/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-simpl-str-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:46:55,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:46:55,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:46:55,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:46:55,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:46:55,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:46:55,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:46:55,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:46:55,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:46:55,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:46:55,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:46:55,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:46:55,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:46:55,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:46:55,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:46:55,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:46:55,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:46:55,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:46:55,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:46:55,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:46:55,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:46:55,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:46:55,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:46:55,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:46:55,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:46:55,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:46:55,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:46:55,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:46:55,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:46:55,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:46:55,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:46:55,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:46:55,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:46:55,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:46:55,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:46:55,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:46:55,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:46:55,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:46:55,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:46:55,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:46:55,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:46:55,813 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 11:46:55,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:46:55,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:46:55,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:46:55,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:46:55,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:46:55,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:46:55,840 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:46:55,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:46:55,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:46:55,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:46:55,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:46:55,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:46:55,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:46:55,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:46:55,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:46:55,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:46:55,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:46:55,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:46:55,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:46:55,844 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:46:55,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:46:55,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:46:56,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:46:56,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:46:56,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:46:56,075 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:46:56,075 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:46:56,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2022-09-16 11:46:56,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b89e529/d794afd927484735843f48020a728296/FLAGef3c72c94 [2022-09-16 11:46:56,465 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:46:56,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2022-09-16 11:46:56,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b89e529/d794afd927484735843f48020a728296/FLAGef3c72c94 [2022-09-16 11:46:56,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b89e529/d794afd927484735843f48020a728296 [2022-09-16 11:46:56,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:46:56,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:46:56,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:46:56,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:46:56,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:46:56,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:46:56" (1/1) ... [2022-09-16 11:46:56,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49adcd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:56, skipping insertion in model container [2022-09-16 11:46:56,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:46:56" (1/1) ... [2022-09-16 11:46:56,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:46:56,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:46:57,070 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-simpl-str-subst.wvr.c[2575,2588] [2022-09-16 11:46:57,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:46:57,079 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:46:57,093 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-simpl-str-subst.wvr.c[2575,2588] [2022-09-16 11:46:57,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:46:57,105 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:46:57,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57 WrapperNode [2022-09-16 11:46:57,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:46:57,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:46:57,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:46:57,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:46:57,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,138 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2022-09-16 11:46:57,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:46:57,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:46:57,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:46:57,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:46:57,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:46:57,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:46:57,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:46:57,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:46:57,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (1/1) ... [2022-09-16 11:46:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:46:57,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:57,214 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 11:46:57,220 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 11:46:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:46:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:46:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:46:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:46:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:46:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:46:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:46:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:46:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:46:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:46:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:46:57,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:46:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:46:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:46:57,262 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 11:46:57,380 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:46:57,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:46:57,749 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:46:57,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:46:57,757 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:46:57,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:46:57 BoogieIcfgContainer [2022-09-16 11:46:57,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:46:57,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:46:57,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:46:57,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:46:57,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:46:56" (1/3) ... [2022-09-16 11:46:57,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42444f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:46:57, skipping insertion in model container [2022-09-16 11:46:57,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:57" (2/3) ... [2022-09-16 11:46:57,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42444f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:46:57, skipping insertion in model container [2022-09-16 11:46:57,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:46:57" (3/3) ... [2022-09-16 11:46:57,765 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-09-16 11:46:57,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:46:57,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-09-16 11:46:57,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:46:57,878 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:46:57,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 300 transitions, 624 flow [2022-09-16 11:46:58,027 INFO L130 PetriNetUnfolder]: 23/297 cut-off events. [2022-09-16 11:46:58,027 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:46:58,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 23/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 823 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2022-09-16 11:46:58,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 300 transitions, 624 flow [2022-09-16 11:46:58,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 268 transitions, 551 flow [2022-09-16 11:46:58,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:46:58,103 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;@6fc10199, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:46:58,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-09-16 11:46:58,131 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2022-09-16 11:46:58,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:46:58,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:58,132 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] [2022-09-16 11:46:58,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1048367834, now seen corresponding path program 1 times [2022-09-16 11:46:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:58,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514257467] [2022-09-16 11:46:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:58,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:58,346 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 11:46:58,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514257467] [2022-09-16 11:46:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514257467] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:58,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471356259] [2022-09-16 11:46:58,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:58,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:58,386 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:46:58,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 260.8333333333333) internal successors, (1565), 6 states have internal predecessors, (1565), 0 states have call successors, (0), 0 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 11:46:58,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:58,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:46:58,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:58,651 INFO L130 PetriNetUnfolder]: 89/737 cut-off events. [2022-09-16 11:46:58,652 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-09-16 11:46:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 737 events. 89/737 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4219 event pairs, 5 based on Foata normal form. 97/720 useless extension candidates. Maximal degree in co-relation 763. Up to 119 conditions per place. [2022-09-16 11:46:58,668 INFO L137 encePairwiseOnDemand]: 288/300 looper letters, 33 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-09-16 11:46:58,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 269 transitions, 647 flow [2022-09-16 11:46:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:46:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:46:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1607 transitions. [2022-09-16 11:46:58,686 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8927777777777778 [2022-09-16 11:46:58,686 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1607 transitions. [2022-09-16 11:46:58,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1607 transitions. [2022-09-16 11:46:58,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:58,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1607 transitions. [2022-09-16 11:46:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.8333333333333) internal successors, (1607), 6 states have internal predecessors, (1607), 0 states have call successors, (0), 0 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 11:46:58,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:46:58,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:46:58,709 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 551 flow. Second operand 6 states and 1607 transitions. [2022-09-16 11:46:58,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 269 transitions, 647 flow [2022-09-16 11:46:58,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 269 transitions, 628 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:58,729 INFO L231 Difference]: Finished difference. Result has 256 places, 261 transitions, 538 flow [2022-09-16 11:46:58,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=256, PETRI_TRANSITIONS=261} [2022-09-16 11:46:58,734 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, -1 predicate places. [2022-09-16 11:46:58,735 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 261 transitions, 538 flow [2022-09-16 11:46:58,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.8333333333333) internal successors, (1565), 6 states have internal predecessors, (1565), 0 states have call successors, (0), 0 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 11:46:58,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:58,737 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] [2022-09-16 11:46:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:46:58,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1860336267, now seen corresponding path program 1 times [2022-09-16 11:46:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851573247] [2022-09-16 11:46:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:58,814 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 11:46:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851573247] [2022-09-16 11:46:58,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851573247] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:58,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290879969] [2022-09-16 11:46:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:58,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:46:58,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 261 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 11:46:58,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:58,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:46:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:58,977 INFO L130 PetriNetUnfolder]: 74/547 cut-off events. [2022-09-16 11:46:58,977 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-16 11:46:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 547 events. 74/547 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3052 event pairs, 24 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 459. Up to 71 conditions per place. [2022-09-16 11:46:58,988 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 37 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2022-09-16 11:46:58,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 275 transitions, 656 flow [2022-09-16 11:46:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1091 transitions. [2022-09-16 11:46:58,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9091666666666667 [2022-09-16 11:46:58,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1091 transitions. [2022-09-16 11:46:58,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1091 transitions. [2022-09-16 11:46:58,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:58,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1091 transitions. [2022-09-16 11:46:58,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 11:46:58,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:58,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:58,995 INFO L175 Difference]: Start difference. First operand has 256 places, 261 transitions, 538 flow. Second operand 4 states and 1091 transitions. [2022-09-16 11:46:58,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 275 transitions, 656 flow [2022-09-16 11:46:58,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 647 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:59,001 INFO L231 Difference]: Finished difference. Result has 257 places, 262 transitions, 553 flow [2022-09-16 11:46:59,001 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=257, PETRI_TRANSITIONS=262} [2022-09-16 11:46:59,002 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 0 predicate places. [2022-09-16 11:46:59,002 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 262 transitions, 553 flow [2022-09-16 11:46:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 11:46:59,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:59,003 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] [2022-09-16 11:46:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:46:59,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1248049754, now seen corresponding path program 1 times [2022-09-16 11:46:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:59,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5367507] [2022-09-16 11:46:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:59,082 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 11:46:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:59,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5367507] [2022-09-16 11:46:59,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5367507] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:59,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:59,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931309530] [2022-09-16 11:46:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:59,085 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:46:59,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 262 transitions, 553 flow. Second operand has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 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 11:46:59,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:59,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:46:59,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:59,340 INFO L130 PetriNetUnfolder]: 237/1286 cut-off events. [2022-09-16 11:46:59,341 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-09-16 11:46:59,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1286 events. 237/1286 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9665 event pairs, 6 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1520. Up to 327 conditions per place. [2022-09-16 11:46:59,364 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 32 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:46:59,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 268 transitions, 646 flow [2022-09-16 11:46:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:46:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:46:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1592 transitions. [2022-09-16 11:46:59,367 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8844444444444445 [2022-09-16 11:46:59,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1592 transitions. [2022-09-16 11:46:59,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1592 transitions. [2022-09-16 11:46:59,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:59,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1592 transitions. [2022-09-16 11:46:59,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.3333333333333) internal successors, (1592), 6 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 11:46:59,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:46:59,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:46:59,407 INFO L175 Difference]: Start difference. First operand has 257 places, 262 transitions, 553 flow. Second operand 6 states and 1592 transitions. [2022-09-16 11:46:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 268 transitions, 646 flow [2022-09-16 11:46:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 268 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:46:59,411 INFO L231 Difference]: Finished difference. Result has 261 places, 261 transitions, 561 flow [2022-09-16 11:46:59,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2022-09-16 11:46:59,413 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 4 predicate places. [2022-09-16 11:46:59,413 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 561 flow [2022-09-16 11:46:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 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 11:46:59,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:59,414 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] [2022-09-16 11:46:59,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:46:59,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 34837530, now seen corresponding path program 1 times [2022-09-16 11:46:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:59,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647486736] [2022-09-16 11:46:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:59,474 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 11:46:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:59,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647486736] [2022-09-16 11:46:59,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647486736] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:59,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:59,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335330588] [2022-09-16 11:46:59,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:59,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:59,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:59,480 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:46:59,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 11:46:59,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:59,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:46:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:59,665 INFO L130 PetriNetUnfolder]: 133/838 cut-off events. [2022-09-16 11:46:59,666 INFO L131 PetriNetUnfolder]: For 104/164 co-relation queries the response was YES. [2022-09-16 11:46:59,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 838 events. 133/838 cut-off events. For 104/164 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5983 event pairs, 48 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 953. Up to 126 conditions per place. [2022-09-16 11:46:59,687 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 36 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2022-09-16 11:46:59,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 274 transitions, 674 flow [2022-09-16 11:46:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1090 transitions. [2022-09-16 11:46:59,689 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9083333333333333 [2022-09-16 11:46:59,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1090 transitions. [2022-09-16 11:46:59,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1090 transitions. [2022-09-16 11:46:59,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:59,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1090 transitions. [2022-09-16 11:46:59,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 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 11:46:59,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:59,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:59,695 INFO L175 Difference]: Start difference. First operand has 261 places, 261 transitions, 561 flow. Second operand 4 states and 1090 transitions. [2022-09-16 11:46:59,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 274 transitions, 674 flow [2022-09-16 11:46:59,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 274 transitions, 665 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:59,700 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 576 flow [2022-09-16 11:46:59,701 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2022-09-16 11:46:59,702 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 5 predicate places. [2022-09-16 11:46:59,702 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 576 flow [2022-09-16 11:46:59,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 11:46:59,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:59,705 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] [2022-09-16 11:46:59,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:46:59,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1254234482, now seen corresponding path program 1 times [2022-09-16 11:46:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:59,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075274189] [2022-09-16 11:46:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:59,761 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 11:46:59,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:59,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075274189] [2022-09-16 11:46:59,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075274189] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:59,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:59,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508357352] [2022-09-16 11:46:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:59,764 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:46:59,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 576 flow. Second operand has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 11:46:59,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:59,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:46:59,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:59,899 INFO L130 PetriNetUnfolder]: 70/605 cut-off events. [2022-09-16 11:46:59,899 INFO L131 PetriNetUnfolder]: For 45/161 co-relation queries the response was YES. [2022-09-16 11:46:59,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 605 events. 70/605 cut-off events. For 45/161 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3577 event pairs, 24 based on Foata normal form. 7/545 useless extension candidates. Maximal degree in co-relation 828. Up to 72 conditions per place. [2022-09-16 11:46:59,914 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 37 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-09-16 11:46:59,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 274 transitions, 684 flow [2022-09-16 11:46:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:46:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:46:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1089 transitions. [2022-09-16 11:46:59,916 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9075 [2022-09-16 11:46:59,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1089 transitions. [2022-09-16 11:46:59,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1089 transitions. [2022-09-16 11:46:59,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:59,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1089 transitions. [2022-09-16 11:46:59,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 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 11:46:59,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:59,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:46:59,922 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 576 flow. Second operand 4 states and 1089 transitions. [2022-09-16 11:46:59,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 274 transitions, 684 flow [2022-09-16 11:46:59,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 274 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:46:59,926 INFO L231 Difference]: Finished difference. Result has 264 places, 261 transitions, 574 flow [2022-09-16 11:46:59,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=264, PETRI_TRANSITIONS=261} [2022-09-16 11:46:59,928 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 7 predicate places. [2022-09-16 11:46:59,928 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 261 transitions, 574 flow [2022-09-16 11:46:59,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 11:46:59,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:59,929 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] [2022-09-16 11:46:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:46:59,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:46:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 226564048, now seen corresponding path program 1 times [2022-09-16 11:46:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408968818] [2022-09-16 11:46:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:59,996 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 11:46:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408968818] [2022-09-16 11:46:59,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408968818] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:59,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:59,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:46:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440762225] [2022-09-16 11:46:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:46:59,999 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:47:00,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 261 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 11:47:00,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:00,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:47:00,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:00,225 INFO L130 PetriNetUnfolder]: 110/1132 cut-off events. [2022-09-16 11:47:00,225 INFO L131 PetriNetUnfolder]: For 46/52 co-relation queries the response was YES. [2022-09-16 11:47:00,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 1132 events. 110/1132 cut-off events. For 46/52 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7761 event pairs, 7 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1290. Up to 168 conditions per place. [2022-09-16 11:47:00,245 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 31 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:47:00,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 268 transitions, 668 flow [2022-09-16 11:47:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1591 transitions. [2022-09-16 11:47:00,248 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838888888888888 [2022-09-16 11:47:00,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:00,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 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 11:47:00,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,254 INFO L175 Difference]: Start difference. First operand has 264 places, 261 transitions, 574 flow. Second operand 6 states and 1591 transitions. [2022-09-16 11:47:00,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 268 transitions, 668 flow [2022-09-16 11:47:00,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 268 transitions, 663 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:00,259 INFO L231 Difference]: Finished difference. Result has 266 places, 260 transitions, 577 flow [2022-09-16 11:47:00,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=266, PETRI_TRANSITIONS=260} [2022-09-16 11:47:00,260 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 9 predicate places. [2022-09-16 11:47:00,260 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 260 transitions, 577 flow [2022-09-16 11:47:00,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 11:47:00,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:00,261 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] [2022-09-16 11:47:00,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:47:00,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1376287716, now seen corresponding path program 1 times [2022-09-16 11:47:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:00,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353320903] [2022-09-16 11:47:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:00,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:00,301 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 11:47:00,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:00,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353320903] [2022-09-16 11:47:00,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353320903] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:00,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:00,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600757267] [2022-09-16 11:47:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:00,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:00,304 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:47:00,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 260 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 11:47:00,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:00,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:47:00,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:00,610 INFO L130 PetriNetUnfolder]: 378/1914 cut-off events. [2022-09-16 11:47:00,610 INFO L131 PetriNetUnfolder]: For 286/292 co-relation queries the response was YES. [2022-09-16 11:47:00,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1914 events. 378/1914 cut-off events. For 286/292 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15893 event pairs, 4 based on Foata normal form. 0/1530 useless extension candidates. Maximal degree in co-relation 2491. Up to 574 conditions per place. [2022-09-16 11:47:00,627 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 31 selfloop transitions, 5 changer transitions 0/265 dead transitions. [2022-09-16 11:47:00,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 265 transitions, 663 flow [2022-09-16 11:47:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1591 transitions. [2022-09-16 11:47:00,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838888888888888 [2022-09-16 11:47:00,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:00,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1591 transitions. [2022-09-16 11:47:00,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 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 11:47:00,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,635 INFO L175 Difference]: Start difference. First operand has 266 places, 260 transitions, 577 flow. Second operand 6 states and 1591 transitions. [2022-09-16 11:47:00,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 265 transitions, 663 flow [2022-09-16 11:47:00,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 265 transitions, 654 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:00,639 INFO L231 Difference]: Finished difference. Result has 266 places, 259 transitions, 576 flow [2022-09-16 11:47:00,640 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=576, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2022-09-16 11:47:00,640 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 9 predicate places. [2022-09-16 11:47:00,640 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 576 flow [2022-09-16 11:47:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 11:47:00,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:00,641 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] [2022-09-16 11:47:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:47:00,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -439929037, now seen corresponding path program 1 times [2022-09-16 11:47:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858885281] [2022-09-16 11:47:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:00,687 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 11:47:00,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:00,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858885281] [2022-09-16 11:47:00,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858885281] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:00,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:00,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:00,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765428736] [2022-09-16 11:47:00,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:00,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 300 [2022-09-16 11:47:00,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 260.6) internal successors, (1303), 5 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 11:47:00,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:00,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 300 [2022-09-16 11:47:00,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:00,829 INFO L130 PetriNetUnfolder]: 83/641 cut-off events. [2022-09-16 11:47:00,830 INFO L131 PetriNetUnfolder]: For 27/171 co-relation queries the response was YES. [2022-09-16 11:47:00,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 641 events. 83/641 cut-off events. For 27/171 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3909 event pairs, 30 based on Foata normal form. 8/586 useless extension candidates. Maximal degree in co-relation 925. Up to 90 conditions per place. [2022-09-16 11:47:00,848 INFO L137 encePairwiseOnDemand]: 293/300 looper letters, 44 selfloop transitions, 7 changer transitions 0/280 dead transitions. [2022-09-16 11:47:00,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 280 transitions, 732 flow [2022-09-16 11:47:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1600 transitions. [2022-09-16 11:47:00,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-09-16 11:47:00,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1600 transitions. [2022-09-16 11:47:00,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1600 transitions. [2022-09-16 11:47:00,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:00,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1600 transitions. [2022-09-16 11:47:00,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 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 11:47:00,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:00,856 INFO L175 Difference]: Start difference. First operand has 266 places, 259 transitions, 576 flow. Second operand 6 states and 1600 transitions. [2022-09-16 11:47:00,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 280 transitions, 732 flow [2022-09-16 11:47:00,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 280 transitions, 718 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:47:00,863 INFO L231 Difference]: Finished difference. Result has 267 places, 262 transitions, 597 flow [2022-09-16 11:47:00,864 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=597, PETRI_PLACES=267, PETRI_TRANSITIONS=262} [2022-09-16 11:47:00,865 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 10 predicate places. [2022-09-16 11:47:00,865 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 262 transitions, 597 flow [2022-09-16 11:47:00,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.6) internal successors, (1303), 5 states have internal predecessors, (1303), 0 states have call successors, (0), 0 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 11:47:00,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:00,866 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] [2022-09-16 11:47:00,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:47:00,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 284754651, now seen corresponding path program 1 times [2022-09-16 11:47:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685290486] [2022-09-16 11:47:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:00,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:00,906 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 11:47:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:00,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685290486] [2022-09-16 11:47:00,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685290486] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:00,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:00,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053823818] [2022-09-16 11:47:00,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:00,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:00,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:00,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:00,908 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:47:00,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 262 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 11:47:00,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:00,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:47:00,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:01,172 INFO L130 PetriNetUnfolder]: 371/1817 cut-off events. [2022-09-16 11:47:01,172 INFO L131 PetriNetUnfolder]: For 358/612 co-relation queries the response was YES. [2022-09-16 11:47:01,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1817 events. 371/1817 cut-off events. For 358/612 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17320 event pairs, 144 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 2545. Up to 338 conditions per place. [2022-09-16 11:47:01,194 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 35 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2022-09-16 11:47:01,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 274 transitions, 703 flow [2022-09-16 11:47:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1089 transitions. [2022-09-16 11:47:01,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9075 [2022-09-16 11:47:01,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1089 transitions. [2022-09-16 11:47:01,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1089 transitions. [2022-09-16 11:47:01,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:01,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1089 transitions. [2022-09-16 11:47:01,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 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 11:47:01,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:01,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:01,208 INFO L175 Difference]: Start difference. First operand has 267 places, 262 transitions, 597 flow. Second operand 4 states and 1089 transitions. [2022-09-16 11:47:01,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 274 transitions, 703 flow [2022-09-16 11:47:01,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:01,213 INFO L231 Difference]: Finished difference. Result has 271 places, 263 transitions, 618 flow [2022-09-16 11:47:01,213 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=271, PETRI_TRANSITIONS=263} [2022-09-16 11:47:01,214 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 14 predicate places. [2022-09-16 11:47:01,214 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 263 transitions, 618 flow [2022-09-16 11:47:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 11:47:01,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:01,215 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] [2022-09-16 11:47:01,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:47:01,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:01,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:01,216 INFO L85 PathProgramCache]: Analyzing trace with hash 475579777, now seen corresponding path program 1 times [2022-09-16 11:47:01,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:01,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145226605] [2022-09-16 11:47:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:01,256 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 11:47:01,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145226605] [2022-09-16 11:47:01,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145226605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:01,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:01,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089173999] [2022-09-16 11:47:01,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:01,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:01,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:47:01,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 263 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 11:47:01,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:01,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:47:01,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:01,460 INFO L130 PetriNetUnfolder]: 126/880 cut-off events. [2022-09-16 11:47:01,461 INFO L131 PetriNetUnfolder]: For 154/214 co-relation queries the response was YES. [2022-09-16 11:47:01,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 880 events. 126/880 cut-off events. For 154/214 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6476 event pairs, 48 based on Foata normal form. 5/749 useless extension candidates. Maximal degree in co-relation 1243. Up to 121 conditions per place. [2022-09-16 11:47:01,481 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 36 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2022-09-16 11:47:01,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 274 transitions, 721 flow [2022-09-16 11:47:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1088 transitions. [2022-09-16 11:47:01,484 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9066666666666666 [2022-09-16 11:47:01,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1088 transitions. [2022-09-16 11:47:01,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1088 transitions. [2022-09-16 11:47:01,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:01,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1088 transitions. [2022-09-16 11:47:01,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 11:47:01,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:01,488 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:01,488 INFO L175 Difference]: Start difference. First operand has 271 places, 263 transitions, 618 flow. Second operand 4 states and 1088 transitions. [2022-09-16 11:47:01,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 274 transitions, 721 flow [2022-09-16 11:47:01,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 274 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:01,492 INFO L231 Difference]: Finished difference. Result has 273 places, 262 transitions, 616 flow [2022-09-16 11:47:01,493 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=273, PETRI_TRANSITIONS=262} [2022-09-16 11:47:01,494 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 16 predicate places. [2022-09-16 11:47:01,494 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 262 transitions, 616 flow [2022-09-16 11:47:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.5) internal successors, (1058), 4 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 11:47:01,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:01,494 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] [2022-09-16 11:47:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:47:01,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1858072036, now seen corresponding path program 1 times [2022-09-16 11:47:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325148686] [2022-09-16 11:47:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:01,538 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 11:47:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:01,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325148686] [2022-09-16 11:47:01,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325148686] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:01,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:01,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:01,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083576572] [2022-09-16 11:47:01,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:01,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:01,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:01,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:01,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:47:01,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 262 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 11:47:01,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:01,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:47:01,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:01,929 INFO L130 PetriNetUnfolder]: 300/2558 cut-off events. [2022-09-16 11:47:01,930 INFO L131 PetriNetUnfolder]: For 239/406 co-relation queries the response was YES. [2022-09-16 11:47:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 2558 events. 300/2558 cut-off events. For 239/406 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 23731 event pairs, 20 based on Foata normal form. 0/2205 useless extension candidates. Maximal degree in co-relation 2656. Up to 427 conditions per place. [2022-09-16 11:47:01,962 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 30 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2022-09-16 11:47:01,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 705 flow [2022-09-16 11:47:01,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1590 transitions. [2022-09-16 11:47:01,966 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-09-16 11:47:01,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1590 transitions. [2022-09-16 11:47:01,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1590 transitions. [2022-09-16 11:47:01,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:01,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1590 transitions. [2022-09-16 11:47:01,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 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 11:47:01,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:01,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:01,971 INFO L175 Difference]: Start difference. First operand has 273 places, 262 transitions, 616 flow. Second operand 6 states and 1590 transitions. [2022-09-16 11:47:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 705 flow [2022-09-16 11:47:01,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 268 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:01,975 INFO L231 Difference]: Finished difference. Result has 275 places, 261 transitions, 619 flow [2022-09-16 11:47:01,976 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=275, PETRI_TRANSITIONS=261} [2022-09-16 11:47:01,976 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 18 predicate places. [2022-09-16 11:47:01,976 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 261 transitions, 619 flow [2022-09-16 11:47:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 11:47:01,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:01,977 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] [2022-09-16 11:47:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:47:01,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1425157525, now seen corresponding path program 1 times [2022-09-16 11:47:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:01,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330281923] [2022-09-16 11:47:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:02,038 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 11:47:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:02,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330281923] [2022-09-16 11:47:02,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330281923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:02,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:02,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:02,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833947042] [2022-09-16 11:47:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:02,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:02,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 261 transitions, 619 flow. Second operand has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 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 11:47:02,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:02,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:02,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:02,335 INFO L130 PetriNetUnfolder]: 184/1523 cut-off events. [2022-09-16 11:47:02,335 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-09-16 11:47:02,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1523 events. 184/1523 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12373 event pairs, 8 based on Foata normal form. 0/1378 useless extension candidates. Maximal degree in co-relation 2192. Up to 157 conditions per place. [2022-09-16 11:47:02,362 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 41 selfloop transitions, 11 changer transitions 0/277 dead transitions. [2022-09-16 11:47:02,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 277 transitions, 777 flow [2022-09-16 11:47:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2082 transitions. [2022-09-16 11:47:02,366 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8675 [2022-09-16 11:47:02,366 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2082 transitions. [2022-09-16 11:47:02,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2082 transitions. [2022-09-16 11:47:02,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:02,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2082 transitions. [2022-09-16 11:47:02,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.25) internal successors, (2082), 8 states have internal predecessors, (2082), 0 states have call successors, (0), 0 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 11:47:02,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:02,372 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:02,372 INFO L175 Difference]: Start difference. First operand has 275 places, 261 transitions, 619 flow. Second operand 8 states and 2082 transitions. [2022-09-16 11:47:02,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 277 transitions, 777 flow [2022-09-16 11:47:02,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 277 transitions, 760 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:02,376 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 646 flow [2022-09-16 11:47:02,377 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=646, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2022-09-16 11:47:02,377 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 23 predicate places. [2022-09-16 11:47:02,377 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 646 flow [2022-09-16 11:47:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 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 11:47:02,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:02,378 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] [2022-09-16 11:47:02,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:47:02,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1230211097, now seen corresponding path program 1 times [2022-09-16 11:47:02,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:02,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743227198] [2022-09-16 11:47:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:02,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:02,427 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 11:47:02,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:02,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743227198] [2022-09-16 11:47:02,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743227198] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:02,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:02,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094426648] [2022-09-16 11:47:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:02,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:02,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:02,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 256.125) internal successors, (2049), 8 states have internal predecessors, (2049), 0 states have call successors, (0), 0 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 11:47:02,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:02,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:02,664 INFO L130 PetriNetUnfolder]: 155/1109 cut-off events. [2022-09-16 11:47:02,664 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-09-16 11:47:02,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 1109 events. 155/1109 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7964 event pairs, 2 based on Foata normal form. 0/1026 useless extension candidates. Maximal degree in co-relation 1729. Up to 147 conditions per place. [2022-09-16 11:47:02,690 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 43 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-09-16 11:47:02,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 279 transitions, 800 flow [2022-09-16 11:47:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2084 transitions. [2022-09-16 11:47:02,693 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8683333333333333 [2022-09-16 11:47:02,693 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2084 transitions. [2022-09-16 11:47:02,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2084 transitions. [2022-09-16 11:47:02,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:02,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2084 transitions. [2022-09-16 11:47:02,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.5) internal successors, (2084), 8 states have internal predecessors, (2084), 0 states have call successors, (0), 0 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 11:47:02,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:02,699 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:02,699 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 646 flow. Second operand 8 states and 2084 transitions. [2022-09-16 11:47:02,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 279 transitions, 800 flow [2022-09-16 11:47:02,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 279 transitions, 791 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:02,704 INFO L231 Difference]: Finished difference. Result has 285 places, 263 transitions, 667 flow [2022-09-16 11:47:02,705 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=285, PETRI_TRANSITIONS=263} [2022-09-16 11:47:02,705 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 28 predicate places. [2022-09-16 11:47:02,705 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 263 transitions, 667 flow [2022-09-16 11:47:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.125) internal successors, (2049), 8 states have internal predecessors, (2049), 0 states have call successors, (0), 0 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 11:47:02,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:02,706 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] [2022-09-16 11:47:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:47:02,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash -223813465, now seen corresponding path program 1 times [2022-09-16 11:47:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:02,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170269717] [2022-09-16 11:47:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:02,748 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 11:47:02,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:02,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170269717] [2022-09-16 11:47:02,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170269717] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:02,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:02,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779940781] [2022-09-16 11:47:02,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:02,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 300 [2022-09-16 11:47:02,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 263 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 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 11:47:02,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:02,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 300 [2022-09-16 11:47:02,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:02,943 INFO L130 PetriNetUnfolder]: 154/932 cut-off events. [2022-09-16 11:47:02,944 INFO L131 PetriNetUnfolder]: For 162/236 co-relation queries the response was YES. [2022-09-16 11:47:02,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 932 events. 154/932 cut-off events. For 162/236 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7290 event pairs, 60 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 1398. Up to 153 conditions per place. [2022-09-16 11:47:02,971 INFO L137 encePairwiseOnDemand]: 293/300 looper letters, 43 selfloop transitions, 7 changer transitions 0/283 dead transitions. [2022-09-16 11:47:02,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 283 transitions, 818 flow [2022-09-16 11:47:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1599 transitions. [2022-09-16 11:47:02,974 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8883333333333333 [2022-09-16 11:47:02,974 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1599 transitions. [2022-09-16 11:47:02,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1599 transitions. [2022-09-16 11:47:02,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:02,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1599 transitions. [2022-09-16 11:47:02,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 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 11:47:02,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:02,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:02,979 INFO L175 Difference]: Start difference. First operand has 285 places, 263 transitions, 667 flow. Second operand 6 states and 1599 transitions. [2022-09-16 11:47:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 283 transitions, 818 flow [2022-09-16 11:47:02,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 283 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:47:02,983 INFO L231 Difference]: Finished difference. Result has 286 places, 266 transitions, 688 flow [2022-09-16 11:47:02,984 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=286, PETRI_TRANSITIONS=266} [2022-09-16 11:47:02,984 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 29 predicate places. [2022-09-16 11:47:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 266 transitions, 688 flow [2022-09-16 11:47:02,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 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 11:47:02,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:02,985 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] [2022-09-16 11:47:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:47:02,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 889830301, now seen corresponding path program 1 times [2022-09-16 11:47:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:02,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590515500] [2022-09-16 11:47:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,043 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 11:47:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590515500] [2022-09-16 11:47:03,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590515500] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:03,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:03,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236025076] [2022-09-16 11:47:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:03,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:03,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:03,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 266 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 11:47:03,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:03,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:03,234 INFO L130 PetriNetUnfolder]: 112/705 cut-off events. [2022-09-16 11:47:03,234 INFO L131 PetriNetUnfolder]: For 118/322 co-relation queries the response was YES. [2022-09-16 11:47:03,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 705 events. 112/705 cut-off events. For 118/322 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4560 event pairs, 58 based on Foata normal form. 13/670 useless extension candidates. Maximal degree in co-relation 1238. Up to 153 conditions per place. [2022-09-16 11:47:03,248 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 49 selfloop transitions, 7 changer transitions 0/282 dead transitions. [2022-09-16 11:47:03,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 282 transitions, 847 flow [2022-09-16 11:47:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1817 transitions. [2022-09-16 11:47:03,251 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8652380952380953 [2022-09-16 11:47:03,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1817 transitions. [2022-09-16 11:47:03,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1817 transitions. [2022-09-16 11:47:03,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:03,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1817 transitions. [2022-09-16 11:47:03,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.57142857142856) internal successors, (1817), 7 states have internal predecessors, (1817), 0 states have call successors, (0), 0 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 11:47:03,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:03,257 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:03,257 INFO L175 Difference]: Start difference. First operand has 286 places, 266 transitions, 688 flow. Second operand 7 states and 1817 transitions. [2022-09-16 11:47:03,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 282 transitions, 847 flow [2022-09-16 11:47:03,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 282 transitions, 841 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:03,261 INFO L231 Difference]: Finished difference. Result has 293 places, 269 transitions, 718 flow [2022-09-16 11:47:03,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=293, PETRI_TRANSITIONS=269} [2022-09-16 11:47:03,262 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 36 predicate places. [2022-09-16 11:47:03,263 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 269 transitions, 718 flow [2022-09-16 11:47:03,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 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 11:47:03,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:03,263 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] [2022-09-16 11:47:03,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:03,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1753000742, now seen corresponding path program 1 times [2022-09-16 11:47:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:03,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157038874] [2022-09-16 11:47:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,331 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 11:47:03,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157038874] [2022-09-16 11:47:03,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157038874] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:03,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:03,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989602510] [2022-09-16 11:47:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:03,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:03,335 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:03,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 269 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:03,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:03,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:03,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:03,539 INFO L130 PetriNetUnfolder]: 106/696 cut-off events. [2022-09-16 11:47:03,539 INFO L131 PetriNetUnfolder]: For 134/326 co-relation queries the response was YES. [2022-09-16 11:47:03,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 696 events. 106/696 cut-off events. For 134/326 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4398 event pairs, 46 based on Foata normal form. 13/676 useless extension candidates. Maximal degree in co-relation 1282. Up to 126 conditions per place. [2022-09-16 11:47:03,557 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 55 selfloop transitions, 8 changer transitions 0/291 dead transitions. [2022-09-16 11:47:03,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 291 transitions, 920 flow [2022-09-16 11:47:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1823 transitions. [2022-09-16 11:47:03,561 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8680952380952381 [2022-09-16 11:47:03,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1823 transitions. [2022-09-16 11:47:03,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1823 transitions. [2022-09-16 11:47:03,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:03,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1823 transitions. [2022-09-16 11:47:03,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 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 11:47:03,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:03,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:03,567 INFO L175 Difference]: Start difference. First operand has 293 places, 269 transitions, 718 flow. Second operand 7 states and 1823 transitions. [2022-09-16 11:47:03,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 291 transitions, 920 flow [2022-09-16 11:47:03,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 291 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:03,573 INFO L231 Difference]: Finished difference. Result has 301 places, 273 transitions, 765 flow [2022-09-16 11:47:03,574 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=301, PETRI_TRANSITIONS=273} [2022-09-16 11:47:03,574 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 44 predicate places. [2022-09-16 11:47:03,574 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 273 transitions, 765 flow [2022-09-16 11:47:03,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:03,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:03,576 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] [2022-09-16 11:47:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:47:03,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 601650370, now seen corresponding path program 1 times [2022-09-16 11:47:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:03,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239722728] [2022-09-16 11:47:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,608 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 11:47:03,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239722728] [2022-09-16 11:47:03,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239722728] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:03,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:03,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320511687] [2022-09-16 11:47:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:03,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:03,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:03,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:03,611 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:47:03,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 273 transitions, 765 flow. Second operand has 4 states, 4 states have (on average 264.75) internal successors, (1059), 4 states have internal predecessors, (1059), 0 states have call successors, (0), 0 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 11:47:03,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:03,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:47:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:03,898 INFO L130 PetriNetUnfolder]: 357/1805 cut-off events. [2022-09-16 11:47:03,898 INFO L131 PetriNetUnfolder]: For 526/778 co-relation queries the response was YES. [2022-09-16 11:47:03,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1805 events. 357/1805 cut-off events. For 526/778 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17416 event pairs, 144 based on Foata normal form. 13/1436 useless extension candidates. Maximal degree in co-relation 2714. Up to 316 conditions per place. [2022-09-16 11:47:03,922 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 35 selfloop transitions, 3 changer transitions 0/283 dead transitions. [2022-09-16 11:47:03,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 283 transitions, 861 flow [2022-09-16 11:47:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1087 transitions. [2022-09-16 11:47:03,924 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9058333333333334 [2022-09-16 11:47:03,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1087 transitions. [2022-09-16 11:47:03,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1087 transitions. [2022-09-16 11:47:03,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:03,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1087 transitions. [2022-09-16 11:47:03,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 0 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 11:47:03,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:03,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:03,928 INFO L175 Difference]: Start difference. First operand has 301 places, 273 transitions, 765 flow. Second operand 4 states and 1087 transitions. [2022-09-16 11:47:03,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 283 transitions, 861 flow [2022-09-16 11:47:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 283 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:03,933 INFO L231 Difference]: Finished difference. Result has 303 places, 272 transitions, 763 flow [2022-09-16 11:47:03,933 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=763, PETRI_PLACES=303, PETRI_TRANSITIONS=272} [2022-09-16 11:47:03,933 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 46 predicate places. [2022-09-16 11:47:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 272 transitions, 763 flow [2022-09-16 11:47:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.75) internal successors, (1059), 4 states have internal predecessors, (1059), 0 states have call successors, (0), 0 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 11:47:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:03,934 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] [2022-09-16 11:47:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:47:03,934 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1471293190, now seen corresponding path program 1 times [2022-09-16 11:47:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931640933] [2022-09-16 11:47:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,975 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 11:47:03,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931640933] [2022-09-16 11:47:03,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931640933] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:03,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:03,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123209535] [2022-09-16 11:47:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:03,977 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 300 [2022-09-16 11:47:03,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 272 transitions, 763 flow. Second operand has 6 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 0 states have call successors, (0), 0 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 11:47:03,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:03,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 300 [2022-09-16 11:47:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:04,396 INFO L130 PetriNetUnfolder]: 451/2610 cut-off events. [2022-09-16 11:47:04,398 INFO L131 PetriNetUnfolder]: For 473/479 co-relation queries the response was YES. [2022-09-16 11:47:04,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 2610 events. 451/2610 cut-off events. For 473/479 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 24216 event pairs, 4 based on Foata normal form. 0/2179 useless extension candidates. Maximal degree in co-relation 3668. Up to 737 conditions per place. [2022-09-16 11:47:04,435 INFO L137 encePairwiseOnDemand]: 294/300 looper letters, 29 selfloop transitions, 5 changer transitions 0/277 dead transitions. [2022-09-16 11:47:04,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 845 flow [2022-09-16 11:47:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1589 transitions. [2022-09-16 11:47:04,438 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827777777777778 [2022-09-16 11:47:04,439 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1589 transitions. [2022-09-16 11:47:04,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1589 transitions. [2022-09-16 11:47:04,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:04,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1589 transitions. [2022-09-16 11:47:04,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.8333333333333) internal successors, (1589), 6 states have internal predecessors, (1589), 0 states have call successors, (0), 0 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 11:47:04,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:04,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 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 11:47:04,444 INFO L175 Difference]: Start difference. First operand has 303 places, 272 transitions, 763 flow. Second operand 6 states and 1589 transitions. [2022-09-16 11:47:04,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 845 flow [2022-09-16 11:47:04,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 277 transitions, 840 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:04,449 INFO L231 Difference]: Finished difference. Result has 305 places, 271 transitions, 766 flow [2022-09-16 11:47:04,450 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=305, PETRI_TRANSITIONS=271} [2022-09-16 11:47:04,450 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 48 predicate places. [2022-09-16 11:47:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 271 transitions, 766 flow [2022-09-16 11:47:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 0 states have call successors, (0), 0 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 11:47:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:04,451 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] [2022-09-16 11:47:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:47:04,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1566143945, now seen corresponding path program 1 times [2022-09-16 11:47:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:04,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283427260] [2022-09-16 11:47:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:04,511 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 11:47:04,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283427260] [2022-09-16 11:47:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283427260] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:04,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:04,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480882586] [2022-09-16 11:47:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:04,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:04,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:04,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:04,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 271 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 256.125) internal successors, (2049), 8 states have internal predecessors, (2049), 0 states have call successors, (0), 0 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 11:47:04,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:04,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:04,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:04,831 INFO L130 PetriNetUnfolder]: 236/1381 cut-off events. [2022-09-16 11:47:04,832 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-09-16 11:47:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 1381 events. 236/1381 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10985 event pairs, 2 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 2368. Up to 209 conditions per place. [2022-09-16 11:47:04,859 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 40 selfloop transitions, 11 changer transitions 0/286 dead transitions. [2022-09-16 11:47:04,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 286 transitions, 911 flow [2022-09-16 11:47:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2081 transitions. [2022-09-16 11:47:04,862 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8670833333333333 [2022-09-16 11:47:04,862 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2081 transitions. [2022-09-16 11:47:04,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2081 transitions. [2022-09-16 11:47:04,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:04,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2081 transitions. [2022-09-16 11:47:04,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.125) internal successors, (2081), 8 states have internal predecessors, (2081), 0 states have call successors, (0), 0 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 11:47:04,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:04,867 INFO L175 Difference]: Start difference. First operand has 305 places, 271 transitions, 766 flow. Second operand 8 states and 2081 transitions. [2022-09-16 11:47:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 286 transitions, 911 flow [2022-09-16 11:47:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 286 transitions, 902 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:04,873 INFO L231 Difference]: Finished difference. Result has 310 places, 272 transitions, 793 flow [2022-09-16 11:47:04,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=310, PETRI_TRANSITIONS=272} [2022-09-16 11:47:04,873 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 53 predicate places. [2022-09-16 11:47:04,873 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 272 transitions, 793 flow [2022-09-16 11:47:04,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.125) internal successors, (2049), 8 states have internal predecessors, (2049), 0 states have call successors, (0), 0 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 11:47:04,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:04,874 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] [2022-09-16 11:47:04,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:47:04,874 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:04,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1305822888, now seen corresponding path program 1 times [2022-09-16 11:47:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069343727] [2022-09-16 11:47:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:04,922 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 11:47:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:04,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069343727] [2022-09-16 11:47:04,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069343727] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:04,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:04,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:04,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15563761] [2022-09-16 11:47:04,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:04,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:04,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:04,925 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:04,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 272 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 11:47:04,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:04,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:04,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:05,248 INFO L130 PetriNetUnfolder]: 214/1565 cut-off events. [2022-09-16 11:47:05,248 INFO L131 PetriNetUnfolder]: For 357/413 co-relation queries the response was YES. [2022-09-16 11:47:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 1565 events. 214/1565 cut-off events. For 357/413 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13027 event pairs, 7 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 2501. Up to 195 conditions per place. [2022-09-16 11:47:05,288 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 42 selfloop transitions, 9 changer transitions 0/288 dead transitions. [2022-09-16 11:47:05,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 288 transitions, 942 flow [2022-09-16 11:47:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2083 transitions. [2022-09-16 11:47:05,290 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8679166666666667 [2022-09-16 11:47:05,290 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2083 transitions. [2022-09-16 11:47:05,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2083 transitions. [2022-09-16 11:47:05,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:05,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2083 transitions. [2022-09-16 11:47:05,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.375) internal successors, (2083), 8 states have internal predecessors, (2083), 0 states have call successors, (0), 0 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 11:47:05,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:05,295 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:05,296 INFO L175 Difference]: Start difference. First operand has 310 places, 272 transitions, 793 flow. Second operand 8 states and 2083 transitions. [2022-09-16 11:47:05,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 288 transitions, 942 flow [2022-09-16 11:47:05,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 288 transitions, 933 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:05,330 INFO L231 Difference]: Finished difference. Result has 315 places, 273 transitions, 814 flow [2022-09-16 11:47:05,330 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=315, PETRI_TRANSITIONS=273} [2022-09-16 11:47:05,330 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 58 predicate places. [2022-09-16 11:47:05,331 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 273 transitions, 814 flow [2022-09-16 11:47:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 11:47:05,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:05,331 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] [2022-09-16 11:47:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:47:05,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1743872425, now seen corresponding path program 1 times [2022-09-16 11:47:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419521265] [2022-09-16 11:47:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:05,356 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 11:47:05,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:05,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419521265] [2022-09-16 11:47:05,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419521265] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:05,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:05,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511569117] [2022-09-16 11:47:05,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:05,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:05,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 300 [2022-09-16 11:47:05,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 273 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 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 11:47:05,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:05,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 300 [2022-09-16 11:47:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:05,670 INFO L130 PetriNetUnfolder]: 440/2199 cut-off events. [2022-09-16 11:47:05,670 INFO L131 PetriNetUnfolder]: For 518/806 co-relation queries the response was YES. [2022-09-16 11:47:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 2199 events. 440/2199 cut-off events. For 518/806 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22513 event pairs, 216 based on Foata normal form. 13/1744 useless extension candidates. Maximal degree in co-relation 3318. Up to 466 conditions per place. [2022-09-16 11:47:05,704 INFO L137 encePairwiseOnDemand]: 296/300 looper letters, 32 selfloop transitions, 3 changer transitions 0/283 dead transitions. [2022-09-16 11:47:05,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 283 transitions, 906 flow [2022-09-16 11:47:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1084 transitions. [2022-09-16 11:47:05,705 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9033333333333333 [2022-09-16 11:47:05,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1084 transitions. [2022-09-16 11:47:05,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1084 transitions. [2022-09-16 11:47:05,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:05,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1084 transitions. [2022-09-16 11:47:05,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 0 states have call successors, (0), 0 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 11:47:05,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:05,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 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 11:47:05,709 INFO L175 Difference]: Start difference. First operand has 315 places, 273 transitions, 814 flow. Second operand 4 states and 1084 transitions. [2022-09-16 11:47:05,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 283 transitions, 906 flow [2022-09-16 11:47:05,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 283 transitions, 895 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:05,713 INFO L231 Difference]: Finished difference. Result has 313 places, 273 transitions, 812 flow [2022-09-16 11:47:05,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=812, PETRI_PLACES=313, PETRI_TRANSITIONS=273} [2022-09-16 11:47:05,714 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 56 predicate places. [2022-09-16 11:47:05,714 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 273 transitions, 812 flow [2022-09-16 11:47:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 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 11:47:05,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:05,715 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] [2022-09-16 11:47:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:47:05,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 538319564, now seen corresponding path program 1 times [2022-09-16 11:47:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:05,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749646504] [2022-09-16 11:47:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:05,757 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 11:47:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:05,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749646504] [2022-09-16 11:47:05,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749646504] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:05,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:05,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527191928] [2022-09-16 11:47:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:05,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:05,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 273 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:05,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:05,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:06,035 INFO L130 PetriNetUnfolder]: 212/1002 cut-off events. [2022-09-16 11:47:06,035 INFO L131 PetriNetUnfolder]: For 359/463 co-relation queries the response was YES. [2022-09-16 11:47:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 1002 events. 212/1002 cut-off events. For 359/463 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8478 event pairs, 116 based on Foata normal form. 5/872 useless extension candidates. Maximal degree in co-relation 1823. Up to 271 conditions per place. [2022-09-16 11:47:06,071 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 48 selfloop transitions, 7 changer transitions 0/288 dead transitions. [2022-09-16 11:47:06,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 288 transitions, 966 flow [2022-09-16 11:47:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1816 transitions. [2022-09-16 11:47:06,073 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647619047619047 [2022-09-16 11:47:06,073 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1816 transitions. [2022-09-16 11:47:06,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1816 transitions. [2022-09-16 11:47:06,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:06,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1816 transitions. [2022-09-16 11:47:06,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.42857142857144) internal successors, (1816), 7 states have internal predecessors, (1816), 0 states have call successors, (0), 0 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 11:47:06,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:06,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:06,078 INFO L175 Difference]: Start difference. First operand has 313 places, 273 transitions, 812 flow. Second operand 7 states and 1816 transitions. [2022-09-16 11:47:06,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 288 transitions, 966 flow [2022-09-16 11:47:06,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 288 transitions, 961 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:06,083 INFO L231 Difference]: Finished difference. Result has 320 places, 276 transitions, 843 flow [2022-09-16 11:47:06,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=843, PETRI_PLACES=320, PETRI_TRANSITIONS=276} [2022-09-16 11:47:06,084 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 63 predicate places. [2022-09-16 11:47:06,084 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 276 transitions, 843 flow [2022-09-16 11:47:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 11:47:06,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:06,085 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] [2022-09-16 11:47:06,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:47:06,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:06,085 INFO L85 PathProgramCache]: Analyzing trace with hash 235068366, now seen corresponding path program 1 times [2022-09-16 11:47:06,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:06,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075373863] [2022-09-16 11:47:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:06,134 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 11:47:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:06,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075373863] [2022-09-16 11:47:06,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075373863] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:06,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:06,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902054177] [2022-09-16 11:47:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:06,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:06,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:06,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 276 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 11:47:06,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:06,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:06,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:06,467 INFO L130 PetriNetUnfolder]: 200/985 cut-off events. [2022-09-16 11:47:06,468 INFO L131 PetriNetUnfolder]: For 378/476 co-relation queries the response was YES. [2022-09-16 11:47:06,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 985 events. 200/985 cut-off events. For 378/476 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8003 event pairs, 92 based on Foata normal form. 5/886 useless extension candidates. Maximal degree in co-relation 1902. Up to 222 conditions per place. [2022-09-16 11:47:06,500 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 54 selfloop transitions, 8 changer transitions 0/297 dead transitions. [2022-09-16 11:47:06,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 297 transitions, 1040 flow [2022-09-16 11:47:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1822 transitions. [2022-09-16 11:47:06,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676190476190476 [2022-09-16 11:47:06,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1822 transitions. [2022-09-16 11:47:06,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1822 transitions. [2022-09-16 11:47:06,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:06,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1822 transitions. [2022-09-16 11:47:06,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.2857142857143) internal successors, (1822), 7 states have internal predecessors, (1822), 0 states have call successors, (0), 0 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 11:47:06,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:06,507 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:06,507 INFO L175 Difference]: Start difference. First operand has 320 places, 276 transitions, 843 flow. Second operand 7 states and 1822 transitions. [2022-09-16 11:47:06,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 297 transitions, 1040 flow [2022-09-16 11:47:06,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 297 transitions, 1038 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:06,513 INFO L231 Difference]: Finished difference. Result has 328 places, 280 transitions, 890 flow [2022-09-16 11:47:06,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=328, PETRI_TRANSITIONS=280} [2022-09-16 11:47:06,514 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 71 predicate places. [2022-09-16 11:47:06,514 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 280 transitions, 890 flow [2022-09-16 11:47:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 11:47:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:06,515 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] [2022-09-16 11:47:06,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:47:06,515 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 146087563, now seen corresponding path program 1 times [2022-09-16 11:47:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:06,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997092496] [2022-09-16 11:47:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:06,561 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 11:47:06,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997092496] [2022-09-16 11:47:06,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997092496] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:06,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:06,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:06,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123916746] [2022-09-16 11:47:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:06,564 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:06,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 280 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 11:47:06,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:06,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:06,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:07,072 INFO L130 PetriNetUnfolder]: 480/2510 cut-off events. [2022-09-16 11:47:07,073 INFO L131 PetriNetUnfolder]: For 654/804 co-relation queries the response was YES. [2022-09-16 11:47:07,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 2510 events. 480/2510 cut-off events. For 654/804 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25228 event pairs, 2 based on Foata normal form. 0/2097 useless extension candidates. Maximal degree in co-relation 3687. Up to 486 conditions per place. [2022-09-16 11:47:07,132 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 38 selfloop transitions, 9 changer transitions 0/294 dead transitions. [2022-09-16 11:47:07,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 294 transitions, 1020 flow [2022-09-16 11:47:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2080 transitions. [2022-09-16 11:47:07,134 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-09-16 11:47:07,134 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2080 transitions. [2022-09-16 11:47:07,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2080 transitions. [2022-09-16 11:47:07,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:07,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2080 transitions. [2022-09-16 11:47:07,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 11:47:07,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:07,139 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:07,139 INFO L175 Difference]: Start difference. First operand has 328 places, 280 transitions, 890 flow. Second operand 8 states and 2080 transitions. [2022-09-16 11:47:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 294 transitions, 1020 flow [2022-09-16 11:47:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 294 transitions, 1020 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:07,146 INFO L231 Difference]: Finished difference. Result has 337 places, 281 transitions, 920 flow [2022-09-16 11:47:07,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=337, PETRI_TRANSITIONS=281} [2022-09-16 11:47:07,147 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 80 predicate places. [2022-09-16 11:47:07,147 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 281 transitions, 920 flow [2022-09-16 11:47:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 11:47:07,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:07,148 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] [2022-09-16 11:47:07,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:47:07,148 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:07,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash 233748073, now seen corresponding path program 1 times [2022-09-16 11:47:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985429252] [2022-09-16 11:47:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:07,197 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 11:47:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:07,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985429252] [2022-09-16 11:47:07,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985429252] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:07,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:07,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75648330] [2022-09-16 11:47:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:07,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:07,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:07,199 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 300 [2022-09-16 11:47:07,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 281 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 256.375) internal successors, (2051), 8 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 11:47:07,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:07,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 300 [2022-09-16 11:47:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:07,663 INFO L130 PetriNetUnfolder]: 402/2404 cut-off events. [2022-09-16 11:47:07,663 INFO L131 PetriNetUnfolder]: For 710/836 co-relation queries the response was YES. [2022-09-16 11:47:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 2404 events. 402/2404 cut-off events. For 710/836 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23782 event pairs, 2 based on Foata normal form. 0/2081 useless extension candidates. Maximal degree in co-relation 3615. Up to 432 conditions per place. [2022-09-16 11:47:07,710 INFO L137 encePairwiseOnDemand]: 290/300 looper letters, 41 selfloop transitions, 9 changer transitions 0/297 dead transitions. [2022-09-16 11:47:07,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 297 transitions, 1067 flow [2022-09-16 11:47:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:47:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:47:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2082 transitions. [2022-09-16 11:47:07,717 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8675 [2022-09-16 11:47:07,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2082 transitions. [2022-09-16 11:47:07,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2082 transitions. [2022-09-16 11:47:07,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:07,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2082 transitions. [2022-09-16 11:47:07,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.25) internal successors, (2082), 8 states have internal predecessors, (2082), 0 states have call successors, (0), 0 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 11:47:07,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:07,725 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 300.0) internal successors, (2700), 9 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 11:47:07,725 INFO L175 Difference]: Start difference. First operand has 337 places, 281 transitions, 920 flow. Second operand 8 states and 2082 transitions. [2022-09-16 11:47:07,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 297 transitions, 1067 flow [2022-09-16 11:47:07,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 297 transitions, 1058 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:07,732 INFO L231 Difference]: Finished difference. Result has 342 places, 282 transitions, 941 flow [2022-09-16 11:47:07,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=342, PETRI_TRANSITIONS=282} [2022-09-16 11:47:07,733 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 85 predicate places. [2022-09-16 11:47:07,733 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 282 transitions, 941 flow [2022-09-16 11:47:07,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 256.375) internal successors, (2051), 8 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 11:47:07,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:07,734 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] [2022-09-16 11:47:07,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:47:07,734 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:07,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:07,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1066575533, now seen corresponding path program 1 times [2022-09-16 11:47:07,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:07,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003523705] [2022-09-16 11:47:07,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:07,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:07,773 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 11:47:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003523705] [2022-09-16 11:47:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003523705] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:07,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642389166] [2022-09-16 11:47:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:07,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:07,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:07,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 282 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 11:47:07,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:07,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:08,226 INFO L130 PetriNetUnfolder]: 656/2344 cut-off events. [2022-09-16 11:47:08,226 INFO L131 PetriNetUnfolder]: For 1028/1308 co-relation queries the response was YES. [2022-09-16 11:47:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 2344 events. 656/2344 cut-off events. For 1028/1308 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 26500 event pairs, 348 based on Foata normal form. 19/1865 useless extension candidates. Maximal degree in co-relation 4349. Up to 741 conditions per place. [2022-09-16 11:47:08,259 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 40 selfloop transitions, 7 changer transitions 4/296 dead transitions. [2022-09-16 11:47:08,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 296 transitions, 1079 flow [2022-09-16 11:47:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1815 transitions. [2022-09-16 11:47:08,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2022-09-16 11:47:08,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1815 transitions. [2022-09-16 11:47:08,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1815 transitions. [2022-09-16 11:47:08,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:08,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1815 transitions. [2022-09-16 11:47:08,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.2857142857143) internal successors, (1815), 7 states have internal predecessors, (1815), 0 states have call successors, (0), 0 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 11:47:08,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:08,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:08,267 INFO L175 Difference]: Start difference. First operand has 342 places, 282 transitions, 941 flow. Second operand 7 states and 1815 transitions. [2022-09-16 11:47:08,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 296 transitions, 1079 flow [2022-09-16 11:47:08,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 296 transitions, 1068 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:08,275 INFO L231 Difference]: Finished difference. Result has 346 places, 285 transitions, 966 flow [2022-09-16 11:47:08,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=346, PETRI_TRANSITIONS=285} [2022-09-16 11:47:08,275 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 89 predicate places. [2022-09-16 11:47:08,275 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 285 transitions, 966 flow [2022-09-16 11:47:08,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.66666666666666) internal successors, (1534), 6 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 11:47:08,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:08,276 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] [2022-09-16 11:47:08,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:47:08,276 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:47:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -568865712, now seen corresponding path program 1 times [2022-09-16 11:47:08,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:08,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17169890] [2022-09-16 11:47:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:08,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:08,318 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 11:47:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:08,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17169890] [2022-09-16 11:47:08,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17169890] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:08,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:08,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634112120] [2022-09-16 11:47:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:08,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:08,320 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 300 [2022-09-16 11:47:08,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 285 transitions, 966 flow. Second operand has 6 states, 6 states have (on average 255.83333333333334) internal successors, (1535), 6 states have internal predecessors, (1535), 0 states have call successors, (0), 0 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 11:47:08,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:08,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 300 [2022-09-16 11:47:08,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:08,777 INFO L130 PetriNetUnfolder]: 608/2283 cut-off events. [2022-09-16 11:47:08,778 INFO L131 PetriNetUnfolder]: For 1080/1346 co-relation queries the response was YES. [2022-09-16 11:47:08,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2283 events. 608/2283 cut-off events. For 1080/1346 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 24966 event pairs, 288 based on Foata normal form. 13/1901 useless extension candidates. Maximal degree in co-relation 4551. Up to 616 conditions per place. [2022-09-16 11:47:08,800 INFO L137 encePairwiseOnDemand]: 292/300 looper letters, 0 selfloop transitions, 0 changer transitions 306/306 dead transitions. [2022-09-16 11:47:08,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 1160 flow [2022-09-16 11:47:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1821 transitions. [2022-09-16 11:47:08,803 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8671428571428571 [2022-09-16 11:47:08,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1821 transitions. [2022-09-16 11:47:08,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1821 transitions. [2022-09-16 11:47:08,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:08,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1821 transitions. [2022-09-16 11:47:08,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 11:47:08,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:08,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 11:47:08,807 INFO L175 Difference]: Start difference. First operand has 346 places, 285 transitions, 966 flow. Second operand 7 states and 1821 transitions. [2022-09-16 11:47:08,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 1160 flow [2022-09-16 11:47:08,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 306 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:08,816 INFO L231 Difference]: Finished difference. Result has 350 places, 0 transitions, 0 flow [2022-09-16 11:47:08,816 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=350, PETRI_TRANSITIONS=0} [2022-09-16 11:47:08,817 INFO L287 CegarLoopForPetriNet]: 257 programPoint places, 93 predicate places. [2022-09-16 11:47:08,817 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 0 transitions, 0 flow [2022-09-16 11:47:08,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.83333333333334) internal successors, (1535), 6 states have internal predecessors, (1535), 0 states have call successors, (0), 0 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 11:47:08,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-09-16 11:47:08,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-09-16 11:47:08,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-09-16 11:47:08,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-09-16 11:47:08,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-09-16 11:47:08,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-09-16 11:47:08,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-09-16 11:47:08,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-09-16 11:47:08,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-09-16 11:47:08,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:47:08,823 INFO L444 BasicCegarLoop]: Path program 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] [2022-09-16 11:47:08,827 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:47:08,827 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:47:08,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:47:08 BasicIcfg [2022-09-16 11:47:08,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:47:08,831 INFO L158 Benchmark]: Toolchain (without parser) took 11944.78ms. Allocated memory was 177.2MB in the beginning and 651.2MB in the end (delta: 474.0MB). Free memory was 121.4MB in the beginning and 545.5MB in the end (delta: -424.1MB). Peak memory consumption was 376.3MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,831 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory was 137.6MB in the beginning and 137.5MB in the end (delta: 82.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:47:08,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.83ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 152.2MB in the end (delta: -31.0MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.37ms. Allocated memory is still 177.2MB. Free memory was 152.2MB in the beginning and 150.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,832 INFO L158 Benchmark]: Boogie Preprocessor took 20.05ms. Allocated memory is still 177.2MB. Free memory was 149.8MB in the beginning and 148.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,832 INFO L158 Benchmark]: RCFGBuilder took 600.05ms. Allocated memory is still 177.2MB. Free memory was 148.1MB in the beginning and 127.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,832 INFO L158 Benchmark]: TraceAbstraction took 11069.91ms. Allocated memory was 177.2MB in the beginning and 651.2MB in the end (delta: 474.0MB). Free memory was 127.0MB in the beginning and 545.5MB in the end (delta: -418.5MB). Peak memory consumption was 382.0MB. Max. memory is 8.0GB. [2022-09-16 11:47:08,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory was 137.6MB in the beginning and 137.5MB in the end (delta: 82.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.83ms. Allocated memory is still 177.2MB. Free memory was 121.3MB in the beginning and 152.2MB in the end (delta: -31.0MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.37ms. Allocated memory is still 177.2MB. Free memory was 152.2MB in the beginning and 150.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.05ms. Allocated memory is still 177.2MB. Free memory was 149.8MB in the beginning and 148.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 600.05ms. Allocated memory is still 177.2MB. Free memory was 148.1MB in the beginning and 127.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 11069.91ms. Allocated memory was 177.2MB in the beginning and 651.2MB in the end (delta: 474.0MB). Free memory was 127.0MB in the beginning and 545.5MB in the end (delta: -418.5MB). Peak memory consumption was 382.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 464 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1496 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1496 mSDsluCounter, 752 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 945 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2402 IncrementalHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 377 mSDtfsCounter, 2402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:47:08,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...