 01:14:07,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 01:14:07,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 01:14:07,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 01:14:07,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 01:14:07,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 01:14:07,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 01:14:07,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 01:14:07,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 01:14:07,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:14:07,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 01:14:07,686 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 01:14:07,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 01:14:07,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 01:14:07,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 01:14:07,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 01:14:07,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 01:14:07,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 01:14:07,891 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 01:14:07,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-01-19 01:14:07,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079adcc93/f442d8337b7e486cac7cbee846e768ec/FLAGfa9a1da17 [2022-01-19 01:14:08,239 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 01:14:08,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-01-19 01:14:08,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079adcc93/f442d8337b7e486cac7cbee846e768ec/FLAGfa9a1da17 [2022-01-19 01:14:08,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079adcc93/f442d8337b7e486cac7cbee846e768ec [2022-01-19 01:14:08,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 01:14:08,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 01:14:08,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 01:14:08,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 01:14:08,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 01:14:08,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304e6f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08, skipping insertion in model container [2022-01-19 01:14:08,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 01:14:08,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 01:14:08,844 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/parallel-misc-2.wvr.c[2554,2567] [2022-01-19 01:14:08,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:14:08,856 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 01:14:08,873 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/parallel-misc-2.wvr.c[2554,2567] [2022-01-19 01:14:08,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 01:14:08,882 INFO L208 MainTranslator]: Completed translation [2022-01-19 01:14:08,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08 WrapperNode [2022-01-19 01:14:08,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 01:14:08,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 01:14:08,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 01:14:08,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 01:14:08,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,903 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-01-19 01:14:08,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 01:14:08,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 01:14:08,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 01:14:08,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 01:14:08,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 01:14:08,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 01:14:08,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 01:14:08,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 01:14:08,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (1/1) ... [2022-01-19 01:14:08,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 01:14:08,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:08,949 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 01:14:08,967 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 01:14:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 01:14:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 01:14:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 01:14:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 01:14:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 01:14:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 01:14:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 01:14:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 01:14:08,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 01:14:08,986 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 01:14:09,032 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 01:14:09,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 01:14:09,162 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 01:14:09,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 01:14:09,178 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 01:14:09,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:14:09 BoogieIcfgContainer [2022-01-19 01:14:09,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 01:14:09,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 01:14:09,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 01:14:09,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 01:14:09,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:14:08" (1/3) ... [2022-01-19 01:14:09,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afc3e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:14:09, skipping insertion in model container [2022-01-19 01:14:09,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:14:08" (2/3) ... [2022-01-19 01:14:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afc3e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:14:09, skipping insertion in model container [2022-01-19 01:14:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:14:09" (3/3) ... [2022-01-19 01:14:09,184 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-01-19 01:14:09,188 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 01:14:09,188 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 01:14:09,188 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 01:14:09,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,215 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,216 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,221 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,221 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 01:14:09,229 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 01:14:09,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 01:14:09,289 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 01:14:09,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 01:14:09,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-01-19 01:14:09,340 INFO L129 PetriNetUnfolder]: 8/102 cut-off events. [2022-01-19 01:14:09,340 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 01:14:09,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-01-19 01:14:09,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-01-19 01:14:09,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-01-19 01:14:09,361 INFO L129 PetriNetUnfolder]: 8/92 cut-off events. [2022-01-19 01:14:09,362 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 01:14:09,362 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:09,362 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] [2022-01-19 01:14:09,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1147510984, now seen corresponding path program 1 times [2022-01-19 01:14:09,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710853229] [2022-01-19 01:14:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:09,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:09,717 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 01:14:09,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:09,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710853229] [2022-01-19 01:14:09,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710853229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:09,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:09,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 01:14:09,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693809612] [2022-01-19 01:14:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:09,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 01:14:09,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 01:14:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-19 01:14:09,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-01-19 01:14:09,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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 01:14:09,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:09,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-01-19 01:14:09,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:10,064 INFO L129 PetriNetUnfolder]: 83/278 cut-off events. [2022-01-19 01:14:10,065 INFO L130 PetriNetUnfolder]: For 46/53 co-relation queries the response was YES. [2022-01-19 01:14:10,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 278 events. 83/278 cut-off events. For 46/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1032 event pairs, 23 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 320. Up to 121 conditions per place. [2022-01-19 01:14:10,071 INFO L132 encePairwiseOnDemand]: 86/104 looper letters, 31 selfloop transitions, 9 changer transitions 7/104 dead transitions. [2022-01-19 01:14:10,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 323 flow [2022-01-19 01:14:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:14:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:14:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 725 transitions. [2022-01-19 01:14:10,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2022-01-19 01:14:10,092 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 725 transitions. [2022-01-19 01:14:10,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 725 transitions. [2022-01-19 01:14:10,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:10,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 725 transitions. [2022-01-19 01:14:10,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 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 01:14:10,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:10,110 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:10,111 INFO L186 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 10 states and 725 transitions. [2022-01-19 01:14:10,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 323 flow [2022-01-19 01:14:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 01:14:10,119 INFO L242 Difference]: Finished difference. Result has 100 places, 91 transitions, 223 flow [2022-01-19 01:14:10,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=223, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2022-01-19 01:14:10,124 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2022-01-19 01:14:10,126 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 223 flow [2022-01-19 01:14:10,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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 01:14:10,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:10,132 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] [2022-01-19 01:14:10,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 01:14:10,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1612472794, now seen corresponding path program 1 times [2022-01-19 01:14:10,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:10,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280282401] [2022-01-19 01:14:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:10,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:10,305 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 01:14:10,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280282401] [2022-01-19 01:14:10,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280282401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:10,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:10,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:14:10,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258569480] [2022-01-19 01:14:10,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:10,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:14:10,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:14:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:14:10,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-01-19 01:14:10,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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 01:14:10,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:10,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-01-19 01:14:10,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:10,478 INFO L129 PetriNetUnfolder]: 87/304 cut-off events. [2022-01-19 01:14:10,478 INFO L130 PetriNetUnfolder]: For 40/48 co-relation queries the response was YES. [2022-01-19 01:14:10,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 304 events. 87/304 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1233 event pairs, 10 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 527. Up to 74 conditions per place. [2022-01-19 01:14:10,483 INFO L132 encePairwiseOnDemand]: 91/104 looper letters, 43 selfloop transitions, 15 changer transitions 4/123 dead transitions. [2022-01-19 01:14:10,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 123 transitions, 434 flow [2022-01-19 01:14:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:14:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:14:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2022-01-19 01:14:10,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7445054945054945 [2022-01-19 01:14:10,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 542 transitions. [2022-01-19 01:14:10,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 542 transitions. [2022-01-19 01:14:10,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:10,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 542 transitions. [2022-01-19 01:14:10,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 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 01:14:10,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:10,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:10,488 INFO L186 Difference]: Start difference. First operand has 100 places, 91 transitions, 223 flow. Second operand 7 states and 542 transitions. [2022-01-19 01:14:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 123 transitions, 434 flow [2022-01-19 01:14:10,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 415 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-01-19 01:14:10,494 INFO L242 Difference]: Finished difference. Result has 97 places, 98 transitions, 279 flow [2022-01-19 01:14:10,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2022-01-19 01:14:10,495 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2022-01-19 01:14:10,495 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 279 flow [2022-01-19 01:14:10,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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 01:14:10,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:10,496 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] [2022-01-19 01:14:10,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 01:14:10,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1489782240, now seen corresponding path program 2 times [2022-01-19 01:14:10,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381521924] [2022-01-19 01:14:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:10,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:10,654 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 01:14:10,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381521924] [2022-01-19 01:14:10,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381521924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:10,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:10,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:14:10,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758731719] [2022-01-19 01:14:10,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:10,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:14:10,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:14:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:14:10,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-01-19 01:14:10,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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 01:14:10,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:10,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-01-19 01:14:10,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:10,783 INFO L129 PetriNetUnfolder]: 84/308 cut-off events. [2022-01-19 01:14:10,784 INFO L130 PetriNetUnfolder]: For 126/130 co-relation queries the response was YES. [2022-01-19 01:14:10,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 308 events. 84/308 cut-off events. For 126/130 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1269 event pairs, 13 based on Foata normal form. 7/295 useless extension candidates. Maximal degree in co-relation 326. Up to 48 conditions per place. [2022-01-19 01:14:10,786 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 39 selfloop transitions, 16 changer transitions 4/120 dead transitions. [2022-01-19 01:14:10,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 120 transitions, 482 flow [2022-01-19 01:14:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:14:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:14:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-01-19 01:14:10,788 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2022-01-19 01:14:10,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-01-19 01:14:10,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-01-19 01:14:10,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:10,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-01-19 01:14:10,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 01:14:10,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:10,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:10,791 INFO L186 Difference]: Start difference. First operand has 97 places, 98 transitions, 279 flow. Second operand 7 states and 536 transitions. [2022-01-19 01:14:10,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 120 transitions, 482 flow [2022-01-19 01:14:10,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 120 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 01:14:10,794 INFO L242 Difference]: Finished difference. Result has 105 places, 103 transitions, 373 flow [2022-01-19 01:14:10,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2022-01-19 01:14:10,795 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 13 predicate places. [2022-01-19 01:14:10,795 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 373 flow [2022-01-19 01:14:10,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 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 01:14:10,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:10,796 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] [2022-01-19 01:14:10,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 01:14:10,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 256466347, now seen corresponding path program 1 times [2022-01-19 01:14:10,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:10,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161609854] [2022-01-19 01:14:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:10,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:10,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161609854] [2022-01-19 01:14:10,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161609854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004751111] [2022-01-19 01:14:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:10,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:10,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:10,891 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 01:14:10,916 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 01:14:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:10,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 01:14:10,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:11,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:11,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004751111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:11,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:11,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-01-19 01:14:11,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753767749] [2022-01-19 01:14:11,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:11,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 01:14:11,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 01:14:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 01:14:11,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-01-19 01:14:11,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 373 flow. Second operand has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 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 01:14:11,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:11,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-01-19 01:14:11,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:12,075 INFO L129 PetriNetUnfolder]: 105/399 cut-off events. [2022-01-19 01:14:12,075 INFO L130 PetriNetUnfolder]: For 482/482 co-relation queries the response was YES. [2022-01-19 01:14:12,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 399 events. 105/399 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1805 event pairs, 6 based on Foata normal form. 9/382 useless extension candidates. Maximal degree in co-relation 501. Up to 65 conditions per place. [2022-01-19 01:14:12,078 INFO L132 encePairwiseOnDemand]: 95/104 looper letters, 66 selfloop transitions, 13 changer transitions 3/143 dead transitions. [2022-01-19 01:14:12,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 733 flow [2022-01-19 01:14:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 01:14:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 01:14:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 692 transitions. [2022-01-19 01:14:12,081 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7393162393162394 [2022-01-19 01:14:12,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 692 transitions. [2022-01-19 01:14:12,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 692 transitions. [2022-01-19 01:14:12,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:12,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 692 transitions. [2022-01-19 01:14:12,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.88888888888889) internal successors, (692), 9 states have internal predecessors, (692), 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 01:14:12,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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 01:14:12,084 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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 01:14:12,084 INFO L186 Difference]: Start difference. First operand has 105 places, 103 transitions, 373 flow. Second operand 9 states and 692 transitions. [2022-01-19 01:14:12,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 733 flow [2022-01-19 01:14:12,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 143 transitions, 721 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-01-19 01:14:12,088 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 452 flow [2022-01-19 01:14:12,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-01-19 01:14:12,089 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2022-01-19 01:14:12,089 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 452 flow [2022-01-19 01:14:12,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.3076923076923) internal successors, (940), 13 states have internal predecessors, (940), 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 01:14:12,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:12,089 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] [2022-01-19 01:14:12,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 01:14:12,303 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 01:14:12,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash -995906079, now seen corresponding path program 2 times [2022-01-19 01:14:12,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:12,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576395760] [2022-01-19 01:14:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:12,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:12,371 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 01:14:12,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:12,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576395760] [2022-01-19 01:14:12,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576395760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:12,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:12,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 01:14:12,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91962948] [2022-01-19 01:14:12,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:12,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 01:14:12,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 01:14:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 01:14:12,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-01-19 01:14:12,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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 01:14:12,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:12,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-01-19 01:14:12,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:12,490 INFO L129 PetriNetUnfolder]: 104/382 cut-off events. [2022-01-19 01:14:12,490 INFO L130 PetriNetUnfolder]: For 666/666 co-relation queries the response was YES. [2022-01-19 01:14:12,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 382 events. 104/382 cut-off events. For 666/666 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1676 event pairs, 9 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 695. Up to 105 conditions per place. [2022-01-19 01:14:12,492 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 14 changer transitions 3/126 dead transitions. [2022-01-19 01:14:12,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 673 flow [2022-01-19 01:14:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 01:14:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 01:14:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2022-01-19 01:14:12,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2022-01-19 01:14:12,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2022-01-19 01:14:12,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2022-01-19 01:14:12,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:12,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2022-01-19 01:14:12,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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 01:14:12,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:12,498 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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 01:14:12,498 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 452 flow. Second operand 7 states and 532 transitions. [2022-01-19 01:14:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 673 flow [2022-01-19 01:14:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 646 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-01-19 01:14:12,504 INFO L242 Difference]: Finished difference. Result has 120 places, 110 transitions, 489 flow [2022-01-19 01:14:12,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2022-01-19 01:14:12,506 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 28 predicate places. [2022-01-19 01:14:12,506 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 489 flow [2022-01-19 01:14:12,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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 01:14:12,506 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:12,506 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] [2022-01-19 01:14:12,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 01:14:12,506 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:12,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1643762059, now seen corresponding path program 1 times [2022-01-19 01:14:12,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:12,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101255959] [2022-01-19 01:14:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:12,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:12,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:12,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101255959] [2022-01-19 01:14:12,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101255959] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:12,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005584054] [2022-01-19 01:14:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:12,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:12,692 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 01:14:12,693 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 01:14:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-19 01:14:12,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:13,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:13,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005584054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:13,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:13,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-01-19 01:14:13,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721649524] [2022-01-19 01:14:13,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:13,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-19 01:14:13,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-19 01:14:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-01-19 01:14:13,458 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-01-19 01:14:13,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 489 flow. Second operand has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 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 01:14:13,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:13,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-01-19 01:14:13,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:14,918 INFO L129 PetriNetUnfolder]: 313/843 cut-off events. [2022-01-19 01:14:14,918 INFO L130 PetriNetUnfolder]: For 1964/1964 co-relation queries the response was YES. [2022-01-19 01:14:14,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 843 events. 313/843 cut-off events. For 1964/1964 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4233 event pairs, 5 based on Foata normal form. 29/817 useless extension candidates. Maximal degree in co-relation 1847. Up to 182 conditions per place. [2022-01-19 01:14:14,925 INFO L132 encePairwiseOnDemand]: 87/104 looper letters, 139 selfloop transitions, 83 changer transitions 0/281 dead transitions. [2022-01-19 01:14:14,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 281 transitions, 1913 flow [2022-01-19 01:14:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 01:14:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 01:14:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3031 transitions. [2022-01-19 01:14:14,931 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6939102564102564 [2022-01-19 01:14:14,931 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3031 transitions. [2022-01-19 01:14:14,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3031 transitions. [2022-01-19 01:14:14,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:14,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3031 transitions. [2022-01-19 01:14:14,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 72.16666666666667) internal successors, (3031), 42 states have internal predecessors, (3031), 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 01:14:14,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 104.0) internal successors, (4472), 43 states have internal predecessors, (4472), 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 01:14:14,943 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 104.0) internal successors, (4472), 43 states have internal predecessors, (4472), 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 01:14:14,943 INFO L186 Difference]: Start difference. First operand has 120 places, 110 transitions, 489 flow. Second operand 42 states and 3031 transitions. [2022-01-19 01:14:14,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 281 transitions, 1913 flow [2022-01-19 01:14:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 281 transitions, 1871 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-01-19 01:14:14,951 INFO L242 Difference]: Finished difference. Result has 183 places, 174 transitions, 1237 flow [2022-01-19 01:14:14,951 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1237, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-01-19 01:14:14,952 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 91 predicate places. [2022-01-19 01:14:14,952 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 1237 flow [2022-01-19 01:14:14,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 70.15) internal successors, (1403), 20 states have internal predecessors, (1403), 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 01:14:14,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:14,952 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:14,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:15,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 01:14:15,174 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash 627040508, now seen corresponding path program 2 times [2022-01-19 01:14:15,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374315969] [2022-01-19 01:14:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:15,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 01:14:15,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:15,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374315969] [2022-01-19 01:14:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374315969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:15,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:14:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542420647] [2022-01-19 01:14:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:15,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:14:15,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:14:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:14:15,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-01-19 01:14:15,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:15,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:15,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-01-19 01:14:15,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:15,382 INFO L129 PetriNetUnfolder]: 392/1476 cut-off events. [2022-01-19 01:14:15,382 INFO L130 PetriNetUnfolder]: For 9574/9655 co-relation queries the response was YES. [2022-01-19 01:14:15,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5660 conditions, 1476 events. 392/1476 cut-off events. For 9574/9655 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10580 event pairs, 89 based on Foata normal form. 34/1370 useless extension candidates. Maximal degree in co-relation 4950. Up to 222 conditions per place. [2022-01-19 01:14:15,398 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2022-01-19 01:14:15,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 1315 flow [2022-01-19 01:14:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:14:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:14:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-01-19 01:14:15,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-01-19 01:14:15,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-01-19 01:14:15,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-01-19 01:14:15,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:15,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-01-19 01:14:15,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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 01:14:15,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:15,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:15,401 INFO L186 Difference]: Start difference. First operand has 183 places, 174 transitions, 1237 flow. Second operand 4 states and 376 transitions. [2022-01-19 01:14:15,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 1315 flow [2022-01-19 01:14:15,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 185 transitions, 1176 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-01-19 01:14:15,431 INFO L242 Difference]: Finished difference. Result has 178 places, 177 transitions, 1132 flow [2022-01-19 01:14:15,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1132, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2022-01-19 01:14:15,432 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 86 predicate places. [2022-01-19 01:14:15,432 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 1132 flow [2022-01-19 01:14:15,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:15,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:15,432 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 01:14:15,432 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -913504088, now seen corresponding path program 1 times [2022-01-19 01:14:15,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:15,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342395062] [2022-01-19 01:14:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 01:14:15,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342395062] [2022-01-19 01:14:15,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342395062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:15,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:15,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:14:15,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713206144] [2022-01-19 01:14:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:15,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:14:15,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:14:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:14:15,472 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-01-19 01:14:15,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 1132 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:15,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:15,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-01-19 01:14:15,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:15,775 INFO L129 PetriNetUnfolder]: 744/2581 cut-off events. [2022-01-19 01:14:15,775 INFO L130 PetriNetUnfolder]: For 15966/16070 co-relation queries the response was YES. [2022-01-19 01:14:15,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10355 conditions, 2581 events. 744/2581 cut-off events. For 15966/16070 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 22277 event pairs, 113 based on Foata normal form. 30/2482 useless extension candidates. Maximal degree in co-relation 8938. Up to 360 conditions per place. [2022-01-19 01:14:15,801 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 21 selfloop transitions, 6 changer transitions 0/191 dead transitions. [2022-01-19 01:14:15,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 191 transitions, 1233 flow [2022-01-19 01:14:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:14:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:14:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-01-19 01:14:15,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-01-19 01:14:15,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-01-19 01:14:15,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-01-19 01:14:15,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:15,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-01-19 01:14:15,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 01:14:15,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:15,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:15,805 INFO L186 Difference]: Start difference. First operand has 178 places, 177 transitions, 1132 flow. Second operand 4 states and 375 transitions. [2022-01-19 01:14:15,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 191 transitions, 1233 flow [2022-01-19 01:14:15,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 191 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 01:14:15,842 INFO L242 Difference]: Finished difference. Result has 184 places, 180 transitions, 1170 flow [2022-01-19 01:14:15,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1170, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2022-01-19 01:14:15,843 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 92 predicate places. [2022-01-19 01:14:15,843 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 1170 flow [2022-01-19 01:14:15,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:15,843 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:15,844 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 01:14:15,844 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash -990376246, now seen corresponding path program 1 times [2022-01-19 01:14:15,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:15,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244774067] [2022-01-19 01:14:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:15,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 01:14:15,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244774067] [2022-01-19 01:14:15,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244774067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 01:14:15,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 01:14:15,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 01:14:15,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118661398] [2022-01-19 01:14:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 01:14:15,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 01:14:15,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 01:14:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 01:14:15,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-01-19 01:14:15,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 1170 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:15,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:15,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-01-19 01:14:15,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:16,060 INFO L129 PetriNetUnfolder]: 415/1673 cut-off events. [2022-01-19 01:14:16,061 INFO L130 PetriNetUnfolder]: For 11732/11836 co-relation queries the response was YES. [2022-01-19 01:14:16,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7315 conditions, 1673 events. 415/1673 cut-off events. For 11732/11836 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 12896 event pairs, 98 based on Foata normal form. 58/1663 useless extension candidates. Maximal degree in co-relation 6829. Up to 193 conditions per place. [2022-01-19 01:14:16,080 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 15 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-01-19 01:14:16,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 1236 flow [2022-01-19 01:14:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 01:14:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 01:14:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2022-01-19 01:14:16,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8918269230769231 [2022-01-19 01:14:16,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2022-01-19 01:14:16,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2022-01-19 01:14:16,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:16,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2022-01-19 01:14:16,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 01:14:16,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:16,083 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 01:14:16,083 INFO L186 Difference]: Start difference. First operand has 184 places, 180 transitions, 1170 flow. Second operand 4 states and 371 transitions. [2022-01-19 01:14:16,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 1236 flow [2022-01-19 01:14:16,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 1236 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 01:14:16,153 INFO L242 Difference]: Finished difference. Result has 189 places, 182 transitions, 1210 flow [2022-01-19 01:14:16,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1210, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2022-01-19 01:14:16,154 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 97 predicate places. [2022-01-19 01:14:16,154 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 1210 flow [2022-01-19 01:14:16,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 01:14:16,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:16,154 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:16,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 01:14:16,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1464456534, now seen corresponding path program 1 times [2022-01-19 01:14:16,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833920314] [2022-01-19 01:14:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:16,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:16,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833920314] [2022-01-19 01:14:16,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833920314] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792418004] [2022-01-19 01:14:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:16,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:16,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:16,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:16,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 01:14:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:16,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:16,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:16,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:16,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792418004] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:16,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:16,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-19 01:14:16,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521345857] [2022-01-19 01:14:16,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:16,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:14:16,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:14:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:14:16,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:16,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 1210 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:16,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:16,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:16,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:17,287 INFO L129 PetriNetUnfolder]: 761/3083 cut-off events. [2022-01-19 01:14:17,288 INFO L130 PetriNetUnfolder]: For 22061/22238 co-relation queries the response was YES. [2022-01-19 01:14:17,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13471 conditions, 3083 events. 761/3083 cut-off events. For 22061/22238 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 27583 event pairs, 192 based on Foata normal form. 63/3038 useless extension candidates. Maximal degree in co-relation 12013. Up to 354 conditions per place. [2022-01-19 01:14:17,319 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 29 selfloop transitions, 20 changer transitions 4/213 dead transitions. [2022-01-19 01:14:17,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 213 transitions, 1409 flow [2022-01-19 01:14:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:14:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:14:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-01-19 01:14:17,321 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-01-19 01:14:17,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-01-19 01:14:17,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-01-19 01:14:17,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:17,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-01-19 01:14:17,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 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 01:14:17,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:17,325 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:17,325 INFO L186 Difference]: Start difference. First operand has 189 places, 182 transitions, 1210 flow. Second operand 10 states and 844 transitions. [2022-01-19 01:14:17,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 213 transitions, 1409 flow [2022-01-19 01:14:17,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 213 transitions, 1401 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 01:14:17,362 INFO L242 Difference]: Finished difference. Result has 200 places, 193 transitions, 1308 flow [2022-01-19 01:14:17,362 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1308, PETRI_PLACES=200, PETRI_TRANSITIONS=193} [2022-01-19 01:14:17,363 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 108 predicate places. [2022-01-19 01:14:17,363 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 193 transitions, 1308 flow [2022-01-19 01:14:17,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:17,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:17,364 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:17,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:17,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:17,582 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash 419087372, now seen corresponding path program 2 times [2022-01-19 01:14:17,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579166752] [2022-01-19 01:14:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:17,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:17,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:17,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579166752] [2022-01-19 01:14:17,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579166752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:17,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273886220] [2022-01-19 01:14:17,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:14:17,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:17,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:17,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 01:14:17,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 01:14:17,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:17,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:17,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:18,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:18,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273886220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:18,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-01-19 01:14:18,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058274029] [2022-01-19 01:14:18,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:18,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 01:14:18,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 01:14:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-01-19 01:14:18,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-01-19 01:14:18,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 193 transitions, 1308 flow. Second operand has 15 states, 15 states have (on average 70.2) internal successors, (1053), 15 states have internal predecessors, (1053), 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 01:14:18,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:18,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-01-19 01:14:18,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:19,306 INFO L129 PetriNetUnfolder]: 1735/5296 cut-off events. [2022-01-19 01:14:19,306 INFO L130 PetriNetUnfolder]: For 46143/46172 co-relation queries the response was YES. [2022-01-19 01:14:19,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26284 conditions, 5296 events. 1735/5296 cut-off events. For 46143/46172 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 49050 event pairs, 470 based on Foata normal form. 15/5267 useless extension candidates. Maximal degree in co-relation 26176. Up to 1521 conditions per place. [2022-01-19 01:14:19,361 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 331 selfloop transitions, 28 changer transitions 4/440 dead transitions. [2022-01-19 01:14:19,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 440 transitions, 4362 flow [2022-01-19 01:14:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:14:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:14:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 845 transitions. [2022-01-19 01:14:19,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2022-01-19 01:14:19,364 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 845 transitions. [2022-01-19 01:14:19,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 845 transitions. [2022-01-19 01:14:19,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:19,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 845 transitions. [2022-01-19 01:14:19,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.81818181818181) internal successors, (845), 11 states have internal predecessors, (845), 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 01:14:19,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:19,367 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:19,367 INFO L186 Difference]: Start difference. First operand has 200 places, 193 transitions, 1308 flow. Second operand 11 states and 845 transitions. [2022-01-19 01:14:19,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 440 transitions, 4362 flow [2022-01-19 01:14:19,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 440 transitions, 4276 flow, removed 33 selfloop flow, removed 7 redundant places. [2022-01-19 01:14:19,435 INFO L242 Difference]: Finished difference. Result has 204 places, 201 transitions, 1366 flow [2022-01-19 01:14:19,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1366, PETRI_PLACES=204, PETRI_TRANSITIONS=201} [2022-01-19 01:14:19,436 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 112 predicate places. [2022-01-19 01:14:19,436 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 201 transitions, 1366 flow [2022-01-19 01:14:19,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.2) internal successors, (1053), 15 states have internal predecessors, (1053), 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 01:14:19,436 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:19,436 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:19,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:19,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:19,652 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1103714706, now seen corresponding path program 3 times [2022-01-19 01:14:19,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:19,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457247817] [2022-01-19 01:14:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:19,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:19,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457247817] [2022-01-19 01:14:19,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457247817] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:19,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372850771] [2022-01-19 01:14:19,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 01:14:19,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:19,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:19,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:19,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 01:14:19,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 01:14:19,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:19,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:19,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:20,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:20,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372850771] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:20,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:20,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-19 01:14:20,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208737579] [2022-01-19 01:14:20,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:20,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:14:20,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:14:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:14:20,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:20,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 201 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:20,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:20,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:20,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:20,826 INFO L129 PetriNetUnfolder]: 1059/4424 cut-off events. [2022-01-19 01:14:20,826 INFO L130 PetriNetUnfolder]: For 33809/34109 co-relation queries the response was YES. [2022-01-19 01:14:20,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19931 conditions, 4424 events. 1059/4424 cut-off events. For 33809/34109 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 43400 event pairs, 314 based on Foata normal form. 110/4379 useless extension candidates. Maximal degree in co-relation 19813. Up to 599 conditions per place. [2022-01-19 01:14:20,866 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 47 selfloop transitions, 23 changer transitions 4/234 dead transitions. [2022-01-19 01:14:20,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 234 transitions, 1669 flow [2022-01-19 01:14:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:14:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:14:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-01-19 01:14:20,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-01-19 01:14:20,868 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-01-19 01:14:20,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-01-19 01:14:20,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:20,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-01-19 01:14:20,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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 01:14:20,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:20,870 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:20,870 INFO L186 Difference]: Start difference. First operand has 204 places, 201 transitions, 1366 flow. Second operand 10 states and 843 transitions. [2022-01-19 01:14:20,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 234 transitions, 1669 flow [2022-01-19 01:14:20,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 234 transitions, 1599 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-01-19 01:14:20,921 INFO L242 Difference]: Finished difference. Result has 210 places, 214 transitions, 1491 flow [2022-01-19 01:14:20,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1491, PETRI_PLACES=210, PETRI_TRANSITIONS=214} [2022-01-19 01:14:20,921 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 118 predicate places. [2022-01-19 01:14:20,921 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 214 transitions, 1491 flow [2022-01-19 01:14:20,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:20,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:20,922 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:20,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 01:14:21,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1223366174, now seen corresponding path program 4 times [2022-01-19 01:14:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:21,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184663988] [2022-01-19 01:14:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:21,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:21,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:21,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184663988] [2022-01-19 01:14:21,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184663988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:21,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316408262] [2022-01-19 01:14:21,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 01:14:21,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:21,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:21,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 01:14:21,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 01:14:21,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:21,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 01:14:21,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:21,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 01:14:21,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316408262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:21,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:21,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-01-19 01:14:21,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045895093] [2022-01-19 01:14:21,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:21,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 01:14:21,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 01:14:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-19 01:14:21,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:21,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 214 transitions, 1491 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:21,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:21,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:21,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:22,340 INFO L129 PetriNetUnfolder]: 1185/4954 cut-off events. [2022-01-19 01:14:22,340 INFO L130 PetriNetUnfolder]: For 38316/38644 co-relation queries the response was YES. [2022-01-19 01:14:22,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22466 conditions, 4954 events. 1185/4954 cut-off events. For 38316/38644 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 50265 event pairs, 338 based on Foata normal form. 126/4910 useless extension candidates. Maximal degree in co-relation 22335. Up to 675 conditions per place. [2022-01-19 01:14:22,390 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 61 selfloop transitions, 23 changer transitions 4/248 dead transitions. [2022-01-19 01:14:22,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 248 transitions, 1830 flow [2022-01-19 01:14:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 01:14:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 01:14:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-01-19 01:14:22,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-01-19 01:14:22,392 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-01-19 01:14:22,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-01-19 01:14:22,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:22,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-01-19 01:14:22,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 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 01:14:22,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:22,395 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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 01:14:22,395 INFO L186 Difference]: Start difference. First operand has 210 places, 214 transitions, 1491 flow. Second operand 10 states and 843 transitions. [2022-01-19 01:14:22,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 248 transitions, 1830 flow [2022-01-19 01:14:22,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 248 transitions, 1801 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-01-19 01:14:22,459 INFO L242 Difference]: Finished difference. Result has 217 places, 228 transitions, 1661 flow [2022-01-19 01:14:22,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=217, PETRI_TRANSITIONS=228} [2022-01-19 01:14:22,460 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 125 predicate places. [2022-01-19 01:14:22,460 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 228 transitions, 1661 flow [2022-01-19 01:14:22,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 01:14:22,460 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:22,460 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:22,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 01:14:22,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:22,675 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1902387016, now seen corresponding path program 5 times [2022-01-19 01:14:22,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:22,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241353617] [2022-01-19 01:14:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:22,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:22,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241353617] [2022-01-19 01:14:22,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241353617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319573400] [2022-01-19 01:14:22,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 01:14:22,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:22,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:22,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:22,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 01:14:22,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-19 01:14:22,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:22,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:22,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:23,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:23,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319573400] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:23,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:23,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-19 01:14:23,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241714913] [2022-01-19 01:14:23,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:23,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 01:14:23,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 01:14:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 01:14:23,260 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:23,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 228 transitions, 1661 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:23,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:23,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:23,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:24,178 INFO L129 PetriNetUnfolder]: 1429/6168 cut-off events. [2022-01-19 01:14:24,178 INFO L130 PetriNetUnfolder]: For 50401/50842 co-relation queries the response was YES. [2022-01-19 01:14:24,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28610 conditions, 6168 events. 1429/6168 cut-off events. For 50401/50842 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 65914 event pairs, 394 based on Foata normal form. 233/6227 useless extension candidates. Maximal degree in co-relation 28450. Up to 717 conditions per place. [2022-01-19 01:14:24,227 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 51 selfloop transitions, 51 changer transitions 4/266 dead transitions. [2022-01-19 01:14:24,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 266 transitions, 2070 flow [2022-01-19 01:14:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:14:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:14:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2022-01-19 01:14:24,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155594405594405 [2022-01-19 01:14:24,229 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2022-01-19 01:14:24,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2022-01-19 01:14:24,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:24,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2022-01-19 01:14:24,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 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 01:14:24,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:24,232 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:24,232 INFO L186 Difference]: Start difference. First operand has 217 places, 228 transitions, 1661 flow. Second operand 11 states and 933 transitions. [2022-01-19 01:14:24,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 266 transitions, 2070 flow [2022-01-19 01:14:24,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 266 transitions, 2025 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-01-19 01:14:24,312 INFO L242 Difference]: Finished difference. Result has 223 places, 240 transitions, 1869 flow [2022-01-19 01:14:24,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1869, PETRI_PLACES=223, PETRI_TRANSITIONS=240} [2022-01-19 01:14:24,313 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 131 predicate places. [2022-01-19 01:14:24,313 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 240 transitions, 1869 flow [2022-01-19 01:14:24,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:24,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:24,313 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:24,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:24,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:24,530 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1115209364, now seen corresponding path program 6 times [2022-01-19 01:14:24,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201282139] [2022-01-19 01:14:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:24,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:24,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:24,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201282139] [2022-01-19 01:14:24,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201282139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:24,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924328656] [2022-01-19 01:14:24,716 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 01:14:24,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:24,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:24,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 01:14:24,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 01:14:24,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:24,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:24,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:25,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:25,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924328656] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:25,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:25,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-19 01:14:25,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843660958] [2022-01-19 01:14:25,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:25,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 01:14:25,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 01:14:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 01:14:25,207 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:25,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 240 transitions, 1869 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:25,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:25,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:25,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:26,378 INFO L129 PetriNetUnfolder]: 1708/7358 cut-off events. [2022-01-19 01:14:26,378 INFO L130 PetriNetUnfolder]: For 62548/63055 co-relation queries the response was YES. [2022-01-19 01:14:26,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34571 conditions, 7358 events. 1708/7358 cut-off events. For 62548/63055 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 81641 event pairs, 517 based on Foata normal form. 166/7302 useless extension candidates. Maximal degree in co-relation 34384. Up to 905 conditions per place. [2022-01-19 01:14:26,437 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 89 selfloop transitions, 33 changer transitions 4/286 dead transitions. [2022-01-19 01:14:26,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 286 transitions, 2417 flow [2022-01-19 01:14:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:14:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:14:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-01-19 01:14:26,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-01-19 01:14:26,440 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-01-19 01:14:26,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-01-19 01:14:26,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:26,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-01-19 01:14:26,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 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 01:14:26,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:26,443 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:26,443 INFO L186 Difference]: Start difference. First operand has 223 places, 240 transitions, 1869 flow. Second operand 11 states and 931 transitions. [2022-01-19 01:14:26,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 286 transitions, 2417 flow [2022-01-19 01:14:26,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 286 transitions, 2322 flow, removed 43 selfloop flow, removed 5 redundant places. [2022-01-19 01:14:26,543 INFO L242 Difference]: Finished difference. Result has 231 places, 260 transitions, 2120 flow [2022-01-19 01:14:26,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2120, PETRI_PLACES=231, PETRI_TRANSITIONS=260} [2022-01-19 01:14:26,543 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 139 predicate places. [2022-01-19 01:14:26,544 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 260 transitions, 2120 flow [2022-01-19 01:14:26,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:26,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:26,544 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:26,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 01:14:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 01:14:26,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1068784864, now seen corresponding path program 7 times [2022-01-19 01:14:26,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:26,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030541610] [2022-01-19 01:14:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:26,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:26,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030541610] [2022-01-19 01:14:26,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030541610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922795707] [2022-01-19 01:14:26,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 01:14:26,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:26,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:26,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 01:14:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:26,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 01:14:26,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:27,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:14:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922795707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:27,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:27,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-19 01:14:27,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556764310] [2022-01-19 01:14:27,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:27,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 01:14:27,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 01:14:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 01:14:27,273 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-01-19 01:14:27,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 260 transitions, 2120 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:27,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:27,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-01-19 01:14:27,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:14:28,750 INFO L129 PetriNetUnfolder]: 1971/8435 cut-off events. [2022-01-19 01:14:28,750 INFO L130 PetriNetUnfolder]: For 72811/73612 co-relation queries the response was YES. [2022-01-19 01:14:28,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39859 conditions, 8435 events. 1971/8435 cut-off events. For 72811/73612 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 96510 event pairs, 561 based on Foata normal form. 370/8561 useless extension candidates. Maximal degree in co-relation 39653. Up to 999 conditions per place. [2022-01-19 01:14:28,829 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 77 selfloop transitions, 61 changer transitions 4/302 dead transitions. [2022-01-19 01:14:28,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 302 transitions, 2672 flow [2022-01-19 01:14:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 01:14:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 01:14:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2022-01-19 01:14:28,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155594405594405 [2022-01-19 01:14:28,830 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2022-01-19 01:14:28,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2022-01-19 01:14:28,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:14:28,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2022-01-19 01:14:28,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 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 01:14:28,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:28,833 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 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 01:14:28,833 INFO L186 Difference]: Start difference. First operand has 231 places, 260 transitions, 2120 flow. Second operand 11 states and 933 transitions. [2022-01-19 01:14:28,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 302 transitions, 2672 flow [2022-01-19 01:14:28,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 302 transitions, 2589 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-01-19 01:14:28,948 INFO L242 Difference]: Finished difference. Result has 240 places, 276 transitions, 2462 flow [2022-01-19 01:14:28,948 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2462, PETRI_PLACES=240, PETRI_TRANSITIONS=276} [2022-01-19 01:14:28,948 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 148 predicate places. [2022-01-19 01:14:28,948 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 276 transitions, 2462 flow [2022-01-19 01:14:28,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 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 01:14:28,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:14:28,949 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:28,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-19 01:14:29,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 01:14:29,164 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:14:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:14:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash -264766159, now seen corresponding path program 8 times [2022-01-19 01:14:29,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:14:29,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989286716] [2022-01-19 01:14:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:14:29,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:14:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:14:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:29,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:14:29,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989286716] [2022-01-19 01:14:29,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989286716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:14:29,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834590947] [2022-01-19 01:14:29,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 01:14:29,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:14:29,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:14:29,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:14:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 01:14:29,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 01:14:29,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:14:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 01:14:29,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:14:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:31,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:14:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:14:37,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834590947] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:14:37,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:14:37,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 40 [2022-01-19 01:14:37,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605536674] [2022-01-19 01:14:37,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:14:37,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-19 01:14:37,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:14:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-19 01:14:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2022-01-19 01:14:37,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-01-19 01:14:37,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 276 transitions, 2462 flow. Second operand has 40 states, 40 states have (on average 65.725) internal successors, (2629), 40 states have internal predecessors, (2629), 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 01:14:37,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:14:37,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-01-19 01:14:37,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:16:16,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:16:19,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:18:35,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:20:26,186 INFO L129 PetriNetUnfolder]: 15788/46229 cut-off events. [2022-01-19 01:20:26,186 INFO L130 PetriNetUnfolder]: For 486961/486961 co-relation queries the response was YES. [2022-01-19 01:20:26,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253173 conditions, 46229 events. 15788/46229 cut-off events. For 486961/486961 co-relation queries the response was YES. Maximal size of possible extension queue 1893. Compared 601628 event pairs, 741 based on Foata normal form. 1196/47303 useless extension candidates. Maximal degree in co-relation 252662. Up to 5799 conditions per place. [2022-01-19 01:20:26,782 INFO L132 encePairwiseOnDemand]: 81/104 looper letters, 2729 selfloop transitions, 552 changer transitions 0/3342 dead transitions. [2022-01-19 01:20:26,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 3342 transitions, 42878 flow [2022-01-19 01:20:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-01-19 01:20:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2022-01-19 01:20:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 12240 transitions. [2022-01-19 01:20:26,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6574989256553503 [2022-01-19 01:20:26,791 INFO L72 ComplementDD]: Start complementDD. Operand 179 states and 12240 transitions. [2022-01-19 01:20:26,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 12240 transitions. [2022-01-19 01:20:26,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:20:26,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 179 states and 12240 transitions. [2022-01-19 01:20:26,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 180 states, 179 states have (on average 68.37988826815642) internal successors, (12240), 179 states have internal predecessors, (12240), 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 01:20:26,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 180 states, 180 states have (on average 104.0) internal successors, (18720), 180 states have internal predecessors, (18720), 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 01:20:26,825 INFO L81 ComplementDD]: Finished complementDD. Result has 180 states, 180 states have (on average 104.0) internal successors, (18720), 180 states have internal predecessors, (18720), 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 01:20:26,825 INFO L186 Difference]: Start difference. First operand has 240 places, 276 transitions, 2462 flow. Second operand 179 states and 12240 transitions. [2022-01-19 01:20:26,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 3342 transitions, 42878 flow [2022-01-19 01:20:28,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 3342 transitions, 42023 flow, removed 330 selfloop flow, removed 6 redundant places. [2022-01-19 01:20:28,252 INFO L242 Difference]: Finished difference. Result has 454 places, 814 transitions, 10354 flow [2022-01-19 01:20:28,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=179, PETRI_FLOW=10354, PETRI_PLACES=454, PETRI_TRANSITIONS=814} [2022-01-19 01:20:28,253 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 362 predicate places. [2022-01-19 01:20:28,253 INFO L470 AbstractCegarLoop]: Abstraction has has 454 places, 814 transitions, 10354 flow [2022-01-19 01:20:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 65.725) internal successors, (2629), 40 states have internal predecessors, (2629), 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 01:20:28,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:20:28,253 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:28,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 01:20:28,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 01:20:28,457 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:20:28,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:20:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2089560849, now seen corresponding path program 9 times [2022-01-19 01:20:28,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:20:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617179305] [2022-01-19 01:20:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:20:28,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:20:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:20:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:20:28,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:20:28,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617179305] [2022-01-19 01:20:28,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617179305] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:20:28,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230931510] [2022-01-19 01:20:28,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 01:20:28,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:20:28,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:20:28,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:20:28,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 01:20:28,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 01:20:28,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:20:28,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-19 01:20:28,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:20:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:20:29,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:20:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 01:20:31,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230931510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:20:31,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:20:31,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 36 [2022-01-19 01:20:31,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697367330] [2022-01-19 01:20:31,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:20:31,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-19 01:20:31,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:20:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-19 01:20:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 01:20:31,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-01-19 01:20:31,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 814 transitions, 10354 flow. Second operand has 36 states, 36 states have (on average 66.08333333333333) internal successors, (2379), 36 states have internal predecessors, (2379), 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 01:20:31,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:20:31,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-01-19 01:20:31,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:20:58,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:21:15,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:21:34,392 WARN L228 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 01:22:01,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 01:22:11,300 WARN L228 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 01:22:25,599 WARN L228 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 01:22:44,322 WARN L228 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 01:24:00,326 INFO L129 PetriNetUnfolder]: 34134/95359 cut-off events. [2022-01-19 01:24:00,327 INFO L130 PetriNetUnfolder]: For 4301445/4301445 co-relation queries the response was YES. [2022-01-19 01:24:02,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 774700 conditions, 95359 events. 34134/95359 cut-off events. For 4301445/4301445 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 1301933 event pairs, 3441 based on Foata normal form. 2026/96983 useless extension candidates. Maximal degree in co-relation 747778. Up to 13277 conditions per place. [2022-01-19 01:24:03,010 INFO L132 encePairwiseOnDemand]: 81/104 looper letters, 2922 selfloop transitions, 1195 changer transitions 0/4178 dead transitions. [2022-01-19 01:24:03,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 4178 transitions, 62630 flow [2022-01-19 01:24:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-19 01:24:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2022-01-19 01:24:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 9822 transitions. [2022-01-19 01:24:03,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6604357181280258 [2022-01-19 01:24:03,020 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 9822 transitions. [2022-01-19 01:24:03,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 9822 transitions. [2022-01-19 01:24:03,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:24:03,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 9822 transitions. [2022-01-19 01:24:03,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 68.68531468531468) internal successors, (9822), 143 states have internal predecessors, (9822), 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 01:24:03,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 104.0) internal successors, (14976), 144 states have internal predecessors, (14976), 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 01:24:03,042 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 104.0) internal successors, (14976), 144 states have internal predecessors, (14976), 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 01:24:03,043 INFO L186 Difference]: Start difference. First operand has 454 places, 814 transitions, 10354 flow. Second operand 143 states and 9822 transitions. [2022-01-19 01:24:03,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 4178 transitions, 62630 flow [2022-01-19 01:24:35,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 4178 transitions, 51663 flow, removed 5328 selfloop flow, removed 28 redundant places. [2022-01-19 01:24:36,032 INFO L242 Difference]: Finished difference. Result has 647 places, 1739 transitions, 22423 flow [2022-01-19 01:24:36,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=22423, PETRI_PLACES=647, PETRI_TRANSITIONS=1739} [2022-01-19 01:24:36,033 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 555 predicate places. [2022-01-19 01:24:36,033 INFO L470 AbstractCegarLoop]: Abstraction has has 647 places, 1739 transitions, 22423 flow [2022-01-19 01:24:36,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 66.08333333333333) internal successors, (2379), 36 states have internal predecessors, (2379), 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 01:24:36,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:24:36,034 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:36,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-19 01:24:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 01:24:36,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:24:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:24:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1278224110, now seen corresponding path program 10 times [2022-01-19 01:24:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:24:36,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351912121] [2022-01-19 01:24:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:24:36,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:24:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:24:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:24:36,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:24:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351912121] [2022-01-19 01:24:36,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351912121] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:24:36,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131120010] [2022-01-19 01:24:36,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 01:24:36,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:24:36,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:24:36,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:24:36,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 01:24:36,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 01:24:36,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:24:36,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-19 01:24:36,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:24:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 01:24:37,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:24:40,021 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (let ((.cse1 (* (div c_~i2~0 4294967296) 4294967296))) (<= (+ .cse0 .cse1) (+ 2 (* 4294967296 (div (+ (* (- 1) c_~i2~0) 4294967293 .cse1) 4294967296)) c_~i2~0 (* 4294967296 (div .cse0 4294967296))))) (< (mod (+ c_~i1~0 1) 4294967296) (mod .cse0 4294967296))))) is different from false [2022-01-19 01:24:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-01-19 01:24:40,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131120010] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:24:40,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:24:40,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-01-19 01:24:40,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349864398] [2022-01-19 01:24:40,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:24:40,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 01:24:40,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:24:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 01:24:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=947, Unknown=1, NotChecked=62, Total=1122 [2022-01-19 01:24:40,917 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-01-19 01:24:40,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1739 transitions, 22423 flow. Second operand has 34 states, 34 states have (on average 65.79411764705883) internal successors, (2237), 34 states have internal predecessors, (2237), 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 01:24:40,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:24:40,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-01-19 01:24:40,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:25:40,789 INFO L129 PetriNetUnfolder]: 34758/97518 cut-off events. [2022-01-19 01:25:40,789 INFO L130 PetriNetUnfolder]: For 4371153/4371153 co-relation queries the response was YES. [2022-01-19 01:25:45,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760150 conditions, 97518 events. 34758/97518 cut-off events. For 4371153/4371153 co-relation queries the response was YES. Maximal size of possible extension queue 2865. Compared 1338506 event pairs, 8895 based on Foata normal form. 20/96841 useless extension candidates. Maximal degree in co-relation 758430. Up to 65283 conditions per place. [2022-01-19 01:25:45,653 INFO L132 encePairwiseOnDemand]: 85/104 looper letters, 1850 selfloop transitions, 106 changer transitions 32/2049 dead transitions. [2022-01-19 01:25:45,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 2049 transitions, 30303 flow [2022-01-19 01:25:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 01:25:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 01:25:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1933 transitions. [2022-01-19 01:25:45,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.663804945054945 [2022-01-19 01:25:45,655 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1933 transitions. [2022-01-19 01:25:45,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1933 transitions. [2022-01-19 01:25:45,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 01:25:45,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1933 transitions. [2022-01-19 01:25:45,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 69.03571428571429) internal successors, (1933), 28 states have internal predecessors, (1933), 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 01:25:45,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 104.0) internal successors, (3016), 29 states have internal predecessors, (3016), 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 01:25:45,659 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 104.0) internal successors, (3016), 29 states have internal predecessors, (3016), 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 01:25:45,659 INFO L186 Difference]: Start difference. First operand has 647 places, 1739 transitions, 22423 flow. Second operand 28 states and 1933 transitions. [2022-01-19 01:25:45,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 2049 transitions, 30303 flow [2022-01-19 01:26:50,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 2049 transitions, 27456 flow, removed 1283 selfloop flow, removed 30 redundant places. [2022-01-19 01:26:50,376 INFO L242 Difference]: Finished difference. Result has 657 places, 1814 transitions, 21212 flow [2022-01-19 01:26:50,377 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=20041, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21212, PETRI_PLACES=657, PETRI_TRANSITIONS=1814} [2022-01-19 01:26:50,378 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 565 predicate places. [2022-01-19 01:26:50,378 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 1814 transitions, 21212 flow [2022-01-19 01:26:50,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 65.79411764705883) internal successors, (2237), 34 states have internal predecessors, (2237), 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 01:26:50,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 01:26:50,378 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:50,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-19 01:26:50,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:26:50,582 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 01:26:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 01:26:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash 600402310, now seen corresponding path program 11 times [2022-01-19 01:26:50,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 01:26:50,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963231100] [2022-01-19 01:26:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 01:26:50,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 01:26:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 01:26:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 01:26:50,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 01:26:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963231100] [2022-01-19 01:26:50,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963231100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 01:26:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283919871] [2022-01-19 01:26:50,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 01:26:50,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 01:26:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 01:26:50,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 01:26:50,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 01:26:50,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 01:26:50,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 01:26:50,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 01:26:50,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 01:26:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 01:26:51,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 01:26:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 01:26:52,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283919871] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 01:26:52,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 01:26:52,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-01-19 01:26:52,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668097674] [2022-01-19 01:26:52,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 01:26:52,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-19 01:26:52,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 01:26:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-19 01:26:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 01:26:52,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-01-19 01:26:52,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 1814 transitions, 21212 flow. Second operand has 36 states, 36 states have (on average 65.94444444444444) internal successors, (2374), 36 states have internal predecessors, (2374), 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 01:26:52,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 01:26:52,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-01-19 01:26:52,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 01:27:40,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-01-19 01:28:11,377 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 01:28:11,382 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 01:28:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-19 01:28:11,666 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 01:28:11,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-19 01:28:11,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-19 01:28:11,867 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 140 known predicates. [2022-01-19 01:28:11,868 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 01:28:11,868 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 01:28:11,870 INFO L732 BasicCegarLoop]: Path program histogram: [11, 2, 2, 2, 1, 1, 1] [2022-01-19 01:28:11,875 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 01:28:11,876 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 01:28:11,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:28:11 BasicIcfg [2022-01-19 01:28:11,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 01:28:11,877 INFO L158 Benchmark]: Toolchain (without parser) took 843209.30ms. Allocated memory was 356.5MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 303.3MB in the beginning and 6.5GB in the end (delta: -6.2GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 320.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.35ms. Allocated memory is still 356.5MB. Free memory was 303.2MB in the beginning and 328.9MB in the end (delta: -25.8MB). Peak memory consumption was 13.3MB. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.48ms. Allocated memory is still 356.5MB. Free memory was 328.9MB in the beginning and 327.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: Boogie Preprocessor took 15.33ms. Allocated memory is still 356.5MB. Free memory was 327.9MB in the beginning and 326.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: RCFGBuilder took 259.62ms. Allocated memory is still 356.5MB. Free memory was 326.8MB in the beginning and 312.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 01:28:11,878 INFO L158 Benchmark]: TraceAbstraction took 842696.78ms. Allocated memory was 356.5MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 312.2MB in the beginning and 6.5GB in the end (delta: -6.1GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2022-01-19 01:28:11,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 320.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 211.35ms. Allocated memory is still 356.5MB. Free memory was 303.2MB in the beginning and 328.9MB in the end (delta: -25.8MB). Peak memory consumption was 13.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.48ms. Allocated memory is still 356.5MB. Free memory was 328.9MB in the beginning and 327.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 15.33ms. Allocated memory is still 356.5MB. Free memory was 327.9MB in the beginning and 326.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 259.62ms. Allocated memory is still 356.5MB. Free memory was 326.8MB in the beginning and 312.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 842696.78ms. Allocated memory was 356.5MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 312.2MB in the beginning and 6.5GB in the end (delta: -6.1GB). Peak memory consumption was 6.9GB. 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 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 140 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 140 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 140 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 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: 842.6s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 814.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 5391 SdHoareTripleChecker+Valid, 67.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5391 mSDsluCounter, 5154 SdHoareTripleChecker+Invalid, 65.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1196 IncrementalHoareTripleChecker+Unchecked, 8109 mSDsCounter, 988 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12686 IncrementalHoareTripleChecker+Invalid, 14874 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 988 mSolverCounterUnsat, 489 mSDtfsCounter, 12686 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3207 GetRequests, 2412 SyntacticMatches, 34 SemanticMatches, 760 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32719 ImplicationChecksByTransitivity, 554.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22423occurred in iteration=18, InterpolantAutomatonStates: 518, 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, 1.2s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 3096 NumberOfCodeBlocks, 3096 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 4304 ConstructedInterpolants, 80 QuantifiedInterpolants, 34616 SizeOfPredicates, 150 NumberOfNonLiveVariables, 2602 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 46 InterpolantComputations, 7 PerfectInterpolantSequences, 162/760 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown