/usr/bin/java -Xmx8000000000 -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 --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:45:55,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:45:55,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:45:55,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:45:55,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:45:55,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:45:55,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:45:55,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:45:55,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:45:55,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:45:55,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:45:55,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:45:55,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:45:55,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:45:55,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:45:55,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:45:55,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:45:55,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:45:55,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:45:55,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:45:55,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:45:55,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:45:55,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:45:55,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:45:55,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:45:55,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:45:55,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:45:55,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:45:55,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:45:55,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:45:55,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:45:55,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:45:55,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:45:55,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:45:55,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:45:55,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:45:55,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:45:55,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:45:55,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:45:55,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:45:55,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:45:55,921 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 [2022-09-16 11:45:55,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:45:55,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:45:55,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:45:55,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:45:55,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:45:55,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:45:55,954 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:45:55,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:45:55,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:45:55,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:45:55,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:45:55,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:45:55,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:45:55,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:45:55,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:45:55,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:45:55,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:45:55,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:45:55,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:45:55,958 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:45:55,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:45:55,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:45:56,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:45:56,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:45:56,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:45:56,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:45:56,240 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:45:56,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2022-09-16 11:45:56,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140cbe200/6a503e6712c04832be730756485c5dac/FLAG76173fff4 [2022-09-16 11:45:56,698 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:45:56,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2022-09-16 11:45:56,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140cbe200/6a503e6712c04832be730756485c5dac/FLAG76173fff4 [2022-09-16 11:45:57,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/140cbe200/6a503e6712c04832be730756485c5dac [2022-09-16 11:45:57,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:45:57,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:45:57,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:45:57,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:45:57,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:45:57,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b04953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57, skipping insertion in model container [2022-09-16 11:45:57,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:45:57,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:45:57,362 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/chl-nzb-file-subst.wvr.c[6501,6514] [2022-09-16 11:45:57,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:45:57,390 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:45:57,433 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/chl-nzb-file-subst.wvr.c[6501,6514] [2022-09-16 11:45:57,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:45:57,450 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:45:57,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57 WrapperNode [2022-09-16 11:45:57,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:45:57,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:45:57,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:45:57,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:45:57,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,539 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 754 [2022-09-16 11:45:57,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:45:57,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:45:57,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:45:57,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:45:57,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:45:57,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:45:57,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:45:57,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:45:57,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (1/1) ... [2022-09-16 11:45:57,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:45:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:57,693 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) [2022-09-16 11:45:57,719 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 [2022-09-16 11:45:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:45:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:45:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:45:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:45:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:45:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:45:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:45:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:45:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:45:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:45:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:45:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:45:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:45:57,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:45:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:45:57,748 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:45:57,888 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:45:57,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:45:58,760 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:45:58,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:45:58,775 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:45:58,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:58 BoogieIcfgContainer [2022-09-16 11:45:58,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:45:58,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:45:58,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:45:58,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:45:58,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:45:57" (1/3) ... [2022-09-16 11:45:58,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364cce79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:58, skipping insertion in model container [2022-09-16 11:45:58,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:57" (2/3) ... [2022-09-16 11:45:58,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364cce79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:58, skipping insertion in model container [2022-09-16 11:45:58,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:58" (3/3) ... [2022-09-16 11:45:58,788 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-09-16 11:45:58,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:45:58,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-09-16 11:45:58,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:45:59,027 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:45:59,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 937 places, 1030 transitions, 2084 flow [2022-09-16 11:45:59,576 INFO L130 PetriNetUnfolder]: 103/1027 cut-off events. [2022-09-16 11:45:59,576 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:45:59,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 1027 events. 103/1027 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4313 event pairs, 0 based on Foata normal form. 0/864 useless extension candidates. Maximal degree in co-relation 790. Up to 2 conditions per place. [2022-09-16 11:45:59,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 937 places, 1030 transitions, 2084 flow [2022-09-16 11:45:59,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 914 places, 1006 transitions, 2027 flow [2022-09-16 11:45:59,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:45:59,674 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71bf93c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:45:59,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-09-16 11:45:59,687 INFO L130 PetriNetUnfolder]: 3/119 cut-off events. [2022-09-16 11:45:59,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:45:59,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:59,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:59,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:45:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 750916427, now seen corresponding path program 1 times [2022-09-16 11:45:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:59,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456690769] [2022-09-16 11:45:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:59,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:59,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456690769] [2022-09-16 11:45:59,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456690769] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:59,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:59,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:59,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732746459] [2022-09-16 11:45:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:00,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:00,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:00,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 1006 transitions, 2027 flow. Second operand has 4 states, 4 states have (on average 951.5) internal successors, (3806), 4 states have internal predecessors, (3806), 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) [2022-09-16 11:46:00,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:00,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:01,012 INFO L130 PetriNetUnfolder]: 131/1789 cut-off events. [2022-09-16 11:46:01,013 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-09-16 11:46:01,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 1789 events. 131/1789 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11119 event pairs, 0 based on Foata normal form. 104/1593 useless extension candidates. Maximal degree in co-relation 1347. Up to 44 conditions per place. [2022-09-16 11:46:01,160 INFO L137 encePairwiseOnDemand]: 974/1030 looper letters, 58 selfloop transitions, 14 changer transitions 6/1001 dead transitions. [2022-09-16 11:46:01,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1001 transitions, 2176 flow [2022-09-16 11:46:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:46:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:46:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4894 transitions. [2022-09-16 11:46:01,186 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9502912621359223 [2022-09-16 11:46:01,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4894 transitions. [2022-09-16 11:46:01,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4894 transitions. [2022-09-16 11:46:01,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:01,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4894 transitions. [2022-09-16 11:46:01,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 978.8) internal successors, (4894), 5 states have internal predecessors, (4894), 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) [2022-09-16 11:46:01,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-09-16 11:46:01,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-09-16 11:46:01,236 INFO L175 Difference]: Start difference. First operand has 914 places, 1006 transitions, 2027 flow. Second operand 5 states and 4894 transitions. [2022-09-16 11:46:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1001 transitions, 2176 flow [2022-09-16 11:46:01,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1001 transitions, 2158 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:01,273 INFO L231 Difference]: Finished difference. Result has 916 places, 975 transitions, 2038 flow [2022-09-16 11:46:01,277 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=909, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2038, PETRI_PLACES=916, PETRI_TRANSITIONS=975} [2022-09-16 11:46:01,284 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 2 predicate places. [2022-09-16 11:46:01,285 INFO L495 AbstractCegarLoop]: Abstraction has has 916 places, 975 transitions, 2038 flow [2022-09-16 11:46:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 951.5) internal successors, (3806), 4 states have internal predecessors, (3806), 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) [2022-09-16 11:46:01,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:01,289 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:46:01,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -967177041, now seen corresponding path program 1 times [2022-09-16 11:46:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:01,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972726672] [2022-09-16 11:46:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:01,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:01,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972726672] [2022-09-16 11:46:01,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972726672] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:01,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720356241] [2022-09-16 11:46:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:01,460 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) [2022-09-16 11:46:01,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:46:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:01,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:01,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:01,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:01,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720356241] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:01,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:01,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:46:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54113784] [2022-09-16 11:46:01,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:46:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:46:01,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:46:01,826 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:01,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 975 transitions, 2038 flow. Second operand has 12 states, 12 states have (on average 952.6666666666666) internal successors, (11432), 12 states have internal predecessors, (11432), 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) [2022-09-16 11:46:01,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:01,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:01,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:04,060 INFO L130 PetriNetUnfolder]: 326/4246 cut-off events. [2022-09-16 11:46:04,060 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-09-16 11:46:04,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 4246 events. 326/4246 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 36079 event pairs, 0 based on Foata normal form. 9/3535 useless extension candidates. Maximal degree in co-relation 3224. Up to 35 conditions per place. [2022-09-16 11:46:04,351 INFO L137 encePairwiseOnDemand]: 1007/1030 looper letters, 109 selfloop transitions, 62 changer transitions 0/1094 dead transitions. [2022-09-16 11:46:04,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 1094 transitions, 2720 flow [2022-09-16 11:46:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:46:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:46:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17280 transitions. [2022-09-16 11:46:04,385 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-09-16 11:46:04,385 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 17280 transitions. [2022-09-16 11:46:04,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 17280 transitions. [2022-09-16 11:46:04,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:04,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 17280 transitions. [2022-09-16 11:46:04,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 960.0) internal successors, (17280), 18 states have internal predecessors, (17280), 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) [2022-09-16 11:46:04,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1030.0) internal successors, (19570), 19 states have internal predecessors, (19570), 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) [2022-09-16 11:46:04,477 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1030.0) internal successors, (19570), 19 states have internal predecessors, (19570), 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) [2022-09-16 11:46:04,477 INFO L175 Difference]: Start difference. First operand has 916 places, 975 transitions, 2038 flow. Second operand 18 states and 17280 transitions. [2022-09-16 11:46:04,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 1094 transitions, 2720 flow [2022-09-16 11:46:04,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1094 transitions, 2712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:46:04,498 INFO L231 Difference]: Finished difference. Result has 930 places, 1017 transitions, 2400 flow [2022-09-16 11:46:04,500 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=909, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2400, PETRI_PLACES=930, PETRI_TRANSITIONS=1017} [2022-09-16 11:46:04,500 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 16 predicate places. [2022-09-16 11:46:04,501 INFO L495 AbstractCegarLoop]: Abstraction has has 930 places, 1017 transitions, 2400 flow [2022-09-16 11:46:04,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 952.6666666666666) internal successors, (11432), 12 states have internal predecessors, (11432), 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) [2022-09-16 11:46:04,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:04,505 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:04,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:46:04,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:04,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 82285082, now seen corresponding path program 1 times [2022-09-16 11:46:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:04,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697748777] [2022-09-16 11:46:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:04,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:04,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697748777] [2022-09-16 11:46:04,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697748777] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:04,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98727937] [2022-09-16 11:46:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:04,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:04,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:04,845 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) [2022-09-16 11:46:04,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:46:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:04,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:05,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:46:05,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98727937] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:05,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:46:05,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:46:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441543204] [2022-09-16 11:46:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:05,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:46:05,028 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:05,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 1017 transitions, 2400 flow. Second operand has 6 states, 6 states have (on average 952.3333333333334) internal successors, (5714), 6 states have internal predecessors, (5714), 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) [2022-09-16 11:46:05,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:05,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:07,005 INFO L130 PetriNetUnfolder]: 326/4234 cut-off events. [2022-09-16 11:46:07,005 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-09-16 11:46:07,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 4234 events. 326/4234 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 36031 event pairs, 0 based on Foata normal form. 12/3526 useless extension candidates. Maximal degree in co-relation 3629. Up to 68 conditions per place. [2022-09-16 11:46:07,188 INFO L137 encePairwiseOnDemand]: 1013/1030 looper letters, 59 selfloop transitions, 43 changer transitions 0/1025 dead transitions. [2022-09-16 11:46:07,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 1025 transitions, 2575 flow [2022-09-16 11:46:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6722 transitions. [2022-09-16 11:46:07,202 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9323162274618585 [2022-09-16 11:46:07,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6722 transitions. [2022-09-16 11:46:07,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6722 transitions. [2022-09-16 11:46:07,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:07,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6722 transitions. [2022-09-16 11:46:07,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 960.2857142857143) internal successors, (6722), 7 states have internal predecessors, (6722), 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) [2022-09-16 11:46:07,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:07,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:07,233 INFO L175 Difference]: Start difference. First operand has 930 places, 1017 transitions, 2400 flow. Second operand 7 states and 6722 transitions. [2022-09-16 11:46:07,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 1025 transitions, 2575 flow [2022-09-16 11:46:07,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 924 places, 1025 transitions, 2459 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:07,258 INFO L231 Difference]: Finished difference. Result has 924 places, 1005 transitions, 2289 flow [2022-09-16 11:46:07,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2289, PETRI_PLACES=924, PETRI_TRANSITIONS=1005} [2022-09-16 11:46:07,262 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 10 predicate places. [2022-09-16 11:46:07,262 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1005 transitions, 2289 flow [2022-09-16 11:46:07,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 952.3333333333334) internal successors, (5714), 6 states have internal predecessors, (5714), 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) [2022-09-16 11:46:07,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:07,265 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:07,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:46:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:46:07,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1021321435, now seen corresponding path program 2 times [2022-09-16 11:46:07,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:07,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797647099] [2022-09-16 11:46:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:07,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797647099] [2022-09-16 11:46:07,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797647099] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:07,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779807847] [2022-09-16 11:46:07,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:46:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:07,740 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) [2022-09-16 11:46:07,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:46:07,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:46:07,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:46:07,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:07,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 11:46:07,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 11:46:08,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779807847] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:08,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:08,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-09-16 11:46:08,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310653582] [2022-09-16 11:46:08,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:08,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:46:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:46:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:46:08,053 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:46:08,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1005 transitions, 2289 flow. Second operand has 18 states, 18 states have (on average 941.8333333333334) internal successors, (16953), 18 states have internal predecessors, (16953), 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) [2022-09-16 11:46:08,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:08,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:46:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:10,306 INFO L130 PetriNetUnfolder]: 391/5032 cut-off events. [2022-09-16 11:46:10,307 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-09-16 11:46:10,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 5032 events. 391/5032 cut-off events. For 189/201 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 44846 event pairs, 0 based on Foata normal form. 3/4171 useless extension candidates. Maximal degree in co-relation 4019. Up to 22 conditions per place. [2022-09-16 11:46:10,494 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 127 selfloop transitions, 67 changer transitions 0/1105 dead transitions. [2022-09-16 11:46:10,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1105 transitions, 2924 flow [2022-09-16 11:46:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:46:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:46:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 18957 transitions. [2022-09-16 11:46:10,530 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.920242718446602 [2022-09-16 11:46:10,531 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 18957 transitions. [2022-09-16 11:46:10,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 18957 transitions. [2022-09-16 11:46:10,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:10,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 18957 transitions. [2022-09-16 11:46:10,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 947.85) internal successors, (18957), 20 states have internal predecessors, (18957), 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) [2022-09-16 11:46:10,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1030.0) internal successors, (21630), 21 states have internal predecessors, (21630), 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) [2022-09-16 11:46:10,605 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1030.0) internal successors, (21630), 21 states have internal predecessors, (21630), 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) [2022-09-16 11:46:10,606 INFO L175 Difference]: Start difference. First operand has 924 places, 1005 transitions, 2289 flow. Second operand 20 states and 18957 transitions. [2022-09-16 11:46:10,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1105 transitions, 2924 flow [2022-09-16 11:46:10,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 1105 transitions, 2841 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:46:10,628 INFO L231 Difference]: Finished difference. Result has 932 places, 1010 transitions, 2363 flow [2022-09-16 11:46:10,630 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=940, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2363, PETRI_PLACES=932, PETRI_TRANSITIONS=1010} [2022-09-16 11:46:10,632 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 18 predicate places. [2022-09-16 11:46:10,632 INFO L495 AbstractCegarLoop]: Abstraction has has 932 places, 1010 transitions, 2363 flow [2022-09-16 11:46:10,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 941.8333333333334) internal successors, (16953), 18 states have internal predecessors, (16953), 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) [2022-09-16 11:46:10,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:10,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:10,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:46:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:10,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:10,864 INFO L85 PathProgramCache]: Analyzing trace with hash 645888929, now seen corresponding path program 1 times [2022-09-16 11:46:10,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:10,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610928137] [2022-09-16 11:46:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:10,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:10,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610928137] [2022-09-16 11:46:10,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610928137] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:10,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:10,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:10,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159647419] [2022-09-16 11:46:10,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:10,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:46:10,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:46:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:46:10,963 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 953 out of 1030 [2022-09-16 11:46:10,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 1010 transitions, 2363 flow. Second operand has 5 states, 5 states have (on average 957.4) internal successors, (4787), 5 states have internal predecessors, (4787), 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) [2022-09-16 11:46:10,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:10,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 953 of 1030 [2022-09-16 11:46:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:12,521 INFO L130 PetriNetUnfolder]: 326/4237 cut-off events. [2022-09-16 11:46:12,521 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-09-16 11:46:12,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 4237 events. 326/4237 cut-off events. For 245/255 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 35827 event pairs, 0 based on Foata normal form. 3/3535 useless extension candidates. Maximal degree in co-relation 804. Up to 113 conditions per place. [2022-09-16 11:46:12,652 INFO L137 encePairwiseOnDemand]: 1015/1030 looper letters, 59 selfloop transitions, 20 changer transitions 0/1014 dead transitions. [2022-09-16 11:46:12,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1014 transitions, 2525 flow [2022-09-16 11:46:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:46:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:46:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4818 transitions. [2022-09-16 11:46:12,661 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9355339805825242 [2022-09-16 11:46:12,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4818 transitions. [2022-09-16 11:46:12,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4818 transitions. [2022-09-16 11:46:12,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:12,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4818 transitions. [2022-09-16 11:46:12,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 963.6) internal successors, (4818), 5 states have internal predecessors, (4818), 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) [2022-09-16 11:46:12,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-09-16 11:46:12,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-09-16 11:46:12,675 INFO L175 Difference]: Start difference. First operand has 932 places, 1010 transitions, 2363 flow. Second operand 5 states and 4818 transitions. [2022-09-16 11:46:12,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1014 transitions, 2525 flow [2022-09-16 11:46:12,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1014 transitions, 2381 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-09-16 11:46:12,692 INFO L231 Difference]: Finished difference. Result has 922 places, 1008 transitions, 2257 flow [2022-09-16 11:46:12,694 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2257, PETRI_PLACES=922, PETRI_TRANSITIONS=1008} [2022-09-16 11:46:12,694 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 8 predicate places. [2022-09-16 11:46:12,695 INFO L495 AbstractCegarLoop]: Abstraction has has 922 places, 1008 transitions, 2257 flow [2022-09-16 11:46:12,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 957.4) internal successors, (4787), 5 states have internal predecessors, (4787), 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) [2022-09-16 11:46:12,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:12,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:12,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:46:12,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash -867375884, now seen corresponding path program 1 times [2022-09-16 11:46:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949668540] [2022-09-16 11:46:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:12,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:46:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949668540] [2022-09-16 11:46:12,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949668540] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989306306] [2022-09-16 11:46:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:12,796 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) [2022-09-16 11:46:12,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:46:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:12,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:46:12,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:46:13,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:46:13,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989306306] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:13,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:46:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857972498] [2022-09-16 11:46:13,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:46:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:46:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:46:13,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:46:13,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 1008 transitions, 2257 flow. Second operand has 15 states, 15 states have (on average 942.4) internal successors, (14136), 15 states have internal predecessors, (14136), 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) [2022-09-16 11:46:13,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:13,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:46:13,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:14,239 INFO L130 PetriNetUnfolder]: 196/2647 cut-off events. [2022-09-16 11:46:14,240 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-09-16 11:46:14,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 2647 events. 196/2647 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 18890 event pairs, 0 based on Foata normal form. 6/2230 useless extension candidates. Maximal degree in co-relation 2450. Up to 57 conditions per place. [2022-09-16 11:46:14,349 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 74 selfloop transitions, 46 changer transitions 0/1031 dead transitions. [2022-09-16 11:46:14,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 1031 transitions, 2553 flow [2022-09-16 11:46:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:46:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:46:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10416 transitions. [2022-09-16 11:46:14,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9193292144748455 [2022-09-16 11:46:14,370 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 10416 transitions. [2022-09-16 11:46:14,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 10416 transitions. [2022-09-16 11:46:14,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:14,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 10416 transitions. [2022-09-16 11:46:14,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 946.9090909090909) internal successors, (10416), 11 states have internal predecessors, (10416), 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) [2022-09-16 11:46:14,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1030.0) internal successors, (12360), 12 states have internal predecessors, (12360), 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) [2022-09-16 11:46:14,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1030.0) internal successors, (12360), 12 states have internal predecessors, (12360), 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) [2022-09-16 11:46:14,405 INFO L175 Difference]: Start difference. First operand has 922 places, 1008 transitions, 2257 flow. Second operand 11 states and 10416 transitions. [2022-09-16 11:46:14,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 1031 transitions, 2553 flow [2022-09-16 11:46:14,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1031 transitions, 2521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:14,422 INFO L231 Difference]: Finished difference. Result has 931 places, 1007 transitions, 2370 flow [2022-09-16 11:46:14,424 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2370, PETRI_PLACES=931, PETRI_TRANSITIONS=1007} [2022-09-16 11:46:14,424 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 17 predicate places. [2022-09-16 11:46:14,425 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1007 transitions, 2370 flow [2022-09-16 11:46:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 942.4) internal successors, (14136), 15 states have internal predecessors, (14136), 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) [2022-09-16 11:46:14,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:14,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:14,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:46:14,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:14,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1704927898, now seen corresponding path program 2 times [2022-09-16 11:46:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:14,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753699483] [2022-09-16 11:46:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:46:14,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:14,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753699483] [2022-09-16 11:46:14,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753699483] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:14,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739852428] [2022-09-16 11:46:14,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:46:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:14,806 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) [2022-09-16 11:46:14,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:46:14,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:46:14,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:46:14,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:14,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-09-16 11:46:15,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:46:15,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739852428] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:15,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:46:15,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-09-16 11:46:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467213470] [2022-09-16 11:46:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:15,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:15,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:46:15,310 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:15,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1007 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 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) [2022-09-16 11:46:15,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:15,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:18,305 INFO L130 PetriNetUnfolder]: 988/8848 cut-off events. [2022-09-16 11:46:18,306 INFO L131 PetriNetUnfolder]: For 167/173 co-relation queries the response was YES. [2022-09-16 11:46:18,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 8848 events. 988/8848 cut-off events. For 167/173 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 98387 event pairs, 132 based on Foata normal form. 0/7339 useless extension candidates. Maximal degree in co-relation 3310. Up to 357 conditions per place. [2022-09-16 11:46:18,766 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 61 selfloop transitions, 7 changer transitions 0/1024 dead transitions. [2022-09-16 11:46:18,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1024 transitions, 2553 flow [2022-09-16 11:46:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6649 transitions. [2022-09-16 11:46:18,775 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9221914008321775 [2022-09-16 11:46:18,775 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6649 transitions. [2022-09-16 11:46:18,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6649 transitions. [2022-09-16 11:46:18,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:18,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6649 transitions. [2022-09-16 11:46:18,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.8571428571429) internal successors, (6649), 7 states have internal predecessors, (6649), 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) [2022-09-16 11:46:18,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:18,796 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:18,796 INFO L175 Difference]: Start difference. First operand has 931 places, 1007 transitions, 2370 flow. Second operand 7 states and 6649 transitions. [2022-09-16 11:46:18,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1024 transitions, 2553 flow [2022-09-16 11:46:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1024 transitions, 2482 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-09-16 11:46:18,815 INFO L231 Difference]: Finished difference. Result has 927 places, 1006 transitions, 2311 flow [2022-09-16 11:46:18,816 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2311, PETRI_PLACES=927, PETRI_TRANSITIONS=1006} [2022-09-16 11:46:18,817 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 13 predicate places. [2022-09-16 11:46:18,817 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1006 transitions, 2311 flow [2022-09-16 11:46:18,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 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) [2022-09-16 11:46:18,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:18,819 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:18,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:19,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:19,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:19,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1313159877, now seen corresponding path program 1 times [2022-09-16 11:46:19,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:19,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746780212] [2022-09-16 11:46:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:19,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-09-16 11:46:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746780212] [2022-09-16 11:46:19,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746780212] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:19,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:19,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:19,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780563787] [2022-09-16 11:46:19,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:19,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:19,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1006 transitions, 2311 flow. Second operand has 4 states, 4 states have (on average 941.75) internal successors, (3767), 4 states have internal predecessors, (3767), 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) [2022-09-16 11:46:19,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:19,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:22,597 INFO L130 PetriNetUnfolder]: 1093/10558 cut-off events. [2022-09-16 11:46:22,597 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-09-16 11:46:22,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12362 conditions, 10558 events. 1093/10558 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 122165 event pairs, 180 based on Foata normal form. 18/8785 useless extension candidates. Maximal degree in co-relation 7058. Up to 490 conditions per place. [2022-09-16 11:46:23,000 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 64 selfloop transitions, 8 changer transitions 0/1028 dead transitions. [2022-09-16 11:46:23,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 1028 transitions, 2505 flow [2022-09-16 11:46:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3836 transitions. [2022-09-16 11:46:23,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9310679611650485 [2022-09-16 11:46:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3836 transitions. [2022-09-16 11:46:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3836 transitions. [2022-09-16 11:46:23,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:23,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3836 transitions. [2022-09-16 11:46:23,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 959.0) internal successors, (3836), 4 states have internal predecessors, (3836), 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) [2022-09-16 11:46:23,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:23,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:23,014 INFO L175 Difference]: Start difference. First operand has 927 places, 1006 transitions, 2311 flow. Second operand 4 states and 3836 transitions. [2022-09-16 11:46:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 928 places, 1028 transitions, 2505 flow [2022-09-16 11:46:23,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 924 places, 1028 transitions, 2495 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:23,032 INFO L231 Difference]: Finished difference. Result has 927 places, 1008 transitions, 2347 flow [2022-09-16 11:46:23,033 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2347, PETRI_PLACES=927, PETRI_TRANSITIONS=1008} [2022-09-16 11:46:23,034 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 13 predicate places. [2022-09-16 11:46:23,034 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1008 transitions, 2347 flow [2022-09-16 11:46:23,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 941.75) internal successors, (3767), 4 states have internal predecessors, (3767), 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) [2022-09-16 11:46:23,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:23,035 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:23,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:46:23,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash 567663781, now seen corresponding path program 1 times [2022-09-16 11:46:23,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:23,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773953131] [2022-09-16 11:46:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:46:23,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:23,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773953131] [2022-09-16 11:46:23,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773953131] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:23,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964721253] [2022-09-16 11:46:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:23,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:23,158 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) [2022-09-16 11:46:23,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:46:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:23,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:46:23,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:46:23,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:46:23,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964721253] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:23,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:23,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-09-16 11:46:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29851632] [2022-09-16 11:46:23,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:46:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:46:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:46:23,655 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:46:23,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1008 transitions, 2347 flow. Second operand has 22 states, 22 states have (on average 942.3181818181819) internal successors, (20731), 22 states have internal predecessors, (20731), 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) [2022-09-16 11:46:23,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:23,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:46:23,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:24,426 INFO L130 PetriNetUnfolder]: 64/1177 cut-off events. [2022-09-16 11:46:24,426 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-09-16 11:46:24,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 1177 events. 64/1177 cut-off events. For 121/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5382 event pairs, 0 based on Foata normal form. 6/1036 useless extension candidates. Maximal degree in co-relation 1351. Up to 33 conditions per place. [2022-09-16 11:46:24,461 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 83 selfloop transitions, 51 changer transitions 0/1046 dead transitions. [2022-09-16 11:46:24,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 1046 transitions, 2720 flow [2022-09-16 11:46:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:46:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:46:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16086 transitions. [2022-09-16 11:46:24,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9186750428326671 [2022-09-16 11:46:24,472 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 16086 transitions. [2022-09-16 11:46:24,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 16086 transitions. [2022-09-16 11:46:24,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:24,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 16086 transitions. [2022-09-16 11:46:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 946.2352941176471) internal successors, (16086), 17 states have internal predecessors, (16086), 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) [2022-09-16 11:46:24,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1030.0) internal successors, (18540), 18 states have internal predecessors, (18540), 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) [2022-09-16 11:46:24,515 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1030.0) internal successors, (18540), 18 states have internal predecessors, (18540), 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) [2022-09-16 11:46:24,516 INFO L175 Difference]: Start difference. First operand has 927 places, 1008 transitions, 2347 flow. Second operand 17 states and 16086 transitions. [2022-09-16 11:46:24,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 1046 transitions, 2720 flow [2022-09-16 11:46:24,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 1046 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:46:24,534 INFO L231 Difference]: Finished difference. Result has 945 places, 1004 transitions, 2452 flow [2022-09-16 11:46:24,535 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2452, PETRI_PLACES=945, PETRI_TRANSITIONS=1004} [2022-09-16 11:46:24,536 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 31 predicate places. [2022-09-16 11:46:24,536 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 1004 transitions, 2452 flow [2022-09-16 11:46:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 942.3181818181819) internal successors, (20731), 22 states have internal predecessors, (20731), 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) [2022-09-16 11:46:24,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:24,540 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:24,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:24,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -408704565, now seen corresponding path program 2 times [2022-09-16 11:46:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625335476] [2022-09-16 11:46:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625335476] [2022-09-16 11:46:24,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625335476] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:24,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:24,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768541372] [2022-09-16 11:46:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:24,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:24,925 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:24,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 1004 transitions, 2452 flow. Second operand has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 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) [2022-09-16 11:46:24,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:24,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:24,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:26,906 INFO L130 PetriNetUnfolder]: 928/5308 cut-off events. [2022-09-16 11:46:26,906 INFO L131 PetriNetUnfolder]: For 617/1811 co-relation queries the response was YES. [2022-09-16 11:46:27,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 5308 events. 928/5308 cut-off events. For 617/1811 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 54434 event pairs, 248 based on Foata normal form. 0/4225 useless extension candidates. Maximal degree in co-relation 6489. Up to 491 conditions per place. [2022-09-16 11:46:27,056 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 59 selfloop transitions, 7 changer transitions 0/1019 dead transitions. [2022-09-16 11:46:27,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 1019 transitions, 2625 flow [2022-09-16 11:46:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6647 transitions. [2022-09-16 11:46:27,060 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9219140083217753 [2022-09-16 11:46:27,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6647 transitions. [2022-09-16 11:46:27,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6647 transitions. [2022-09-16 11:46:27,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:27,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6647 transitions. [2022-09-16 11:46:27,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.5714285714286) internal successors, (6647), 7 states have internal predecessors, (6647), 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) [2022-09-16 11:46:27,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:27,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:27,076 INFO L175 Difference]: Start difference. First operand has 945 places, 1004 transitions, 2452 flow. Second operand 7 states and 6647 transitions. [2022-09-16 11:46:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 1019 transitions, 2625 flow [2022-09-16 11:46:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 1019 transitions, 2523 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-09-16 11:46:27,096 INFO L231 Difference]: Finished difference. Result has 934 places, 1003 transitions, 2362 flow [2022-09-16 11:46:27,097 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2362, PETRI_PLACES=934, PETRI_TRANSITIONS=1003} [2022-09-16 11:46:27,098 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 20 predicate places. [2022-09-16 11:46:27,098 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1003 transitions, 2362 flow [2022-09-16 11:46:27,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 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) [2022-09-16 11:46:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:27,099 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:46:27,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 215063221, now seen corresponding path program 1 times [2022-09-16 11:46:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:27,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58329510] [2022-09-16 11:46:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58329510] [2022-09-16 11:46:27,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58329510] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:27,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:27,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964768052] [2022-09-16 11:46:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:27,296 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:27,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1003 transitions, 2362 flow. Second operand has 4 states, 4 states have (on average 942.0) internal successors, (3768), 4 states have internal predecessors, (3768), 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) [2022-09-16 11:46:27,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:27,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:27,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:28,896 INFO L130 PetriNetUnfolder]: 547/3882 cut-off events. [2022-09-16 11:46:28,896 INFO L131 PetriNetUnfolder]: For 466/2368 co-relation queries the response was YES. [2022-09-16 11:46:29,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 3882 events. 547/3882 cut-off events. For 466/2368 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38450 event pairs, 180 based on Foata normal form. 14/3130 useless extension candidates. Maximal degree in co-relation 4656. Up to 426 conditions per place. [2022-09-16 11:46:29,179 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 63 selfloop transitions, 8 changer transitions 0/1024 dead transitions. [2022-09-16 11:46:29,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1024 transitions, 2551 flow [2022-09-16 11:46:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3835 transitions. [2022-09-16 11:46:29,183 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9308252427184466 [2022-09-16 11:46:29,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3835 transitions. [2022-09-16 11:46:29,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3835 transitions. [2022-09-16 11:46:29,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:29,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3835 transitions. [2022-09-16 11:46:29,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 958.75) internal successors, (3835), 4 states have internal predecessors, (3835), 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) [2022-09-16 11:46:29,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:29,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:29,190 INFO L175 Difference]: Start difference. First operand has 934 places, 1003 transitions, 2362 flow. Second operand 4 states and 3835 transitions. [2022-09-16 11:46:29,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1024 transitions, 2551 flow [2022-09-16 11:46:29,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 1024 transitions, 2541 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:29,208 INFO L231 Difference]: Finished difference. Result has 934 places, 1005 transitions, 2398 flow [2022-09-16 11:46:29,209 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2398, PETRI_PLACES=934, PETRI_TRANSITIONS=1005} [2022-09-16 11:46:29,209 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 20 predicate places. [2022-09-16 11:46:29,210 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1005 transitions, 2398 flow [2022-09-16 11:46:29,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.0) internal successors, (3768), 4 states have internal predecessors, (3768), 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) [2022-09-16 11:46:29,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:29,211 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:29,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:46:29,211 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1321738163, now seen corresponding path program 1 times [2022-09-16 11:46:29,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:29,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364471192] [2022-09-16 11:46:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:29,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:29,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364471192] [2022-09-16 11:46:29,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364471192] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:29,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:29,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:29,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144289113] [2022-09-16 11:46:29,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:29,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:29,329 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:29,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1005 transitions, 2398 flow. Second operand has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 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) [2022-09-16 11:46:29,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:29,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:30,823 INFO L130 PetriNetUnfolder]: 402/4178 cut-off events. [2022-09-16 11:46:30,823 INFO L131 PetriNetUnfolder]: For 259/1646 co-relation queries the response was YES. [2022-09-16 11:46:30,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5279 conditions, 4178 events. 402/4178 cut-off events. For 259/1646 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 40505 event pairs, 78 based on Foata normal form. 8/3584 useless extension candidates. Maximal degree in co-relation 4819. Up to 247 conditions per place. [2022-09-16 11:46:30,938 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 61 selfloop transitions, 6 changer transitions 0/1022 dead transitions. [2022-09-16 11:46:30,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 939 places, 1022 transitions, 2579 flow [2022-09-16 11:46:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6646 transitions. [2022-09-16 11:46:30,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9217753120665741 [2022-09-16 11:46:30,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6646 transitions. [2022-09-16 11:46:30,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6646 transitions. [2022-09-16 11:46:30,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:30,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6646 transitions. [2022-09-16 11:46:30,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.4285714285714) internal successors, (6646), 7 states have internal predecessors, (6646), 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) [2022-09-16 11:46:30,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:30,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:30,956 INFO L175 Difference]: Start difference. First operand has 934 places, 1005 transitions, 2398 flow. Second operand 7 states and 6646 transitions. [2022-09-16 11:46:30,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 939 places, 1022 transitions, 2579 flow [2022-09-16 11:46:30,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 1022 transitions, 2579 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:46:30,973 INFO L231 Difference]: Finished difference. Result has 939 places, 1004 transitions, 2408 flow [2022-09-16 11:46:30,975 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=933, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=998, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2408, PETRI_PLACES=939, PETRI_TRANSITIONS=1004} [2022-09-16 11:46:30,975 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 25 predicate places. [2022-09-16 11:46:30,975 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1004 transitions, 2408 flow [2022-09-16 11:46:30,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 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) [2022-09-16 11:46:30,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:30,977 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:30,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:46:30,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 377913748, now seen corresponding path program 1 times [2022-09-16 11:46:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:30,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135459834] [2022-09-16 11:46:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:31,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135459834] [2022-09-16 11:46:31,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135459834] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:31,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:31,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792463370] [2022-09-16 11:46:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:31,053 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:31,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1004 transitions, 2408 flow. Second operand has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 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) [2022-09-16 11:46:31,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:31,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:31,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:32,393 INFO L130 PetriNetUnfolder]: 354/4347 cut-off events. [2022-09-16 11:46:32,393 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-09-16 11:46:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 4347 events. 354/4347 cut-off events. For 238/1880 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 41030 event pairs, 48 based on Foata normal form. 14/3730 useless extension candidates. Maximal degree in co-relation 4854. Up to 204 conditions per place. [2022-09-16 11:46:32,561 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 63 selfloop transitions, 6 changer transitions 0/1022 dead transitions. [2022-09-16 11:46:32,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1022 transitions, 2582 flow [2022-09-16 11:46:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3831 transitions. [2022-09-16 11:46:32,565 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9298543689320389 [2022-09-16 11:46:32,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3831 transitions. [2022-09-16 11:46:32,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3831 transitions. [2022-09-16 11:46:32,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:32,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3831 transitions. [2022-09-16 11:46:32,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.75) internal successors, (3831), 4 states have internal predecessors, (3831), 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) [2022-09-16 11:46:32,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:32,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:32,573 INFO L175 Difference]: Start difference. First operand has 939 places, 1004 transitions, 2408 flow. Second operand 4 states and 3831 transitions. [2022-09-16 11:46:32,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1022 transitions, 2582 flow [2022-09-16 11:46:32,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 1022 transitions, 2568 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:32,756 INFO L231 Difference]: Finished difference. Result has 937 places, 1002 transitions, 2394 flow [2022-09-16 11:46:32,758 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2394, PETRI_PLACES=937, PETRI_TRANSITIONS=1002} [2022-09-16 11:46:32,758 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 23 predicate places. [2022-09-16 11:46:32,758 INFO L495 AbstractCegarLoop]: Abstraction has has 937 places, 1002 transitions, 2394 flow [2022-09-16 11:46:32,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 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) [2022-09-16 11:46:32,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:32,759 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:32,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:46:32,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1169573061, now seen corresponding path program 1 times [2022-09-16 11:46:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491394247] [2022-09-16 11:46:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491394247] [2022-09-16 11:46:32,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491394247] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:32,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:32,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803206848] [2022-09-16 11:46:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:32,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:32,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:32,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 937 places, 1002 transitions, 2394 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:46:32,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:32,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:32,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:34,474 INFO L130 PetriNetUnfolder]: 391/4163 cut-off events. [2022-09-16 11:46:34,474 INFO L131 PetriNetUnfolder]: For 235/2413 co-relation queries the response was YES. [2022-09-16 11:46:34,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 4163 events. 391/4163 cut-off events. For 235/2413 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 40071 event pairs, 108 based on Foata normal form. 12/3581 useless extension candidates. Maximal degree in co-relation 4794. Up to 275 conditions per place. [2022-09-16 11:46:34,599 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 51 selfloop transitions, 6 changer transitions 0/1012 dead transitions. [2022-09-16 11:46:34,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1012 transitions, 2539 flow [2022-09-16 11:46:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6638 transitions. [2022-09-16 11:46:34,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9206657420249653 [2022-09-16 11:46:34,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6638 transitions. [2022-09-16 11:46:34,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6638 transitions. [2022-09-16 11:46:34,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:34,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6638 transitions. [2022-09-16 11:46:34,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.2857142857143) internal successors, (6638), 7 states have internal predecessors, (6638), 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) [2022-09-16 11:46:34,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:34,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:34,615 INFO L175 Difference]: Start difference. First operand has 937 places, 1002 transitions, 2394 flow. Second operand 7 states and 6638 transitions. [2022-09-16 11:46:34,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1012 transitions, 2539 flow [2022-09-16 11:46:34,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 1012 transitions, 2529 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:46:34,633 INFO L231 Difference]: Finished difference. Result has 940 places, 1001 transitions, 2394 flow [2022-09-16 11:46:34,635 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2394, PETRI_PLACES=940, PETRI_TRANSITIONS=1001} [2022-09-16 11:46:34,635 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:46:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1001 transitions, 2394 flow [2022-09-16 11:46:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:46:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:46:34,637 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1572205378, now seen corresponding path program 1 times [2022-09-16 11:46:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:34,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526547049] [2022-09-16 11:46:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:34,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:34,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526547049] [2022-09-16 11:46:34,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526547049] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:34,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:34,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386681702] [2022-09-16 11:46:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:34,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:34,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:34,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:34,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:34,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1001 transitions, 2394 flow. Second operand has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 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) [2022-09-16 11:46:34,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:34,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:34,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:36,350 INFO L130 PetriNetUnfolder]: 364/4348 cut-off events. [2022-09-16 11:46:36,351 INFO L131 PetriNetUnfolder]: For 177/1939 co-relation queries the response was YES. [2022-09-16 11:46:36,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 4348 events. 364/4348 cut-off events. For 177/1939 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 41131 event pairs, 72 based on Foata normal form. 14/3736 useless extension candidates. Maximal degree in co-relation 4892. Up to 214 conditions per place. [2022-09-16 11:46:36,485 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 58 selfloop transitions, 6 changer transitions 0/1019 dead transitions. [2022-09-16 11:46:36,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1019 transitions, 2560 flow [2022-09-16 11:46:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3826 transitions. [2022-09-16 11:46:36,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9286407766990291 [2022-09-16 11:46:36,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3826 transitions. [2022-09-16 11:46:36,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3826 transitions. [2022-09-16 11:46:36,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:36,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3826 transitions. [2022-09-16 11:46:36,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 956.5) internal successors, (3826), 4 states have internal predecessors, (3826), 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) [2022-09-16 11:46:36,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:36,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:36,495 INFO L175 Difference]: Start difference. First operand has 940 places, 1001 transitions, 2394 flow. Second operand 4 states and 3826 transitions. [2022-09-16 11:46:36,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1019 transitions, 2560 flow [2022-09-16 11:46:36,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1019 transitions, 2547 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:36,514 INFO L231 Difference]: Finished difference. Result has 936 places, 1001 transitions, 2397 flow [2022-09-16 11:46:36,515 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=932, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2397, PETRI_PLACES=936, PETRI_TRANSITIONS=1001} [2022-09-16 11:46:36,516 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 22 predicate places. [2022-09-16 11:46:36,516 INFO L495 AbstractCegarLoop]: Abstraction has has 936 places, 1001 transitions, 2397 flow [2022-09-16 11:46:36,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 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) [2022-09-16 11:46:36,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:36,517 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:36,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:46:36,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2139947799, now seen corresponding path program 1 times [2022-09-16 11:46:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:36,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182473306] [2022-09-16 11:46:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:36,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182473306] [2022-09-16 11:46:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182473306] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:36,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:36,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:36,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066672241] [2022-09-16 11:46:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:36,614 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:36,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 1001 transitions, 2397 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:46:36,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:36,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:36,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:39,443 INFO L130 PetriNetUnfolder]: 2567/10219 cut-off events. [2022-09-16 11:46:39,443 INFO L131 PetriNetUnfolder]: For 2157/3006 co-relation queries the response was YES. [2022-09-16 11:46:39,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15121 conditions, 10219 events. 2567/10219 cut-off events. For 2157/3006 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 132032 event pairs, 806 based on Foata normal form. 5/7588 useless extension candidates. Maximal degree in co-relation 14660. Up to 1722 conditions per place. [2022-09-16 11:46:39,619 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 57 selfloop transitions, 7 changer transitions 0/1014 dead transitions. [2022-09-16 11:46:39,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1014 transitions, 2557 flow [2022-09-16 11:46:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6645 transitions. [2022-09-16 11:46:39,623 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9216366158113731 [2022-09-16 11:46:39,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6645 transitions. [2022-09-16 11:46:39,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6645 transitions. [2022-09-16 11:46:39,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:39,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6645 transitions. [2022-09-16 11:46:39,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.2857142857143) internal successors, (6645), 7 states have internal predecessors, (6645), 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) [2022-09-16 11:46:39,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:39,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:39,635 INFO L175 Difference]: Start difference. First operand has 936 places, 1001 transitions, 2397 flow. Second operand 7 states and 6645 transitions. [2022-09-16 11:46:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1014 transitions, 2557 flow [2022-09-16 11:46:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 1014 transitions, 2553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:46:39,760 INFO L231 Difference]: Finished difference. Result has 940 places, 1000 transitions, 2405 flow [2022-09-16 11:46:39,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=940, PETRI_TRANSITIONS=1000} [2022-09-16 11:46:39,762 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:46:39,762 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1000 transitions, 2405 flow [2022-09-16 11:46:39,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:46:39,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:39,763 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:39,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:46:39,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1913869224, now seen corresponding path program 1 times [2022-09-16 11:46:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:39,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902451825] [2022-09-16 11:46:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:39,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902451825] [2022-09-16 11:46:39,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902451825] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:39,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:39,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312801255] [2022-09-16 11:46:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:39,845 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:39,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1000 transitions, 2405 flow. Second operand has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 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) [2022-09-16 11:46:39,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:39,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:42,906 INFO L130 PetriNetUnfolder]: 2828/12108 cut-off events. [2022-09-16 11:46:42,906 INFO L131 PetriNetUnfolder]: For 2912/4247 co-relation queries the response was YES. [2022-09-16 11:46:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17975 conditions, 12108 events. 2828/12108 cut-off events. For 2912/4247 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 170871 event pairs, 1260 based on Foata normal form. 86/8669 useless extension candidates. Maximal degree in co-relation 17516. Up to 2639 conditions per place. [2022-09-16 11:46:43,229 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 62 selfloop transitions, 8 changer transitions 0/1020 dead transitions. [2022-09-16 11:46:43,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1020 transitions, 2587 flow [2022-09-16 11:46:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3834 transitions. [2022-09-16 11:46:43,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9305825242718446 [2022-09-16 11:46:43,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3834 transitions. [2022-09-16 11:46:43,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3834 transitions. [2022-09-16 11:46:43,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:43,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3834 transitions. [2022-09-16 11:46:43,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 958.5) internal successors, (3834), 4 states have internal predecessors, (3834), 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) [2022-09-16 11:46:43,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:43,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:43,236 INFO L175 Difference]: Start difference. First operand has 940 places, 1000 transitions, 2405 flow. Second operand 4 states and 3834 transitions. [2022-09-16 11:46:43,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1020 transitions, 2587 flow [2022-09-16 11:46:43,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 1020 transitions, 2577 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:43,255 INFO L231 Difference]: Finished difference. Result has 940 places, 1002 transitions, 2441 flow [2022-09-16 11:46:43,256 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=990, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2441, PETRI_PLACES=940, PETRI_TRANSITIONS=1002} [2022-09-16 11:46:43,257 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:46:43,257 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1002 transitions, 2441 flow [2022-09-16 11:46:43,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 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) [2022-09-16 11:46:43,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:43,258 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:46:43,258 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1481341175, now seen corresponding path program 1 times [2022-09-16 11:46:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:43,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540194433] [2022-09-16 11:46:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:43,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:43,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540194433] [2022-09-16 11:46:43,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540194433] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:43,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:43,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643206902] [2022-09-16 11:46:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:43,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:43,360 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:43,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1002 transitions, 2441 flow. Second operand has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 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) [2022-09-16 11:46:43,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:43,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:43,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:48,232 INFO L130 PetriNetUnfolder]: 1629/17454 cut-off events. [2022-09-16 11:46:48,232 INFO L131 PetriNetUnfolder]: For 1589/3702 co-relation queries the response was YES. [2022-09-16 11:46:48,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21953 conditions, 17454 events. 1629/17454 cut-off events. For 1589/3702 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 244356 event pairs, 488 based on Foata normal form. 0/14582 useless extension candidates. Maximal degree in co-relation 21490. Up to 1160 conditions per place. [2022-09-16 11:46:48,611 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 59 selfloop transitions, 6 changer transitions 0/1017 dead transitions. [2022-09-16 11:46:48,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 1017 transitions, 2612 flow [2022-09-16 11:46:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6644 transitions. [2022-09-16 11:46:48,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.921497919556172 [2022-09-16 11:46:48,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6644 transitions. [2022-09-16 11:46:48,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6644 transitions. [2022-09-16 11:46:48,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:48,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6644 transitions. [2022-09-16 11:46:48,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.1428571428571) internal successors, (6644), 7 states have internal predecessors, (6644), 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) [2022-09-16 11:46:48,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:48,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:48,627 INFO L175 Difference]: Start difference. First operand has 940 places, 1002 transitions, 2441 flow. Second operand 7 states and 6644 transitions. [2022-09-16 11:46:48,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 1017 transitions, 2612 flow [2022-09-16 11:46:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 1017 transitions, 2612 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:46:48,659 INFO L231 Difference]: Finished difference. Result has 945 places, 1001 transitions, 2451 flow [2022-09-16 11:46:48,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=939, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2451, PETRI_PLACES=945, PETRI_TRANSITIONS=1001} [2022-09-16 11:46:48,660 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 31 predicate places. [2022-09-16 11:46:48,661 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 1001 transitions, 2451 flow [2022-09-16 11:46:48,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 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) [2022-09-16 11:46:48,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:48,662 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:48,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:46:48,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1869801706, now seen corresponding path program 1 times [2022-09-16 11:46:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:48,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637674619] [2022-09-16 11:46:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637674619] [2022-09-16 11:46:48,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637674619] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:48,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:48,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634780901] [2022-09-16 11:46:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:48,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:48,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:48,733 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:48,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 1001 transitions, 2451 flow. Second operand has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 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) [2022-09-16 11:46:48,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:48,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:48,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:51,376 INFO L130 PetriNetUnfolder]: 672/5208 cut-off events. [2022-09-16 11:46:51,376 INFO L131 PetriNetUnfolder]: For 890/3961 co-relation queries the response was YES. [2022-09-16 11:46:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 5208 events. 672/5208 cut-off events. For 890/3961 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 56899 event pairs, 192 based on Foata normal form. 18/4232 useless extension candidates. Maximal degree in co-relation 6646. Up to 640 conditions per place. [2022-09-16 11:46:51,692 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 62 selfloop transitions, 6 changer transitions 0/1018 dead transitions. [2022-09-16 11:46:51,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1018 transitions, 2620 flow [2022-09-16 11:46:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3830 transitions. [2022-09-16 11:46:51,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296116504854369 [2022-09-16 11:46:51,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3830 transitions. [2022-09-16 11:46:51,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3830 transitions. [2022-09-16 11:46:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:51,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3830 transitions. [2022-09-16 11:46:51,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.5) internal successors, (3830), 4 states have internal predecessors, (3830), 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) [2022-09-16 11:46:51,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:51,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:46:51,879 INFO L175 Difference]: Start difference. First operand has 945 places, 1001 transitions, 2451 flow. Second operand 4 states and 3830 transitions. [2022-09-16 11:46:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1018 transitions, 2620 flow [2022-09-16 11:46:51,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 1018 transitions, 2606 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:51,896 INFO L231 Difference]: Finished difference. Result has 943 places, 999 transitions, 2437 flow [2022-09-16 11:46:51,898 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2437, PETRI_PLACES=943, PETRI_TRANSITIONS=999} [2022-09-16 11:46:51,899 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 29 predicate places. [2022-09-16 11:46:51,899 INFO L495 AbstractCegarLoop]: Abstraction has has 943 places, 999 transitions, 2437 flow [2022-09-16 11:46:51,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 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) [2022-09-16 11:46:51,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:51,900 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:51,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:46:51,901 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -485240213, now seen corresponding path program 1 times [2022-09-16 11:46:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:51,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325600455] [2022-09-16 11:46:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:52,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325600455] [2022-09-16 11:46:52,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325600455] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:52,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:52,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:46:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628843058] [2022-09-16 11:46:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:52,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:46:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:46:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:46:52,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:46:52,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 999 transitions, 2437 flow. Second operand has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 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) [2022-09-16 11:46:52,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:52,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:46:52,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:54,016 INFO L130 PetriNetUnfolder]: 560/5274 cut-off events. [2022-09-16 11:46:54,016 INFO L131 PetriNetUnfolder]: For 250/1334 co-relation queries the response was YES. [2022-09-16 11:46:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 5274 events. 560/5274 cut-off events. For 250/1334 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 54650 event pairs, 102 based on Foata normal form. 30/4642 useless extension candidates. Maximal degree in co-relation 6615. Up to 219 conditions per place. [2022-09-16 11:46:54,175 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 69 selfloop transitions, 12 changer transitions 0/1024 dead transitions. [2022-09-16 11:46:54,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 1024 transitions, 2671 flow [2022-09-16 11:46:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:46:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:46:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9382 transitions. [2022-09-16 11:46:54,181 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.910873786407767 [2022-09-16 11:46:54,181 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9382 transitions. [2022-09-16 11:46:54,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9382 transitions. [2022-09-16 11:46:54,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:54,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9382 transitions. [2022-09-16 11:46:54,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.2) internal successors, (9382), 10 states have internal predecessors, (9382), 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) [2022-09-16 11:46:54,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 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) [2022-09-16 11:46:54,199 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 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) [2022-09-16 11:46:54,199 INFO L175 Difference]: Start difference. First operand has 943 places, 999 transitions, 2437 flow. Second operand 10 states and 9382 transitions. [2022-09-16 11:46:54,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 1024 transitions, 2671 flow [2022-09-16 11:46:54,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 950 places, 1024 transitions, 2661 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:46:54,217 INFO L231 Difference]: Finished difference. Result has 952 places, 1000 transitions, 2463 flow [2022-09-16 11:46:54,219 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=952, PETRI_TRANSITIONS=1000} [2022-09-16 11:46:54,219 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 38 predicate places. [2022-09-16 11:46:54,219 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 1000 transitions, 2463 flow [2022-09-16 11:46:54,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 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) [2022-09-16 11:46:54,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:54,221 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:54,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:46:54,221 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2129280934, now seen corresponding path program 1 times [2022-09-16 11:46:54,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237334589] [2022-09-16 11:46:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:54,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237334589] [2022-09-16 11:46:54,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237334589] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:54,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:54,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961087489] [2022-09-16 11:46:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:54,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:54,330 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:46:54,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 1000 transitions, 2463 flow. Second operand has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 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) [2022-09-16 11:46:54,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:54,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:46:54,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:58,094 INFO L130 PetriNetUnfolder]: 1536/10106 cut-off events. [2022-09-16 11:46:58,094 INFO L131 PetriNetUnfolder]: For 1238/3471 co-relation queries the response was YES. [2022-09-16 11:46:58,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13758 conditions, 10106 events. 1536/10106 cut-off events. For 1238/3471 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 127554 event pairs, 679 based on Foata normal form. 3/8353 useless extension candidates. Maximal degree in co-relation 13290. Up to 1232 conditions per place. [2022-09-16 11:46:58,417 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 50 selfloop transitions, 6 changer transitions 0/1009 dead transitions. [2022-09-16 11:46:58,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 1009 transitions, 2603 flow [2022-09-16 11:46:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6637 transitions. [2022-09-16 11:46:58,420 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9205270457697642 [2022-09-16 11:46:58,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6637 transitions. [2022-09-16 11:46:58,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6637 transitions. [2022-09-16 11:46:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:58,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6637 transitions. [2022-09-16 11:46:58,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.1428571428571) internal successors, (6637), 7 states have internal predecessors, (6637), 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) [2022-09-16 11:46:58,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:58,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:46:58,429 INFO L175 Difference]: Start difference. First operand has 952 places, 1000 transitions, 2463 flow. Second operand 7 states and 6637 transitions. [2022-09-16 11:46:58,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 1009 transitions, 2603 flow [2022-09-16 11:46:58,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 953 places, 1009 transitions, 2589 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:58,450 INFO L231 Difference]: Finished difference. Result has 953 places, 999 transitions, 2459 flow [2022-09-16 11:46:58,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=953, PETRI_TRANSITIONS=999} [2022-09-16 11:46:58,452 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 39 predicate places. [2022-09-16 11:46:58,452 INFO L495 AbstractCegarLoop]: Abstraction has has 953 places, 999 transitions, 2459 flow [2022-09-16 11:46:58,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 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) [2022-09-16 11:46:58,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:58,453 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:58,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:46:58,453 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2137425256, now seen corresponding path program 1 times [2022-09-16 11:46:58,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:58,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212457075] [2022-09-16 11:46:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:46:58,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:58,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212457075] [2022-09-16 11:46:58,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212457075] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:58,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:58,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:46:58,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54532722] [2022-09-16 11:46:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:58,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:46:58,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:46:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:46:58,572 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:46:58,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 999 transitions, 2459 flow. Second operand has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 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) [2022-09-16 11:46:58,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:58,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:46:58,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:00,559 INFO L130 PetriNetUnfolder]: 510/5211 cut-off events. [2022-09-16 11:47:00,560 INFO L131 PetriNetUnfolder]: For 411/1371 co-relation queries the response was YES. [2022-09-16 11:47:00,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 5211 events. 510/5211 cut-off events. For 411/1371 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 53845 event pairs, 107 based on Foata normal form. 30/4592 useless extension candidates. Maximal degree in co-relation 6620. Up to 229 conditions per place. [2022-09-16 11:47:00,714 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 71 selfloop transitions, 13 changer transitions 0/1026 dead transitions. [2022-09-16 11:47:00,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1026 transitions, 2722 flow [2022-09-16 11:47:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:47:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:47:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9384 transitions. [2022-09-16 11:47:00,718 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9110679611650485 [2022-09-16 11:47:00,718 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9384 transitions. [2022-09-16 11:47:00,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9384 transitions. [2022-09-16 11:47:00,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:00,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9384 transitions. [2022-09-16 11:47:00,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.4) internal successors, (9384), 10 states have internal predecessors, (9384), 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) [2022-09-16 11:47:00,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 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) [2022-09-16 11:47:00,733 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 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) [2022-09-16 11:47:00,733 INFO L175 Difference]: Start difference. First operand has 953 places, 999 transitions, 2459 flow. Second operand 10 states and 9384 transitions. [2022-09-16 11:47:00,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1026 transitions, 2722 flow [2022-09-16 11:47:00,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 958 places, 1026 transitions, 2700 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:00,751 INFO L231 Difference]: Finished difference. Result has 960 places, 1000 transitions, 2487 flow [2022-09-16 11:47:00,752 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=986, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=960, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:00,752 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 46 predicate places. [2022-09-16 11:47:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 1000 transitions, 2487 flow [2022-09-16 11:47:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 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) [2022-09-16 11:47:00,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:00,754 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:00,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:47:00,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:00,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2085038349, now seen corresponding path program 1 times [2022-09-16 11:47:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:00,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341919740] [2022-09-16 11:47:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:00,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341919740] [2022-09-16 11:47:00,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341919740] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:00,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:00,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200913572] [2022-09-16 11:47:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:00,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:00,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 1000 transitions, 2487 flow. Second operand has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 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) [2022-09-16 11:47:00,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:00,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:03,586 INFO L130 PetriNetUnfolder]: 712/5217 cut-off events. [2022-09-16 11:47:03,587 INFO L131 PetriNetUnfolder]: For 735/3925 co-relation queries the response was YES. [2022-09-16 11:47:03,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 5217 events. 712/5217 cut-off events. For 735/3925 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 58001 event pairs, 288 based on Foata normal form. 18/4232 useless extension candidates. Maximal degree in co-relation 6776. Up to 658 conditions per place. [2022-09-16 11:47:03,877 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 57 selfloop transitions, 6 changer transitions 0/1017 dead transitions. [2022-09-16 11:47:03,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 1017 transitions, 2649 flow [2022-09-16 11:47:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3825 transitions. [2022-09-16 11:47:03,879 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9283980582524272 [2022-09-16 11:47:03,879 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3825 transitions. [2022-09-16 11:47:03,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3825 transitions. [2022-09-16 11:47:03,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:03,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3825 transitions. [2022-09-16 11:47:03,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 956.25) internal successors, (3825), 4 states have internal predecessors, (3825), 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) [2022-09-16 11:47:03,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:47:03,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:47:03,884 INFO L175 Difference]: Start difference. First operand has 960 places, 1000 transitions, 2487 flow. Second operand 4 states and 3825 transitions. [2022-09-16 11:47:03,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 1017 transitions, 2649 flow [2022-09-16 11:47:03,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1017 transitions, 2630 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:03,898 INFO L231 Difference]: Finished difference. Result has 956 places, 1000 transitions, 2485 flow [2022-09-16 11:47:03,900 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=952, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=992, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2485, PETRI_PLACES=956, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:03,900 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 42 predicate places. [2022-09-16 11:47:03,900 INFO L495 AbstractCegarLoop]: Abstraction has has 956 places, 1000 transitions, 2485 flow [2022-09-16 11:47:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 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) [2022-09-16 11:47:03,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:03,901 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:03,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:47:03,902 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:03,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:03,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2023679694, now seen corresponding path program 1 times [2022-09-16 11:47:03,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:03,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600308544] [2022-09-16 11:47:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600308544] [2022-09-16 11:47:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600308544] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:03,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:03,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830030222] [2022-09-16 11:47:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:04,001 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:04,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 1000 transitions, 2485 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:47:04,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:04,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:04,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:05,984 INFO L130 PetriNetUnfolder]: 360/4688 cut-off events. [2022-09-16 11:47:05,984 INFO L131 PetriNetUnfolder]: For 336/2093 co-relation queries the response was YES. [2022-09-16 11:47:06,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6093 conditions, 4688 events. 360/4688 cut-off events. For 336/2093 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 47799 event pairs, 101 based on Foata normal form. 12/4108 useless extension candidates. Maximal degree in co-relation 5625. Up to 264 conditions per place. [2022-09-16 11:47:06,286 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 48 selfloop transitions, 5 changer transitions 0/1007 dead transitions. [2022-09-16 11:47:06,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 1007 transitions, 2613 flow [2022-09-16 11:47:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5692 transitions. [2022-09-16 11:47:06,289 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9210355987055017 [2022-09-16 11:47:06,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5692 transitions. [2022-09-16 11:47:06,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5692 transitions. [2022-09-16 11:47:06,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:06,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5692 transitions. [2022-09-16 11:47:06,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 948.6666666666666) internal successors, (5692), 6 states have internal predecessors, (5692), 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) [2022-09-16 11:47:06,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 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) [2022-09-16 11:47:06,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 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) [2022-09-16 11:47:06,297 INFO L175 Difference]: Start difference. First operand has 956 places, 1000 transitions, 2485 flow. Second operand 6 states and 5692 transitions. [2022-09-16 11:47:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 1007 transitions, 2613 flow [2022-09-16 11:47:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 1007 transitions, 2609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:06,311 INFO L231 Difference]: Finished difference. Result has 959 places, 999 transitions, 2489 flow [2022-09-16 11:47:06,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=954, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2489, PETRI_PLACES=959, PETRI_TRANSITIONS=999} [2022-09-16 11:47:06,312 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 45 predicate places. [2022-09-16 11:47:06,312 INFO L495 AbstractCegarLoop]: Abstraction has has 959 places, 999 transitions, 2489 flow [2022-09-16 11:47:06,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:47:06,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:06,314 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:47:06,314 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 783692175, now seen corresponding path program 1 times [2022-09-16 11:47:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:06,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662433859] [2022-09-16 11:47:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:06,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662433859] [2022-09-16 11:47:06,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662433859] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:06,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:06,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323351524] [2022-09-16 11:47:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:06,417 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:47:06,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 999 transitions, 2489 flow. Second operand has 6 states, 6 states have (on average 904.0) internal successors, (5424), 6 states have internal predecessors, (5424), 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) [2022-09-16 11:47:06,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:06,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:47:06,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:08,036 INFO L130 PetriNetUnfolder]: 346/2518 cut-off events. [2022-09-16 11:47:08,037 INFO L131 PetriNetUnfolder]: For 226/1775 co-relation queries the response was YES. [2022-09-16 11:47:08,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 2518 events. 346/2518 cut-off events. For 226/1775 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20385 event pairs, 152 based on Foata normal form. 33/2280 useless extension candidates. Maximal degree in co-relation 3951. Up to 392 conditions per place. [2022-09-16 11:47:08,151 INFO L137 encePairwiseOnDemand]: 1010/1030 looper letters, 91 selfloop transitions, 18 changer transitions 0/1021 dead transitions. [2022-09-16 11:47:08,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 1021 transitions, 2767 flow [2022-09-16 11:47:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6410 transitions. [2022-09-16 11:47:08,157 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8890429958391124 [2022-09-16 11:47:08,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6410 transitions. [2022-09-16 11:47:08,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6410 transitions. [2022-09-16 11:47:08,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:08,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6410 transitions. [2022-09-16 11:47:08,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 915.7142857142857) internal successors, (6410), 7 states have internal predecessors, (6410), 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) [2022-09-16 11:47:08,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:47:08,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:47:08,167 INFO L175 Difference]: Start difference. First operand has 959 places, 999 transitions, 2489 flow. Second operand 7 states and 6410 transitions. [2022-09-16 11:47:08,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 1021 transitions, 2767 flow [2022-09-16 11:47:08,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 1021 transitions, 2756 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:08,180 INFO L231 Difference]: Finished difference. Result has 964 places, 1007 transitions, 2577 flow [2022-09-16 11:47:08,180 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=953, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=980, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2577, PETRI_PLACES=964, PETRI_TRANSITIONS=1007} [2022-09-16 11:47:08,181 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 50 predicate places. [2022-09-16 11:47:08,181 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 1007 transitions, 2577 flow [2022-09-16 11:47:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.0) internal successors, (5424), 6 states have internal predecessors, (5424), 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) [2022-09-16 11:47:08,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:08,182 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:08,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:47:08,182 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:08,182 INFO L85 PathProgramCache]: Analyzing trace with hash 588802326, now seen corresponding path program 1 times [2022-09-16 11:47:08,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:08,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218265033] [2022-09-16 11:47:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:08,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218265033] [2022-09-16 11:47:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218265033] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:08,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:08,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893317445] [2022-09-16 11:47:08,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:08,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:08,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:47:08,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 1007 transitions, 2577 flow. Second operand has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 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) [2022-09-16 11:47:08,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:08,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:47:08,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:09,652 INFO L130 PetriNetUnfolder]: 330/2496 cut-off events. [2022-09-16 11:47:09,652 INFO L131 PetriNetUnfolder]: For 319/1782 co-relation queries the response was YES. [2022-09-16 11:47:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 2496 events. 330/2496 cut-off events. For 319/1782 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 20050 event pairs, 132 based on Foata normal form. 33/2309 useless extension candidates. Maximal degree in co-relation 4063. Up to 342 conditions per place. [2022-09-16 11:47:09,788 INFO L137 encePairwiseOnDemand]: 1009/1030 looper letters, 111 selfloop transitions, 21 changer transitions 0/1044 dead transitions. [2022-09-16 11:47:09,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 1044 transitions, 2976 flow [2022-09-16 11:47:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6424 transitions. [2022-09-16 11:47:09,792 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8909847434119279 [2022-09-16 11:47:09,792 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6424 transitions. [2022-09-16 11:47:09,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6424 transitions. [2022-09-16 11:47:09,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:09,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6424 transitions. [2022-09-16 11:47:09,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 917.7142857142857) internal successors, (6424), 7 states have internal predecessors, (6424), 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) [2022-09-16 11:47:09,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:47:09,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 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) [2022-09-16 11:47:09,800 INFO L175 Difference]: Start difference. First operand has 964 places, 1007 transitions, 2577 flow. Second operand 7 states and 6424 transitions. [2022-09-16 11:47:09,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 1044 transitions, 2976 flow [2022-09-16 11:47:09,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 968 places, 1044 transitions, 2974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:09,817 INFO L231 Difference]: Finished difference. Result has 973 places, 1018 transitions, 2711 flow [2022-09-16 11:47:09,818 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=985, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2711, PETRI_PLACES=973, PETRI_TRANSITIONS=1018} [2022-09-16 11:47:09,818 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 59 predicate places. [2022-09-16 11:47:09,819 INFO L495 AbstractCegarLoop]: Abstraction has has 973 places, 1018 transitions, 2711 flow [2022-09-16 11:47:09,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 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) [2022-09-16 11:47:09,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:09,820 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:09,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:47:09,820 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1042614259, now seen corresponding path program 1 times [2022-09-16 11:47:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:09,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680907204] [2022-09-16 11:47:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:09,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680907204] [2022-09-16 11:47:09,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680907204] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:09,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:09,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224170432] [2022-09-16 11:47:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:09,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:09,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 1018 transitions, 2711 flow. Second operand has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 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) [2022-09-16 11:47:09,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:09,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:14,279 INFO L130 PetriNetUnfolder]: 3633/15595 cut-off events. [2022-09-16 11:47:14,279 INFO L131 PetriNetUnfolder]: For 4907/6916 co-relation queries the response was YES. [2022-09-16 11:47:14,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24405 conditions, 15595 events. 3633/15595 cut-off events. For 4907/6916 co-relation queries the response was YES. Maximal size of possible extension queue 2720. Compared 237923 event pairs, 1344 based on Foata normal form. 114/11089 useless extension candidates. Maximal degree in co-relation 23935. Up to 3447 conditions per place. [2022-09-16 11:47:14,563 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 62 selfloop transitions, 6 changer transitions 0/1034 dead transitions. [2022-09-16 11:47:14,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 1034 transitions, 2875 flow [2022-09-16 11:47:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3830 transitions. [2022-09-16 11:47:14,566 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296116504854369 [2022-09-16 11:47:14,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3830 transitions. [2022-09-16 11:47:14,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3830 transitions. [2022-09-16 11:47:14,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3830 transitions. [2022-09-16 11:47:14,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.5) internal successors, (3830), 4 states have internal predecessors, (3830), 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) [2022-09-16 11:47:14,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:47:14,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 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) [2022-09-16 11:47:14,572 INFO L175 Difference]: Start difference. First operand has 973 places, 1018 transitions, 2711 flow. Second operand 4 states and 3830 transitions. [2022-09-16 11:47:14,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 1034 transitions, 2875 flow [2022-09-16 11:47:14,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 1034 transitions, 2871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:14,595 INFO L231 Difference]: Finished difference. Result has 975 places, 1016 transitions, 2707 flow [2022-09-16 11:47:14,596 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2707, PETRI_PLACES=975, PETRI_TRANSITIONS=1016} [2022-09-16 11:47:14,596 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 61 predicate places. [2022-09-16 11:47:14,596 INFO L495 AbstractCegarLoop]: Abstraction has has 975 places, 1016 transitions, 2707 flow [2022-09-16 11:47:14,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 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) [2022-09-16 11:47:14,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,597 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:47:14,598 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -98789844, now seen corresponding path program 1 times [2022-09-16 11:47:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459012325] [2022-09-16 11:47:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:14,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459012325] [2022-09-16 11:47:14,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459012325] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:14,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:14,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193763793] [2022-09-16 11:47:14,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:14,696 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:14,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 975 places, 1016 transitions, 2707 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 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) [2022-09-16 11:47:14,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:14,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand