/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-match-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:44:32,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:44:32,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:44:32,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:44:33,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:44:33,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:44:33,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:44:33,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:44:33,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:44:33,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:44:33,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:44:33,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:44:33,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:44:33,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:44:33,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:44:33,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:44:33,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:44:33,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:44:33,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:44:33,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:44:33,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:44:33,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:44:33,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:44:33,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:44:33,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:44:33,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:44:33,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:44:33,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:44:33,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:44:33,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:44:33,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:44:33,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:44:33,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:44:33,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:44:33,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:44:33,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:44:33,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:44:33,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:44:33,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:44:33,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:44:33,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:44:33,044 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 11:44:33,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:44:33,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:44:33,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:44:33,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:44:33,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:44:33,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:44:33,073 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:44:33,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:44:33,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:44:33,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:44:33,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:44:33,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:44:33,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:44:33,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:33,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:44:33,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:44:33,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:44:33,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:44:33,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:44:33,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:44:33,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:44:33,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:44:33,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:44:33,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:44:33,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:44:33,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:44:33,323 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:44:33,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2022-09-16 11:44:33,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e640b98b/4fb26031f38d44f5af5f965559ae724f/FLAG9ce084d1d [2022-09-16 11:44:33,766 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:44:33,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2022-09-16 11:44:33,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e640b98b/4fb26031f38d44f5af5f965559ae724f/FLAG9ce084d1d [2022-09-16 11:44:33,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e640b98b/4fb26031f38d44f5af5f965559ae724f [2022-09-16 11:44:33,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:44:33,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:44:33,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:33,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:44:33,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:44:33,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:33" (1/1) ... [2022-09-16 11:44:33,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505f9325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:33, skipping insertion in model container [2022-09-16 11:44:33,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:44:33" (1/1) ... [2022-09-16 11:44:33,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:44:33,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:44:33,995 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-match-subst.wvr.c[3017,3030] [2022-09-16 11:44:33,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:34,004 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:44:34,024 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-match-subst.wvr.c[3017,3030] [2022-09-16 11:44:34,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:44:34,038 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:44:34,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34 WrapperNode [2022-09-16 11:44:34,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:44:34,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:34,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:44:34,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:44:34,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,090 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 338 [2022-09-16 11:44:34,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:44:34,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:44:34,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:44:34,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:44:34,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:44:34,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:44:34,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:44:34,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:44:34,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (1/1) ... [2022-09-16 11:44:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:44:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:44:34,177 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 11:44:34,181 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 11:44:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:44:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:44:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:44:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:44:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:44:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:44:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:44:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:44:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:44:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:44:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:44:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:44:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:44:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:44:34,210 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 11:44:34,301 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:44:34,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:44:34,833 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:44:34,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:44:34,848 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:44:34,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:34 BoogieIcfgContainer [2022-09-16 11:44:34,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:44:34,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:44:34,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:44:34,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:44:34,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:44:33" (1/3) ... [2022-09-16 11:44:34,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a05e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:34, skipping insertion in model container [2022-09-16 11:44:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:44:34" (2/3) ... [2022-09-16 11:44:34,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a05e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:44:34, skipping insertion in model container [2022-09-16 11:44:34,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:44:34" (3/3) ... [2022-09-16 11:44:34,861 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-09-16 11:44:34,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:44:34,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-09-16 11:44:34,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:44:35,031 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:44:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 480 transitions, 984 flow [2022-09-16 11:44:35,339 INFO L130 PetriNetUnfolder]: 38/477 cut-off events. [2022-09-16 11:44:35,339 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:44:35,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 477 events. 38/477 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1167 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 388. Up to 2 conditions per place. [2022-09-16 11:44:35,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 480 transitions, 984 flow [2022-09-16 11:44:35,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 448 transitions, 911 flow [2022-09-16 11:44:35,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:44:35,406 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;@789956dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:44:35,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-09-16 11:44:35,417 INFO L130 PetriNetUnfolder]: 0/79 cut-off events. [2022-09-16 11:44:35,418 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:44:35,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:35,418 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 11:44:35,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash -245144249, now seen corresponding path program 1 times [2022-09-16 11:44:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:35,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978772800] [2022-09-16 11:44:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:35,708 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 11:44:35,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:35,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978772800] [2022-09-16 11:44:35,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978772800] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:35,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:35,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203725014] [2022-09-16 11:44:35,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:35,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:35,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:35,755 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:35,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 448 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 414.8333333333333) internal successors, (2489), 6 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:35,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:35,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:35,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:36,368 INFO L130 PetriNetUnfolder]: 303/1679 cut-off events. [2022-09-16 11:44:36,369 INFO L131 PetriNetUnfolder]: For 145/191 co-relation queries the response was YES. [2022-09-16 11:44:36,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 1679 events. 303/1679 cut-off events. For 145/191 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10906 event pairs, 67 based on Foata normal form. 414/1819 useless extension candidates. Maximal degree in co-relation 2283. Up to 160 conditions per place. [2022-09-16 11:44:36,432 INFO L137 encePairwiseOnDemand]: 458/480 looper letters, 57 selfloop transitions, 9 changer transitions 0/451 dead transitions. [2022-09-16 11:44:36,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 451 transitions, 1073 flow [2022-09-16 11:44:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2995 transitions. [2022-09-16 11:44:36,456 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8913690476190477 [2022-09-16 11:44:36,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2995 transitions. [2022-09-16 11:44:36,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2995 transitions. [2022-09-16 11:44:36,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:36,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2995 transitions. [2022-09-16 11:44:36,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 427.85714285714283) internal successors, (2995), 7 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,489 INFO L175 Difference]: Start difference. First operand has 422 places, 448 transitions, 911 flow. Second operand 7 states and 2995 transitions. [2022-09-16 11:44:36,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 451 transitions, 1073 flow [2022-09-16 11:44:36,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 451 transitions, 1051 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:44:36,508 INFO L231 Difference]: Finished difference. Result has 422 places, 435 transitions, 894 flow [2022-09-16 11:44:36,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=422, PETRI_TRANSITIONS=435} [2022-09-16 11:44:36,514 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 0 predicate places. [2022-09-16 11:44:36,514 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 435 transitions, 894 flow [2022-09-16 11:44:36,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 414.8333333333333) internal successors, (2489), 6 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:36,516 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] [2022-09-16 11:44:36,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:44:36,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:36,517 INFO L85 PathProgramCache]: Analyzing trace with hash 990464031, now seen corresponding path program 1 times [2022-09-16 11:44:36,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:36,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107341821] [2022-09-16 11:44:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:36,636 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 11:44:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107341821] [2022-09-16 11:44:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107341821] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:36,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:36,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373667575] [2022-09-16 11:44:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:36,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:36,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 435 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 414.75) internal successors, (1659), 4 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:36,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:36,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:36,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:37,004 INFO L130 PetriNetUnfolder]: 190/1181 cut-off events. [2022-09-16 11:44:37,005 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-09-16 11:44:37,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1181 events. 190/1181 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7546 event pairs, 60 based on Foata normal form. 6/1014 useless extension candidates. Maximal degree in co-relation 1027. Up to 164 conditions per place. [2022-09-16 11:44:37,088 INFO L137 encePairwiseOnDemand]: 467/480 looper letters, 64 selfloop transitions, 9 changer transitions 0/458 dead transitions. [2022-09-16 11:44:37,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 458 transitions, 1094 flow [2022-09-16 11:44:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1729 transitions. [2022-09-16 11:44:37,092 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9005208333333333 [2022-09-16 11:44:37,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1729 transitions. [2022-09-16 11:44:37,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1729 transitions. [2022-09-16 11:44:37,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:37,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1729 transitions. [2022-09-16 11:44:37,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 432.25) internal successors, (1729), 4 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:37,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:37,102 INFO L175 Difference]: Start difference. First operand has 422 places, 435 transitions, 894 flow. Second operand 4 states and 1729 transitions. [2022-09-16 11:44:37,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 458 transitions, 1094 flow [2022-09-16 11:44:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 458 transitions, 1076 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:37,112 INFO L231 Difference]: Finished difference. Result has 420 places, 438 transitions, 932 flow [2022-09-16 11:44:37,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=420, PETRI_TRANSITIONS=438} [2022-09-16 11:44:37,113 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, -2 predicate places. [2022-09-16 11:44:37,114 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 438 transitions, 932 flow [2022-09-16 11:44:37,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 414.75) internal successors, (1659), 4 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:37,115 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 11:44:37,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:44:37,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:37,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1170932356, now seen corresponding path program 1 times [2022-09-16 11:44:37,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:37,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743169520] [2022-09-16 11:44:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:37,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:37,220 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 11:44:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743169520] [2022-09-16 11:44:37,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743169520] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:37,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:37,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821417118] [2022-09-16 11:44:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:37,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:37,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:37,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 438 transitions, 932 flow. Second operand has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:37,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:37,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:37,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:38,094 INFO L130 PetriNetUnfolder]: 429/3060 cut-off events. [2022-09-16 11:44:38,095 INFO L131 PetriNetUnfolder]: For 137/175 co-relation queries the response was YES. [2022-09-16 11:44:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 3060 events. 429/3060 cut-off events. For 137/175 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 23907 event pairs, 32 based on Foata normal form. 2/2519 useless extension candidates. Maximal degree in co-relation 2053. Up to 192 conditions per place. [2022-09-16 11:44:38,171 INFO L137 encePairwiseOnDemand]: 470/480 looper letters, 56 selfloop transitions, 9 changer transitions 0/452 dead transitions. [2022-09-16 11:44:38,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 452 transitions, 1100 flow [2022-09-16 11:44:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2957 transitions. [2022-09-16 11:44:38,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8800595238095238 [2022-09-16 11:44:38,178 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2957 transitions. [2022-09-16 11:44:38,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2957 transitions. [2022-09-16 11:44:38,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:38,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2957 transitions. [2022-09-16 11:44:38,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.42857142857144) internal successors, (2957), 7 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,196 INFO L175 Difference]: Start difference. First operand has 420 places, 438 transitions, 932 flow. Second operand 7 states and 2957 transitions. [2022-09-16 11:44:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 452 transitions, 1100 flow [2022-09-16 11:44:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 452 transitions, 1100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:44:38,206 INFO L231 Difference]: Finished difference. Result has 425 places, 437 transitions, 948 flow [2022-09-16 11:44:38,207 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=948, PETRI_PLACES=425, PETRI_TRANSITIONS=437} [2022-09-16 11:44:38,209 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 3 predicate places. [2022-09-16 11:44:38,209 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 437 transitions, 948 flow [2022-09-16 11:44:38,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:38,211 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 11:44:38,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:44:38,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1939165949, now seen corresponding path program 1 times [2022-09-16 11:44:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850717695] [2022-09-16 11:44:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:38,282 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 11:44:38,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:38,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850717695] [2022-09-16 11:44:38,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850717695] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:38,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:38,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:38,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914522493] [2022-09-16 11:44:38,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:38,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:38,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:38,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 437 transitions, 948 flow. Second operand has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:38,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:38,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:38,813 INFO L130 PetriNetUnfolder]: 274/1575 cut-off events. [2022-09-16 11:44:38,813 INFO L131 PetriNetUnfolder]: For 161/291 co-relation queries the response was YES. [2022-09-16 11:44:38,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1575 events. 274/1575 cut-off events. For 161/291 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12035 event pairs, 90 based on Foata normal form. 8/1247 useless extension candidates. Maximal degree in co-relation 1580. Up to 228 conditions per place. [2022-09-16 11:44:38,933 INFO L137 encePairwiseOnDemand]: 467/480 looper letters, 63 selfloop transitions, 9 changer transitions 0/459 dead transitions. [2022-09-16 11:44:38,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 459 transitions, 1143 flow [2022-09-16 11:44:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1728 transitions. [2022-09-16 11:44:38,937 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-09-16 11:44:38,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1728 transitions. [2022-09-16 11:44:38,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1728 transitions. [2022-09-16 11:44:38,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:38,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1728 transitions. [2022-09-16 11:44:38,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:38,947 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:38,947 INFO L175 Difference]: Start difference. First operand has 425 places, 437 transitions, 948 flow. Second operand 4 states and 1728 transitions. [2022-09-16 11:44:38,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 459 transitions, 1143 flow [2022-09-16 11:44:38,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 459 transitions, 1125 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:38,957 INFO L231 Difference]: Finished difference. Result has 423 places, 440 transitions, 986 flow [2022-09-16 11:44:38,958 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=986, PETRI_PLACES=423, PETRI_TRANSITIONS=440} [2022-09-16 11:44:38,959 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 1 predicate places. [2022-09-16 11:44:38,960 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 440 transitions, 986 flow [2022-09-16 11:44:38,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:38,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:38,965 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 11:44:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:44:38,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -419959418, now seen corresponding path program 1 times [2022-09-16 11:44:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:38,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789363664] [2022-09-16 11:44:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:38,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:39,035 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 11:44:39,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:39,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789363664] [2022-09-16 11:44:39,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789363664] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:39,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:39,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:39,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183422910] [2022-09-16 11:44:39,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:39,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:39,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:39,039 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:39,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 440 transitions, 986 flow. Second operand has 4 states, 4 states have (on average 415.25) internal successors, (1661), 4 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:39,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:39,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:39,428 INFO L130 PetriNetUnfolder]: 168/1124 cut-off events. [2022-09-16 11:44:39,429 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-09-16 11:44:39,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 1124 events. 168/1124 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7083 event pairs, 48 based on Foata normal form. 6/978 useless extension candidates. Maximal degree in co-relation 1490. Up to 130 conditions per place. [2022-09-16 11:44:39,477 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 64 selfloop transitions, 7 changer transitions 0/458 dead transitions. [2022-09-16 11:44:39,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 458 transitions, 1164 flow [2022-09-16 11:44:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1725 transitions. [2022-09-16 11:44:39,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8984375 [2022-09-16 11:44:39,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1725 transitions. [2022-09-16 11:44:39,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1725 transitions. [2022-09-16 11:44:39,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:39,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1725 transitions. [2022-09-16 11:44:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:39,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:39,491 INFO L175 Difference]: Start difference. First operand has 423 places, 440 transitions, 986 flow. Second operand 4 states and 1725 transitions. [2022-09-16 11:44:39,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 458 transitions, 1164 flow [2022-09-16 11:44:39,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 458 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:39,500 INFO L231 Difference]: Finished difference. Result has 425 places, 438 transitions, 983 flow [2022-09-16 11:44:39,500 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=983, PETRI_PLACES=425, PETRI_TRANSITIONS=438} [2022-09-16 11:44:39,501 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 3 predicate places. [2022-09-16 11:44:39,501 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 438 transitions, 983 flow [2022-09-16 11:44:39,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.25) internal successors, (1661), 4 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:39,502 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 11:44:39,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:44:39,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:39,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:39,503 INFO L85 PathProgramCache]: Analyzing trace with hash -133838895, now seen corresponding path program 1 times [2022-09-16 11:44:39,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:39,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123831846] [2022-09-16 11:44:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:39,553 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 11:44:39,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:39,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123831846] [2022-09-16 11:44:39,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123831846] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:39,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:39,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976699264] [2022-09-16 11:44:39,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:39,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:39,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:39,558 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:39,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 438 transitions, 983 flow. Second operand has 6 states, 6 states have (on average 415.1666666666667) internal successors, (2491), 6 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:39,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:39,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:40,358 INFO L130 PetriNetUnfolder]: 432/3468 cut-off events. [2022-09-16 11:44:40,358 INFO L131 PetriNetUnfolder]: For 133/313 co-relation queries the response was YES. [2022-09-16 11:44:40,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4523 conditions, 3468 events. 432/3468 cut-off events. For 133/313 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28826 event pairs, 90 based on Foata normal form. 2/2951 useless extension candidates. Maximal degree in co-relation 3211. Up to 239 conditions per place. [2022-09-16 11:44:40,459 INFO L137 encePairwiseOnDemand]: 470/480 looper letters, 47 selfloop transitions, 10 changer transitions 0/446 dead transitions. [2022-09-16 11:44:40,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 446 transitions, 1122 flow [2022-09-16 11:44:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:44:40,466 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:44:40,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:44:40,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:44:40,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:40,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:44:40,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,491 INFO L175 Difference]: Start difference. First operand has 425 places, 438 transitions, 983 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:44:40,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 446 transitions, 1122 flow [2022-09-16 11:44:40,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 446 transitions, 1111 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:40,501 INFO L231 Difference]: Finished difference. Result has 428 places, 437 transitions, 990 flow [2022-09-16 11:44:40,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=990, PETRI_PLACES=428, PETRI_TRANSITIONS=437} [2022-09-16 11:44:40,504 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 6 predicate places. [2022-09-16 11:44:40,504 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 437 transitions, 990 flow [2022-09-16 11:44:40,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 415.1666666666667) internal successors, (2491), 6 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:40,505 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 11:44:40,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:44:40,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1105206676, now seen corresponding path program 1 times [2022-09-16 11:44:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995852067] [2022-09-16 11:44:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:40,553 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 11:44:40,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995852067] [2022-09-16 11:44:40,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995852067] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:40,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:40,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233902015] [2022-09-16 11:44:40,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:40,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:40,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:40,562 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:40,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 437 transitions, 990 flow. Second operand has 4 states, 4 states have (on average 415.5) internal successors, (1662), 4 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:40,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:40,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:40,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:40,972 INFO L130 PetriNetUnfolder]: 211/1347 cut-off events. [2022-09-16 11:44:40,972 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-09-16 11:44:41,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 1347 events. 211/1347 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9129 event pairs, 74 based on Foata normal form. 6/1176 useless extension candidates. Maximal degree in co-relation 1863. Up to 201 conditions per place. [2022-09-16 11:44:41,030 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 60 selfloop transitions, 7 changer transitions 0/456 dead transitions. [2022-09-16 11:44:41,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 456 transitions, 1169 flow [2022-09-16 11:44:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1720 transitions. [2022-09-16 11:44:41,034 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2022-09-16 11:44:41,034 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1720 transitions. [2022-09-16 11:44:41,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1720 transitions. [2022-09-16 11:44:41,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:41,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1720 transitions. [2022-09-16 11:44:41,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:41,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:41,042 INFO L175 Difference]: Start difference. First operand has 428 places, 437 transitions, 990 flow. Second operand 4 states and 1720 transitions. [2022-09-16 11:44:41,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 456 transitions, 1169 flow [2022-09-16 11:44:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 456 transitions, 1144 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:41,050 INFO L231 Difference]: Finished difference. Result has 424 places, 438 transitions, 995 flow [2022-09-16 11:44:41,050 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=995, PETRI_PLACES=424, PETRI_TRANSITIONS=438} [2022-09-16 11:44:41,051 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 2 predicate places. [2022-09-16 11:44:41,051 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 438 transitions, 995 flow [2022-09-16 11:44:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.5) internal successors, (1662), 4 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:41,052 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 11:44:41,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:44:41,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 897090237, now seen corresponding path program 1 times [2022-09-16 11:44:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:41,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386983802] [2022-09-16 11:44:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:41,098 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 11:44:41,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:41,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386983802] [2022-09-16 11:44:41,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386983802] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:41,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633108121] [2022-09-16 11:44:41,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:41,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:41,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:41,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:41,102 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:41,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 438 transitions, 995 flow. Second operand has 6 states, 6 states have (on average 415.1666666666667) internal successors, (2491), 6 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:41,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:41,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:41,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:42,095 INFO L130 PetriNetUnfolder]: 721/3938 cut-off events. [2022-09-16 11:44:42,096 INFO L131 PetriNetUnfolder]: For 424/454 co-relation queries the response was YES. [2022-09-16 11:44:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 3938 events. 721/3938 cut-off events. For 424/454 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41153 event pairs, 126 based on Foata normal form. 0/3043 useless extension candidates. Maximal degree in co-relation 4139. Up to 401 conditions per place. [2022-09-16 11:44:42,228 INFO L137 encePairwiseOnDemand]: 470/480 looper letters, 55 selfloop transitions, 9 changer transitions 0/451 dead transitions. [2022-09-16 11:44:42,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 451 transitions, 1155 flow [2022-09-16 11:44:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2956 transitions. [2022-09-16 11:44:42,236 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2022-09-16 11:44:42,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2956 transitions. [2022-09-16 11:44:42,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2956 transitions. [2022-09-16 11:44:42,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:42,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2956 transitions. [2022-09-16 11:44:42,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.2857142857143) internal successors, (2956), 7 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:42,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:42,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:42,248 INFO L175 Difference]: Start difference. First operand has 424 places, 438 transitions, 995 flow. Second operand 7 states and 2956 transitions. [2022-09-16 11:44:42,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 451 transitions, 1155 flow [2022-09-16 11:44:42,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 451 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:42,256 INFO L231 Difference]: Finished difference. Result has 428 places, 437 transitions, 1006 flow [2022-09-16 11:44:42,257 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1006, PETRI_PLACES=428, PETRI_TRANSITIONS=437} [2022-09-16 11:44:42,259 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 6 predicate places. [2022-09-16 11:44:42,260 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 437 transitions, 1006 flow [2022-09-16 11:44:42,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 415.1666666666667) internal successors, (2491), 6 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:42,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:42,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:44:42,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2039994975, now seen corresponding path program 1 times [2022-09-16 11:44:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26643638] [2022-09-16 11:44:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:42,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:42,316 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 11:44:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26643638] [2022-09-16 11:44:42,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26643638] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:42,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:42,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388013619] [2022-09-16 11:44:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:42,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:42,320 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:42,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 437 transitions, 1006 flow. Second operand has 4 states, 4 states have (on average 415.25) internal successors, (1661), 4 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:42,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:42,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:42,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:43,250 INFO L130 PetriNetUnfolder]: 754/3544 cut-off events. [2022-09-16 11:44:43,250 INFO L131 PetriNetUnfolder]: For 639/645 co-relation queries the response was YES. [2022-09-16 11:44:43,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 3544 events. 754/3544 cut-off events. For 639/645 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38152 event pairs, 270 based on Foata normal form. 20/2718 useless extension candidates. Maximal degree in co-relation 4843. Up to 603 conditions per place. [2022-09-16 11:44:43,366 INFO L137 encePairwiseOnDemand]: 467/480 looper letters, 62 selfloop transitions, 9 changer transitions 0/458 dead transitions. [2022-09-16 11:44:43,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 458 transitions, 1194 flow [2022-09-16 11:44:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1727 transitions. [2022-09-16 11:44:43,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8994791666666667 [2022-09-16 11:44:43,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1727 transitions. [2022-09-16 11:44:43,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1727 transitions. [2022-09-16 11:44:43,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:43,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1727 transitions. [2022-09-16 11:44:43,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.75) internal successors, (1727), 4 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:43,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:43,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:43,377 INFO L175 Difference]: Start difference. First operand has 428 places, 437 transitions, 1006 flow. Second operand 4 states and 1727 transitions. [2022-09-16 11:44:43,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 458 transitions, 1194 flow [2022-09-16 11:44:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 458 transitions, 1176 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:43,386 INFO L231 Difference]: Finished difference. Result has 426 places, 440 transitions, 1044 flow [2022-09-16 11:44:43,387 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1044, PETRI_PLACES=426, PETRI_TRANSITIONS=440} [2022-09-16 11:44:43,387 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 4 predicate places. [2022-09-16 11:44:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 440 transitions, 1044 flow [2022-09-16 11:44:43,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.25) internal successors, (1661), 4 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:43,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:43,388 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 11:44:43,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:44:43,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1071933412, now seen corresponding path program 1 times [2022-09-16 11:44:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:43,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591570527] [2022-09-16 11:44:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:43,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:43,426 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 11:44:43,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:43,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591570527] [2022-09-16 11:44:43,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591570527] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:43,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:43,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344406314] [2022-09-16 11:44:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:43,430 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:43,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 440 transitions, 1044 flow. Second operand has 4 states, 4 states have (on average 415.5) internal successors, (1662), 4 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:43,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:43,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:43,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:43,976 INFO L130 PetriNetUnfolder]: 310/1785 cut-off events. [2022-09-16 11:44:43,977 INFO L131 PetriNetUnfolder]: For 313/490 co-relation queries the response was YES. [2022-09-16 11:44:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 1785 events. 310/1785 cut-off events. For 313/490 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14255 event pairs, 96 based on Foata normal form. 10/1410 useless extension candidates. Maximal degree in co-relation 2426. Up to 231 conditions per place. [2022-09-16 11:44:44,062 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 63 selfloop transitions, 7 changer transitions 0/457 dead transitions. [2022-09-16 11:44:44,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 457 transitions, 1217 flow [2022-09-16 11:44:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-09-16 11:44:44,068 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8979166666666667 [2022-09-16 11:44:44,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-09-16 11:44:44,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-09-16 11:44:44,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:44,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-09-16 11:44:44,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:44,074 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:44,075 INFO L175 Difference]: Start difference. First operand has 426 places, 440 transitions, 1044 flow. Second operand 4 states and 1724 transitions. [2022-09-16 11:44:44,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 457 transitions, 1217 flow [2022-09-16 11:44:44,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 457 transitions, 1212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:44:44,083 INFO L231 Difference]: Finished difference. Result has 428 places, 438 transitions, 1041 flow [2022-09-16 11:44:44,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1041, PETRI_PLACES=428, PETRI_TRANSITIONS=438} [2022-09-16 11:44:44,085 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 6 predicate places. [2022-09-16 11:44:44,085 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 438 transitions, 1041 flow [2022-09-16 11:44:44,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.5) internal successors, (1662), 4 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:44,086 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 11:44:44,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:44:44,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1807927114, now seen corresponding path program 1 times [2022-09-16 11:44:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:44,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003478061] [2022-09-16 11:44:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:44,145 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 11:44:44,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:44,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003478061] [2022-09-16 11:44:44,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003478061] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:44,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:44,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499572951] [2022-09-16 11:44:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:44,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:44:44,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 438 transitions, 1041 flow. Second operand has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:44,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:44,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:44:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:45,386 INFO L130 PetriNetUnfolder]: 707/6011 cut-off events. [2022-09-16 11:44:45,386 INFO L131 PetriNetUnfolder]: For 263/743 co-relation queries the response was YES. [2022-09-16 11:44:45,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7940 conditions, 6011 events. 707/6011 cut-off events. For 263/743 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 60404 event pairs, 120 based on Foata normal form. 4/5176 useless extension candidates. Maximal degree in co-relation 6824. Up to 219 conditions per place. [2022-09-16 11:44:45,556 INFO L137 encePairwiseOnDemand]: 465/480 looper letters, 67 selfloop transitions, 16 changer transitions 0/462 dead transitions. [2022-09-16 11:44:45,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 462 transitions, 1276 flow [2022-09-16 11:44:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4515 transitions. [2022-09-16 11:44:45,566 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8551136363636364 [2022-09-16 11:44:45,566 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4515 transitions. [2022-09-16 11:44:45,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4515 transitions. [2022-09-16 11:44:45,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:45,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4515 transitions. [2022-09-16 11:44:45,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.45454545454544) internal successors, (4515), 11 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,582 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,582 INFO L175 Difference]: Start difference. First operand has 428 places, 438 transitions, 1041 flow. Second operand 11 states and 4515 transitions. [2022-09-16 11:44:45,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 462 transitions, 1276 flow [2022-09-16 11:44:45,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 462 transitions, 1265 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:45,593 INFO L231 Difference]: Finished difference. Result has 438 places, 439 transitions, 1075 flow [2022-09-16 11:44:45,594 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1075, PETRI_PLACES=438, PETRI_TRANSITIONS=439} [2022-09-16 11:44:45,594 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 16 predicate places. [2022-09-16 11:44:45,595 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 439 transitions, 1075 flow [2022-09-16 11:44:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:45,596 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 11:44:45,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:44:45,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1129801298, now seen corresponding path program 1 times [2022-09-16 11:44:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:45,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786937108] [2022-09-16 11:44:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:45,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:45,641 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 11:44:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786937108] [2022-09-16 11:44:45,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786937108] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:45,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:45,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107907539] [2022-09-16 11:44:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:45,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:45,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:45,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:45,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 439 transitions, 1075 flow. Second operand has 6 states, 6 states have (on average 415.3333333333333) internal successors, (2492), 6 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:45,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:45,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:45,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:46,377 INFO L130 PetriNetUnfolder]: 491/3316 cut-off events. [2022-09-16 11:44:46,377 INFO L131 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2022-09-16 11:44:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 3316 events. 491/3316 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28050 event pairs, 149 based on Foata normal form. 0/2789 useless extension candidates. Maximal degree in co-relation 4618. Up to 328 conditions per place. [2022-09-16 11:44:46,500 INFO L137 encePairwiseOnDemand]: 470/480 looper letters, 47 selfloop transitions, 10 changer transitions 0/447 dead transitions. [2022-09-16 11:44:46,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 447 transitions, 1220 flow [2022-09-16 11:44:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:44:46,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:44:46,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:44:46,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:44:46,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:46,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:44:46,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,517 INFO L175 Difference]: Start difference. First operand has 438 places, 439 transitions, 1075 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:44:46,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 447 transitions, 1220 flow [2022-09-16 11:44:46,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 447 transitions, 1190 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:46,527 INFO L231 Difference]: Finished difference. Result has 437 places, 438 transitions, 1069 flow [2022-09-16 11:44:46,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1069, PETRI_PLACES=437, PETRI_TRANSITIONS=438} [2022-09-16 11:44:46,528 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 15 predicate places. [2022-09-16 11:44:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 438 transitions, 1069 flow [2022-09-16 11:44:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 415.3333333333333) internal successors, (2492), 6 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:46,529 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] [2022-09-16 11:44:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:44:46,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash -211164499, now seen corresponding path program 1 times [2022-09-16 11:44:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:46,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850204951] [2022-09-16 11:44:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:46,588 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 11:44:46,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850204951] [2022-09-16 11:44:46,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850204951] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:46,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:46,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830294358] [2022-09-16 11:44:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:46,592 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:44:46,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 438 transitions, 1069 flow. Second operand has 8 states, 8 states have (on average 405.125) internal successors, (3241), 8 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:46,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:46,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:44:46,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:47,463 INFO L130 PetriNetUnfolder]: 532/3748 cut-off events. [2022-09-16 11:44:47,464 INFO L131 PetriNetUnfolder]: For 376/808 co-relation queries the response was YES. [2022-09-16 11:44:47,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 3748 events. 532/3748 cut-off events. For 376/808 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 32452 event pairs, 84 based on Foata normal form. 4/3288 useless extension candidates. Maximal degree in co-relation 4750. Up to 219 conditions per place. [2022-09-16 11:44:47,581 INFO L137 encePairwiseOnDemand]: 464/480 looper letters, 69 selfloop transitions, 17 changer transitions 0/464 dead transitions. [2022-09-16 11:44:47,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 464 transitions, 1335 flow [2022-09-16 11:44:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4517 transitions. [2022-09-16 11:44:47,590 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8554924242424242 [2022-09-16 11:44:47,590 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4517 transitions. [2022-09-16 11:44:47,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4517 transitions. [2022-09-16 11:44:47,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:47,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4517 transitions. [2022-09-16 11:44:47,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.6363636363636) internal successors, (4517), 11 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,606 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,606 INFO L175 Difference]: Start difference. First operand has 437 places, 438 transitions, 1069 flow. Second operand 11 states and 4517 transitions. [2022-09-16 11:44:47,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 464 transitions, 1335 flow [2022-09-16 11:44:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 464 transitions, 1301 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:47,617 INFO L231 Difference]: Finished difference. Result has 443 places, 439 transitions, 1096 flow [2022-09-16 11:44:47,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1096, PETRI_PLACES=443, PETRI_TRANSITIONS=439} [2022-09-16 11:44:47,618 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 21 predicate places. [2022-09-16 11:44:47,618 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 439 transitions, 1096 flow [2022-09-16 11:44:47,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.125) internal successors, (3241), 8 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:47,619 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 11:44:47,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:44:47,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:47,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1763048337, now seen corresponding path program 1 times [2022-09-16 11:44:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:47,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145243596] [2022-09-16 11:44:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:47,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:47,652 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 11:44:47,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145243596] [2022-09-16 11:44:47,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145243596] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:47,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:47,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164863785] [2022-09-16 11:44:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:47,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:47,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:47,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:47,655 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:47,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 439 transitions, 1096 flow. Second operand has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:47,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:47,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:47,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:48,282 INFO L130 PetriNetUnfolder]: 393/2170 cut-off events. [2022-09-16 11:44:48,283 INFO L131 PetriNetUnfolder]: For 324/552 co-relation queries the response was YES. [2022-09-16 11:44:48,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 2170 events. 393/2170 cut-off events. For 324/552 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 18387 event pairs, 85 based on Foata normal form. 10/1714 useless extension candidates. Maximal degree in co-relation 3034. Up to 356 conditions per place. [2022-09-16 11:44:48,433 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 59 selfloop transitions, 7 changer transitions 0/457 dead transitions. [2022-09-16 11:44:48,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 457 transitions, 1270 flow [2022-09-16 11:44:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1719 transitions. [2022-09-16 11:44:48,438 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8953125 [2022-09-16 11:44:48,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1719 transitions. [2022-09-16 11:44:48,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1719 transitions. [2022-09-16 11:44:48,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:48,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1719 transitions. [2022-09-16 11:44:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.75) internal successors, (1719), 4 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:48,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:48,444 INFO L175 Difference]: Start difference. First operand has 443 places, 439 transitions, 1096 flow. Second operand 4 states and 1719 transitions. [2022-09-16 11:44:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 457 transitions, 1270 flow [2022-09-16 11:44:48,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 457 transitions, 1240 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:48,454 INFO L231 Difference]: Finished difference. Result has 439 places, 440 transitions, 1096 flow [2022-09-16 11:44:48,454 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1096, PETRI_PLACES=439, PETRI_TRANSITIONS=440} [2022-09-16 11:44:48,455 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 17 predicate places. [2022-09-16 11:44:48,455 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 440 transitions, 1096 flow [2022-09-16 11:44:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:48,456 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 11:44:48,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:44:48,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1292635183, now seen corresponding path program 1 times [2022-09-16 11:44:48,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:48,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938689137] [2022-09-16 11:44:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:48,530 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 11:44:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938689137] [2022-09-16 11:44:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938689137] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37756137] [2022-09-16 11:44:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:48,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:44:48,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 440 transitions, 1096 flow. Second operand has 6 states, 6 states have (on average 396.3333333333333) internal successors, (2378), 6 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:48,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:48,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:44:48,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:49,010 INFO L130 PetriNetUnfolder]: 297/1560 cut-off events. [2022-09-16 11:44:49,011 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-09-16 11:44:49,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 1560 events. 297/1560 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11290 event pairs, 122 based on Foata normal form. 3/1399 useless extension candidates. Maximal degree in co-relation 2587. Up to 315 conditions per place. [2022-09-16 11:44:49,088 INFO L137 encePairwiseOnDemand]: 463/480 looper letters, 74 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2022-09-16 11:44:49,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 460 transitions, 1332 flow [2022-09-16 11:44:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2841 transitions. [2022-09-16 11:44:49,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455357142857143 [2022-09-16 11:44:49,094 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2841 transitions. [2022-09-16 11:44:49,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2841 transitions. [2022-09-16 11:44:49,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2841 transitions. [2022-09-16 11:44:49,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 405.85714285714283) internal successors, (2841), 7 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,102 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,102 INFO L175 Difference]: Start difference. First operand has 439 places, 440 transitions, 1096 flow. Second operand 7 states and 2841 transitions. [2022-09-16 11:44:49,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 460 transitions, 1332 flow [2022-09-16 11:44:49,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 460 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:49,111 INFO L231 Difference]: Finished difference. Result has 447 places, 448 transitions, 1187 flow [2022-09-16 11:44:49,112 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1187, PETRI_PLACES=447, PETRI_TRANSITIONS=448} [2022-09-16 11:44:49,112 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 25 predicate places. [2022-09-16 11:44:49,112 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 448 transitions, 1187 flow [2022-09-16 11:44:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.3333333333333) internal successors, (2378), 6 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:49,113 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] [2022-09-16 11:44:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:44:49,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash -689953605, now seen corresponding path program 1 times [2022-09-16 11:44:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:49,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227429149] [2022-09-16 11:44:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:49,165 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 11:44:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227429149] [2022-09-16 11:44:49,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227429149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:49,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:49,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567721422] [2022-09-16 11:44:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:49,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:49,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:49,170 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:44:49,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 448 transitions, 1187 flow. Second operand has 6 states, 6 states have (on average 396.5) internal successors, (2379), 6 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:49,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:44:49,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:49,797 INFO L130 PetriNetUnfolder]: 281/1538 cut-off events. [2022-09-16 11:44:49,797 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-09-16 11:44:49,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 1538 events. 281/1538 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11029 event pairs, 102 based on Foata normal form. 3/1416 useless extension candidates. Maximal degree in co-relation 2685. Up to 265 conditions per place. [2022-09-16 11:44:49,930 INFO L137 encePairwiseOnDemand]: 462/480 looper letters, 94 selfloop transitions, 20 changer transitions 0/483 dead transitions. [2022-09-16 11:44:49,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 483 transitions, 1544 flow [2022-09-16 11:44:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2855 transitions. [2022-09-16 11:44:49,936 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8497023809523809 [2022-09-16 11:44:49,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2855 transitions. [2022-09-16 11:44:49,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2855 transitions. [2022-09-16 11:44:49,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:49,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2855 transitions. [2022-09-16 11:44:49,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 407.85714285714283) internal successors, (2855), 7 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,943 INFO L175 Difference]: Start difference. First operand has 447 places, 448 transitions, 1187 flow. Second operand 7 states and 2855 transitions. [2022-09-16 11:44:49,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 483 transitions, 1544 flow [2022-09-16 11:44:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 483 transitions, 1532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:49,954 INFO L231 Difference]: Finished difference. Result has 455 places, 459 transitions, 1313 flow [2022-09-16 11:44:49,955 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1313, PETRI_PLACES=455, PETRI_TRANSITIONS=459} [2022-09-16 11:44:49,955 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 33 predicate places. [2022-09-16 11:44:49,955 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 459 transitions, 1313 flow [2022-09-16 11:44:49,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.5) internal successors, (2379), 6 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:49,956 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 11:44:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:44:49,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash 693410502, now seen corresponding path program 1 times [2022-09-16 11:44:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:49,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28505681] [2022-09-16 11:44:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:49,989 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 11:44:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28505681] [2022-09-16 11:44:49,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28505681] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:49,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:49,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560835902] [2022-09-16 11:44:49,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:49,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:49,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:49,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:49,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 459 transitions, 1313 flow. Second operand has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:49,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:49,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:49,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:50,885 INFO L130 PetriNetUnfolder]: 819/3693 cut-off events. [2022-09-16 11:44:50,885 INFO L131 PetriNetUnfolder]: For 1170/1176 co-relation queries the response was YES. [2022-09-16 11:44:50,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5692 conditions, 3693 events. 819/3693 cut-off events. For 1170/1176 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 40093 event pairs, 255 based on Foata normal form. 26/2834 useless extension candidates. Maximal degree in co-relation 5590. Up to 629 conditions per place. [2022-09-16 11:44:50,992 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 62 selfloop transitions, 7 changer transitions 0/475 dead transitions. [2022-09-16 11:44:50,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 475 transitions, 1479 flow [2022-09-16 11:44:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2022-09-16 11:44:50,995 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8973958333333333 [2022-09-16 11:44:50,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2022-09-16 11:44:50,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2022-09-16 11:44:50,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:50,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2022-09-16 11:44:50,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:51,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:51,000 INFO L175 Difference]: Start difference. First operand has 455 places, 459 transitions, 1313 flow. Second operand 4 states and 1723 transitions. [2022-09-16 11:44:51,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 475 transitions, 1479 flow [2022-09-16 11:44:51,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 475 transitions, 1466 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:51,011 INFO L231 Difference]: Finished difference. Result has 456 places, 457 transitions, 1302 flow [2022-09-16 11:44:51,011 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1302, PETRI_PLACES=456, PETRI_TRANSITIONS=457} [2022-09-16 11:44:51,012 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 34 predicate places. [2022-09-16 11:44:51,012 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 457 transitions, 1302 flow [2022-09-16 11:44:51,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.75) internal successors, (1663), 4 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:51,013 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 11:44:51,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:44:51,013 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1365481203, now seen corresponding path program 1 times [2022-09-16 11:44:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:51,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328522674] [2022-09-16 11:44:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:51,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:51,068 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 11:44:51,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328522674] [2022-09-16 11:44:51,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328522674] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:51,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:51,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119151844] [2022-09-16 11:44:51,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:51,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:51,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:51,071 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:44:51,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 457 transitions, 1302 flow. Second operand has 8 states, 8 states have (on average 405.125) internal successors, (3241), 8 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:51,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:51,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:44:51,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:52,327 INFO L130 PetriNetUnfolder]: 771/4752 cut-off events. [2022-09-16 11:44:52,327 INFO L131 PetriNetUnfolder]: For 887/1238 co-relation queries the response was YES. [2022-09-16 11:44:52,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 4752 events. 771/4752 cut-off events. For 887/1238 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 43534 event pairs, 77 based on Foata normal form. 6/4081 useless extension candidates. Maximal degree in co-relation 6551. Up to 308 conditions per place. [2022-09-16 11:44:52,551 INFO L137 encePairwiseOnDemand]: 465/480 looper letters, 67 selfloop transitions, 16 changer transitions 0/481 dead transitions. [2022-09-16 11:44:52,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 481 transitions, 1537 flow [2022-09-16 11:44:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4515 transitions. [2022-09-16 11:44:52,556 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8551136363636364 [2022-09-16 11:44:52,556 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4515 transitions. [2022-09-16 11:44:52,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4515 transitions. [2022-09-16 11:44:52,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:52,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4515 transitions. [2022-09-16 11:44:52,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.45454545454544) internal successors, (4515), 11 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,569 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,569 INFO L175 Difference]: Start difference. First operand has 456 places, 457 transitions, 1302 flow. Second operand 11 states and 4515 transitions. [2022-09-16 11:44:52,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 481 transitions, 1537 flow [2022-09-16 11:44:52,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 481 transitions, 1526 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:52,584 INFO L231 Difference]: Finished difference. Result has 466 places, 458 transitions, 1336 flow [2022-09-16 11:44:52,584 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1336, PETRI_PLACES=466, PETRI_TRANSITIONS=458} [2022-09-16 11:44:52,585 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 44 predicate places. [2022-09-16 11:44:52,585 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 458 transitions, 1336 flow [2022-09-16 11:44:52,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.125) internal successors, (3241), 8 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:52,585 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 11:44:52,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:44:52,586 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 20890503, now seen corresponding path program 1 times [2022-09-16 11:44:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:52,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458246457] [2022-09-16 11:44:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:52,632 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 11:44:52,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:52,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458246457] [2022-09-16 11:44:52,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458246457] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:52,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:52,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767386070] [2022-09-16 11:44:52,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:52,636 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:52,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 458 transitions, 1336 flow. Second operand has 6 states, 6 states have (on average 415.5) internal successors, (2493), 6 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:52,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:52,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:52,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:53,851 INFO L130 PetriNetUnfolder]: 957/5327 cut-off events. [2022-09-16 11:44:53,852 INFO L131 PetriNetUnfolder]: For 945/1638 co-relation queries the response was YES. [2022-09-16 11:44:53,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7668 conditions, 5327 events. 957/5327 cut-off events. For 945/1638 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59881 event pairs, 321 based on Foata normal form. 3/4190 useless extension candidates. Maximal degree in co-relation 5982. Up to 716 conditions per place. [2022-09-16 11:44:54,032 INFO L137 encePairwiseOnDemand]: 470/480 looper letters, 47 selfloop transitions, 10 changer transitions 0/466 dead transitions. [2022-09-16 11:44:54,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 466 transitions, 1472 flow [2022-09-16 11:44:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:44:54,035 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:44:54,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:44:54,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:44:54,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:54,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:44:54,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,042 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,042 INFO L175 Difference]: Start difference. First operand has 466 places, 458 transitions, 1336 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:44:54,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 466 transitions, 1472 flow [2022-09-16 11:44:54,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 466 transitions, 1448 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:54,054 INFO L231 Difference]: Finished difference. Result has 465 places, 457 transitions, 1330 flow [2022-09-16 11:44:54,055 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1330, PETRI_PLACES=465, PETRI_TRANSITIONS=457} [2022-09-16 11:44:54,055 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 43 predicate places. [2022-09-16 11:44:54,055 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 457 transitions, 1330 flow [2022-09-16 11:44:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 415.5) internal successors, (2493), 6 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:54,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:44:54,056 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash -619754357, now seen corresponding path program 1 times [2022-09-16 11:44:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:54,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388649193] [2022-09-16 11:44:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:54,126 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 11:44:54,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:54,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388649193] [2022-09-16 11:44:54,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388649193] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:54,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:54,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281659084] [2022-09-16 11:44:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:54,130 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:44:54,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 457 transitions, 1330 flow. Second operand has 8 states, 8 states have (on average 405.25) internal successors, (3242), 8 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:54,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:54,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:44:54,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:55,224 INFO L130 PetriNetUnfolder]: 679/4255 cut-off events. [2022-09-16 11:44:55,224 INFO L131 PetriNetUnfolder]: For 884/986 co-relation queries the response was YES. [2022-09-16 11:44:55,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 4255 events. 679/4255 cut-off events. For 884/986 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 37659 event pairs, 47 based on Foata normal form. 3/3700 useless extension candidates. Maximal degree in co-relation 6317. Up to 308 conditions per place. [2022-09-16 11:44:55,383 INFO L137 encePairwiseOnDemand]: 464/480 looper letters, 69 selfloop transitions, 17 changer transitions 0/483 dead transitions. [2022-09-16 11:44:55,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 483 transitions, 1582 flow [2022-09-16 11:44:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:44:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:44:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4517 transitions. [2022-09-16 11:44:55,386 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8554924242424242 [2022-09-16 11:44:55,386 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4517 transitions. [2022-09-16 11:44:55,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4517 transitions. [2022-09-16 11:44:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:55,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4517 transitions. [2022-09-16 11:44:55,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.6363636363636) internal successors, (4517), 11 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,396 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,396 INFO L175 Difference]: Start difference. First operand has 465 places, 457 transitions, 1330 flow. Second operand 11 states and 4517 transitions. [2022-09-16 11:44:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 483 transitions, 1582 flow [2022-09-16 11:44:55,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 483 transitions, 1562 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:44:55,409 INFO L231 Difference]: Finished difference. Result has 471 places, 458 transitions, 1357 flow [2022-09-16 11:44:55,409 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1357, PETRI_PLACES=471, PETRI_TRANSITIONS=458} [2022-09-16 11:44:55,410 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 49 predicate places. [2022-09-16 11:44:55,410 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 458 transitions, 1357 flow [2022-09-16 11:44:55,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.25) internal successors, (3242), 8 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:55,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:55,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:44:55,411 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -523689334, now seen corresponding path program 1 times [2022-09-16 11:44:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:55,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257521772] [2022-09-16 11:44:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:55,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:55,438 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 11:44:55,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:55,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257521772] [2022-09-16 11:44:55,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257521772] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:55,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:55,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:44:55,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596249414] [2022-09-16 11:44:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:55,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:44:55,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:44:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:44:55,441 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:44:55,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 458 transitions, 1357 flow. Second operand has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:55,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:55,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:44:55,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:56,490 INFO L130 PetriNetUnfolder]: 1098/4864 cut-off events. [2022-09-16 11:44:56,491 INFO L131 PetriNetUnfolder]: For 1160/1166 co-relation queries the response was YES. [2022-09-16 11:44:56,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7294 conditions, 4864 events. 1098/4864 cut-off events. For 1160/1166 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 57017 event pairs, 444 based on Foata normal form. 26/3672 useless extension candidates. Maximal degree in co-relation 7185. Up to 967 conditions per place. [2022-09-16 11:44:56,577 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 58 selfloop transitions, 7 changer transitions 0/475 dead transitions. [2022-09-16 11:44:56,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 475 transitions, 1524 flow [2022-09-16 11:44:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:44:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:44:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1718 transitions. [2022-09-16 11:44:56,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8947916666666667 [2022-09-16 11:44:56,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1718 transitions. [2022-09-16 11:44:56,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1718 transitions. [2022-09-16 11:44:56,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:56,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1718 transitions. [2022-09-16 11:44:56,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.5) internal successors, (1718), 4 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:56,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 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 11:44:56,583 INFO L175 Difference]: Start difference. First operand has 471 places, 458 transitions, 1357 flow. Second operand 4 states and 1718 transitions. [2022-09-16 11:44:56,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 475 transitions, 1524 flow [2022-09-16 11:44:56,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 475 transitions, 1494 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:44:56,594 INFO L231 Difference]: Finished difference. Result has 467 places, 459 transitions, 1357 flow [2022-09-16 11:44:56,595 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1357, PETRI_PLACES=467, PETRI_TRANSITIONS=459} [2022-09-16 11:44:56,595 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 45 predicate places. [2022-09-16 11:44:56,595 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 459 transitions, 1357 flow [2022-09-16 11:44:56,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:56,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:56,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:44:56,596 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:56,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:56,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1189506447, now seen corresponding path program 1 times [2022-09-16 11:44:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:56,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881541147] [2022-09-16 11:44:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:56,646 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 11:44:56,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:56,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881541147] [2022-09-16 11:44:56,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881541147] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:56,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:56,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:56,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377762779] [2022-09-16 11:44:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:56,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:44:56,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 459 transitions, 1357 flow. Second operand has 6 states, 6 states have (on average 396.5) internal successors, (2379), 6 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:56,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:56,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:44:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:57,529 INFO L130 PetriNetUnfolder]: 554/2426 cut-off events. [2022-09-16 11:44:57,529 INFO L131 PetriNetUnfolder]: For 658/1006 co-relation queries the response was YES. [2022-09-16 11:44:57,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 2426 events. 554/2426 cut-off events. For 658/1006 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 22303 event pairs, 202 based on Foata normal form. 5/1913 useless extension candidates. Maximal degree in co-relation 4055. Up to 566 conditions per place. [2022-09-16 11:44:57,709 INFO L137 encePairwiseOnDemand]: 463/480 looper letters, 74 selfloop transitions, 17 changer transitions 0/479 dead transitions. [2022-09-16 11:44:57,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 479 transitions, 1593 flow [2022-09-16 11:44:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2841 transitions. [2022-09-16 11:44:57,711 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455357142857143 [2022-09-16 11:44:57,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2841 transitions. [2022-09-16 11:44:57,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2841 transitions. [2022-09-16 11:44:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:57,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2841 transitions. [2022-09-16 11:44:57,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 405.85714285714283) internal successors, (2841), 7 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,718 INFO L175 Difference]: Start difference. First operand has 467 places, 459 transitions, 1357 flow. Second operand 7 states and 2841 transitions. [2022-09-16 11:44:57,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 479 transitions, 1593 flow [2022-09-16 11:44:57,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 479 transitions, 1585 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:57,729 INFO L231 Difference]: Finished difference. Result has 475 places, 467 transitions, 1448 flow [2022-09-16 11:44:57,730 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1448, PETRI_PLACES=475, PETRI_TRANSITIONS=467} [2022-09-16 11:44:57,730 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 53 predicate places. [2022-09-16 11:44:57,730 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 467 transitions, 1448 flow [2022-09-16 11:44:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.5) internal successors, (2379), 6 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:57,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:44:57,731 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1052974280, now seen corresponding path program 1 times [2022-09-16 11:44:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:57,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819990155] [2022-09-16 11:44:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:57,788 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 11:44:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819990155] [2022-09-16 11:44:57,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819990155] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:57,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:57,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:44:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490315717] [2022-09-16 11:44:57,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:44:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:44:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:44:57,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:44:57,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 467 transitions, 1448 flow. Second operand has 6 states, 6 states have (on average 396.6666666666667) internal successors, (2380), 6 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:57,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:57,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:44:57,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:58,721 INFO L130 PetriNetUnfolder]: 522/2339 cut-off events. [2022-09-16 11:44:58,722 INFO L131 PetriNetUnfolder]: For 928/1252 co-relation queries the response was YES. [2022-09-16 11:44:58,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 2339 events. 522/2339 cut-off events. For 928/1252 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 21330 event pairs, 213 based on Foata normal form. 5/1914 useless extension candidates. Maximal degree in co-relation 4193. Up to 476 conditions per place. [2022-09-16 11:44:58,886 INFO L137 encePairwiseOnDemand]: 462/480 looper letters, 94 selfloop transitions, 20 changer transitions 0/502 dead transitions. [2022-09-16 11:44:58,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 502 transitions, 1805 flow [2022-09-16 11:44:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:44:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:44:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2855 transitions. [2022-09-16 11:44:58,889 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8497023809523809 [2022-09-16 11:44:58,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2855 transitions. [2022-09-16 11:44:58,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2855 transitions. [2022-09-16 11:44:58,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:44:58,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2855 transitions. [2022-09-16 11:44:58,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 407.85714285714283) internal successors, (2855), 7 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,895 INFO L175 Difference]: Start difference. First operand has 475 places, 467 transitions, 1448 flow. Second operand 7 states and 2855 transitions. [2022-09-16 11:44:58,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 502 transitions, 1805 flow [2022-09-16 11:44:58,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 502 transitions, 1793 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:44:58,909 INFO L231 Difference]: Finished difference. Result has 483 places, 478 transitions, 1574 flow [2022-09-16 11:44:58,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1574, PETRI_PLACES=483, PETRI_TRANSITIONS=478} [2022-09-16 11:44:58,910 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 61 predicate places. [2022-09-16 11:44:58,910 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 478 transitions, 1574 flow [2022-09-16 11:44:58,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.6666666666667) internal successors, (2380), 6 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:44:58,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:44:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:44:58,911 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:44:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:44:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash -587046868, now seen corresponding path program 1 times [2022-09-16 11:44:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:44:58,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298072032] [2022-09-16 11:44:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:44:58,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:44:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:44:58,964 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 11:44:58,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:44:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298072032] [2022-09-16 11:44:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298072032] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:44:58,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:44:58,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:44:58,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983935204] [2022-09-16 11:44:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:44:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:44:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:44:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:44:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:44:58,967 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:44:58,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 478 transitions, 1574 flow. Second operand has 8 states, 8 states have (on average 405.25) internal successors, (3242), 8 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:44:58,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:44:58,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:44:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:00,698 INFO L130 PetriNetUnfolder]: 1484/6907 cut-off events. [2022-09-16 11:45:00,698 INFO L131 PetriNetUnfolder]: For 1862/1904 co-relation queries the response was YES. [2022-09-16 11:45:00,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11029 conditions, 6907 events. 1484/6907 cut-off events. For 1862/1904 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 84321 event pairs, 249 based on Foata normal form. 0/5445 useless extension candidates. Maximal degree in co-relation 9211. Up to 711 conditions per place. [2022-09-16 11:45:00,926 INFO L137 encePairwiseOnDemand]: 465/480 looper letters, 67 selfloop transitions, 16 changer transitions 0/502 dead transitions. [2022-09-16 11:45:00,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 502 transitions, 1802 flow [2022-09-16 11:45:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4515 transitions. [2022-09-16 11:45:00,929 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8551136363636364 [2022-09-16 11:45:00,929 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4515 transitions. [2022-09-16 11:45:00,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4515 transitions. [2022-09-16 11:45:00,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:00,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4515 transitions. [2022-09-16 11:45:00,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.45454545454544) internal successors, (4515), 11 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,938 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,938 INFO L175 Difference]: Start difference. First operand has 483 places, 478 transitions, 1574 flow. Second operand 11 states and 4515 transitions. [2022-09-16 11:45:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 502 transitions, 1802 flow [2022-09-16 11:45:00,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 502 transitions, 1794 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:00,955 INFO L231 Difference]: Finished difference. Result has 494 places, 479 transitions, 1611 flow [2022-09-16 11:45:00,956 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1611, PETRI_PLACES=494, PETRI_TRANSITIONS=479} [2022-09-16 11:45:00,956 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 72 predicate places. [2022-09-16 11:45:00,956 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 479 transitions, 1611 flow [2022-09-16 11:45:00,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.25) internal successors, (3242), 8 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:00,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:00,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:00,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:45:00,957 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1018582291, now seen corresponding path program 1 times [2022-09-16 11:45:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:00,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828057788] [2022-09-16 11:45:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:01,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828057788] [2022-09-16 11:45:01,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828057788] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:01,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:01,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545185356] [2022-09-16 11:45:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:01,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:01,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:01,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 479 transitions, 1611 flow. Second operand has 8 states, 8 states have (on average 405.375) internal successors, (3243), 8 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:01,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:01,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:01,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:02,905 INFO L130 PetriNetUnfolder]: 1320/6530 cut-off events. [2022-09-16 11:45:02,905 INFO L131 PetriNetUnfolder]: For 2043/3047 co-relation queries the response was YES. [2022-09-16 11:45:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 6530 events. 1320/6530 cut-off events. For 2043/3047 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 77743 event pairs, 306 based on Foata normal form. 9/5267 useless extension candidates. Maximal degree in co-relation 8454. Up to 685 conditions per place. [2022-09-16 11:45:03,139 INFO L137 encePairwiseOnDemand]: 464/480 looper letters, 69 selfloop transitions, 17 changer transitions 0/505 dead transitions. [2022-09-16 11:45:03,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 505 transitions, 1856 flow [2022-09-16 11:45:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4517 transitions. [2022-09-16 11:45:03,142 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8554924242424242 [2022-09-16 11:45:03,142 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4517 transitions. [2022-09-16 11:45:03,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4517 transitions. [2022-09-16 11:45:03,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:03,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4517 transitions. [2022-09-16 11:45:03,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.6363636363636) internal successors, (4517), 11 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:03,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:03,151 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:03,151 INFO L175 Difference]: Start difference. First operand has 494 places, 479 transitions, 1611 flow. Second operand 11 states and 4517 transitions. [2022-09-16 11:45:03,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 505 transitions, 1856 flow [2022-09-16 11:45:03,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 505 transitions, 1832 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:45:03,170 INFO L231 Difference]: Finished difference. Result has 500 places, 480 transitions, 1634 flow [2022-09-16 11:45:03,170 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1634, PETRI_PLACES=500, PETRI_TRANSITIONS=480} [2022-09-16 11:45:03,171 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 78 predicate places. [2022-09-16 11:45:03,171 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 480 transitions, 1634 flow [2022-09-16 11:45:03,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 405.375) internal successors, (3243), 8 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:03,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:03,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:03,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:45:03,172 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash 167955153, now seen corresponding path program 1 times [2022-09-16 11:45:03,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:03,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45397799] [2022-09-16 11:45:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45397799] [2022-09-16 11:45:03,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45397799] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:03,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:03,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:03,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238911601] [2022-09-16 11:45:03,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:03,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:03,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:03,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:45:03,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 480 transitions, 1634 flow. Second operand has 6 states, 6 states have (on average 396.6666666666667) internal successors, (2380), 6 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:03,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:03,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:45:03,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:04,600 INFO L130 PetriNetUnfolder]: 1578/6066 cut-off events. [2022-09-16 11:45:04,600 INFO L131 PetriNetUnfolder]: For 2345/2351 co-relation queries the response was YES. [2022-09-16 11:45:04,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 6066 events. 1578/6066 cut-off events. For 2345/2351 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 73632 event pairs, 759 based on Foata normal form. 26/4714 useless extension candidates. Maximal degree in co-relation 10197. Up to 1567 conditions per place. [2022-09-16 11:45:04,779 INFO L137 encePairwiseOnDemand]: 463/480 looper letters, 73 selfloop transitions, 17 changer transitions 1/500 dead transitions. [2022-09-16 11:45:04,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 500 transitions, 1865 flow [2022-09-16 11:45:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2841 transitions. [2022-09-16 11:45:04,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455357142857143 [2022-09-16 11:45:04,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2841 transitions. [2022-09-16 11:45:04,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2841 transitions. [2022-09-16 11:45:04,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:04,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2841 transitions. [2022-09-16 11:45:04,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 405.85714285714283) internal successors, (2841), 7 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:04,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:04,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:04,787 INFO L175 Difference]: Start difference. First operand has 500 places, 480 transitions, 1634 flow. Second operand 7 states and 2841 transitions. [2022-09-16 11:45:04,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 500 transitions, 1865 flow [2022-09-16 11:45:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 500 transitions, 1837 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:45:04,803 INFO L231 Difference]: Finished difference. Result has 503 places, 488 transitions, 1705 flow [2022-09-16 11:45:04,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1705, PETRI_PLACES=503, PETRI_TRANSITIONS=488} [2022-09-16 11:45:04,804 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 81 predicate places. [2022-09-16 11:45:04,804 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 488 transitions, 1705 flow [2022-09-16 11:45:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.6666666666667) internal successors, (2380), 6 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:04,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:04,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:45:04,805 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -242647072, now seen corresponding path program 1 times [2022-09-16 11:45:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:04,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900503595] [2022-09-16 11:45:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:04,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900503595] [2022-09-16 11:45:04,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900503595] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:04,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:04,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767464028] [2022-09-16 11:45:04,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:04,844 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:04,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 488 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 416.1666666666667) internal successors, (2497), 6 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:04,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:04,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:05,444 INFO L130 PetriNetUnfolder]: 243/1817 cut-off events. [2022-09-16 11:45:05,444 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2022-09-16 11:45:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 1817 events. 243/1817 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 13079 event pairs, 45 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 3098. Up to 211 conditions per place. [2022-09-16 11:45:05,546 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 53 selfloop transitions, 8 changer transitions 0/499 dead transitions. [2022-09-16 11:45:05,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 499 transitions, 1863 flow [2022-09-16 11:45:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:45:05,549 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:45:05,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:45:05,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:45:05,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:05,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:45:05,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,555 INFO L175 Difference]: Start difference. First operand has 503 places, 488 transitions, 1705 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:45:05,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 499 transitions, 1863 flow [2022-09-16 11:45:05,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 499 transitions, 1856 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:05,568 INFO L231 Difference]: Finished difference. Result has 507 places, 488 transitions, 1714 flow [2022-09-16 11:45:05,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1714, PETRI_PLACES=507, PETRI_TRANSITIONS=488} [2022-09-16 11:45:05,569 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 85 predicate places. [2022-09-16 11:45:05,570 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 488 transitions, 1714 flow [2022-09-16 11:45:05,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.1666666666667) internal successors, (2497), 6 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:05,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:05,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:45:05,570 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1638674097, now seen corresponding path program 1 times [2022-09-16 11:45:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:05,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255594905] [2022-09-16 11:45:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:05,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255594905] [2022-09-16 11:45:05,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255594905] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:05,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:05,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304522494] [2022-09-16 11:45:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:05,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 480 [2022-09-16 11:45:05,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 488 transitions, 1714 flow. Second operand has 6 states, 6 states have (on average 396.8333333333333) internal successors, (2381), 6 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:05,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:05,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 480 [2022-09-16 11:45:05,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:07,072 INFO L130 PetriNetUnfolder]: 1482/5631 cut-off events. [2022-09-16 11:45:07,072 INFO L131 PetriNetUnfolder]: For 2707/2722 co-relation queries the response was YES. [2022-09-16 11:45:07,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10314 conditions, 5631 events. 1482/5631 cut-off events. For 2707/2722 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 68581 event pairs, 585 based on Foata normal form. 22/4466 useless extension candidates. Maximal degree in co-relation 10187. Up to 1317 conditions per place. [2022-09-16 11:45:07,196 INFO L137 encePairwiseOnDemand]: 462/480 looper letters, 93 selfloop transitions, 20 changer transitions 1/523 dead transitions. [2022-09-16 11:45:07,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 523 transitions, 2064 flow [2022-09-16 11:45:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2855 transitions. [2022-09-16 11:45:07,200 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8497023809523809 [2022-09-16 11:45:07,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2855 transitions. [2022-09-16 11:45:07,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2855 transitions. [2022-09-16 11:45:07,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:07,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2855 transitions. [2022-09-16 11:45:07,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 407.85714285714283) internal successors, (2855), 7 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:07,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:07,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:07,206 INFO L175 Difference]: Start difference. First operand has 507 places, 488 transitions, 1714 flow. Second operand 7 states and 2855 transitions. [2022-09-16 11:45:07,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 523 transitions, 2064 flow [2022-09-16 11:45:07,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 523 transitions, 2055 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:07,224 INFO L231 Difference]: Finished difference. Result has 513 places, 499 transitions, 1841 flow [2022-09-16 11:45:07,224 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1841, PETRI_PLACES=513, PETRI_TRANSITIONS=499} [2022-09-16 11:45:07,225 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 91 predicate places. [2022-09-16 11:45:07,225 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 499 transitions, 1841 flow [2022-09-16 11:45:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 396.8333333333333) internal successors, (2381), 6 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:07,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:07,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:07,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-16 11:45:07,226 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash -338911459, now seen corresponding path program 1 times [2022-09-16 11:45:07,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:07,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093055084] [2022-09-16 11:45:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:07,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093055084] [2022-09-16 11:45:07,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093055084] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:07,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:07,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284020274] [2022-09-16 11:45:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:07,270 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:07,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 499 transitions, 1841 flow. Second operand has 6 states, 6 states have (on average 416.3333333333333) internal successors, (2498), 6 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:07,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:07,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:07,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:10,909 INFO L130 PetriNetUnfolder]: 2465/16532 cut-off events. [2022-09-16 11:45:10,909 INFO L131 PetriNetUnfolder]: For 6994/7147 co-relation queries the response was YES. [2022-09-16 11:45:11,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28367 conditions, 16532 events. 2465/16532 cut-off events. For 6994/7147 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 221545 event pairs, 525 based on Foata normal form. 0/14438 useless extension candidates. Maximal degree in co-relation 28075. Up to 1113 conditions per place. [2022-09-16 11:45:11,171 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 53 selfloop transitions, 8 changer transitions 0/510 dead transitions. [2022-09-16 11:45:11,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 510 transitions, 1999 flow [2022-09-16 11:45:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:45:11,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:45:11,175 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:45:11,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:45:11,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:11,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:45:11,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:11,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:11,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:11,181 INFO L175 Difference]: Start difference. First operand has 513 places, 499 transitions, 1841 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:45:11,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 510 transitions, 1999 flow [2022-09-16 11:45:11,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 510 transitions, 1991 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:11,255 INFO L231 Difference]: Finished difference. Result has 517 places, 499 transitions, 1849 flow [2022-09-16 11:45:11,256 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1849, PETRI_PLACES=517, PETRI_TRANSITIONS=499} [2022-09-16 11:45:11,256 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 95 predicate places. [2022-09-16 11:45:11,256 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 499 transitions, 1849 flow [2022-09-16 11:45:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.3333333333333) internal successors, (2498), 6 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:11,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:11,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-16 11:45:11,257 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1515501162, now seen corresponding path program 1 times [2022-09-16 11:45:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401482835] [2022-09-16 11:45:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401482835] [2022-09-16 11:45:11,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401482835] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:11,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:11,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654541379] [2022-09-16 11:45:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:11,299 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:11,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 499 transitions, 1849 flow. Second operand has 6 states, 6 states have (on average 416.5) internal successors, (2499), 6 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:11,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:11,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:12,072 INFO L130 PetriNetUnfolder]: 240/1807 cut-off events. [2022-09-16 11:45:12,072 INFO L131 PetriNetUnfolder]: For 757/757 co-relation queries the response was YES. [2022-09-16 11:45:12,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 1807 events. 240/1807 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12978 event pairs, 63 based on Foata normal form. 0/1716 useless extension candidates. Maximal degree in co-relation 3116. Up to 197 conditions per place. [2022-09-16 11:45:12,141 INFO L137 encePairwiseOnDemand]: 474/480 looper letters, 49 selfloop transitions, 6 changer transitions 0/504 dead transitions. [2022-09-16 11:45:12,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 504 transitions, 1975 flow [2022-09-16 11:45:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2526 transitions. [2022-09-16 11:45:12,143 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770833333333333 [2022-09-16 11:45:12,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2526 transitions. [2022-09-16 11:45:12,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2526 transitions. [2022-09-16 11:45:12,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:12,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2526 transitions. [2022-09-16 11:45:12,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 421.0) internal successors, (2526), 6 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:12,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:12,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:12,149 INFO L175 Difference]: Start difference. First operand has 517 places, 499 transitions, 1849 flow. Second operand 6 states and 2526 transitions. [2022-09-16 11:45:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 504 transitions, 1975 flow [2022-09-16 11:45:12,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 504 transitions, 1969 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:45:12,162 INFO L231 Difference]: Finished difference. Result has 518 places, 498 transitions, 1853 flow [2022-09-16 11:45:12,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1853, PETRI_PLACES=518, PETRI_TRANSITIONS=498} [2022-09-16 11:45:12,163 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 96 predicate places. [2022-09-16 11:45:12,163 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 498 transitions, 1853 flow [2022-09-16 11:45:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.5) internal successors, (2499), 6 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:12,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:12,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:12,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-16 11:45:12,164 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2119519914, now seen corresponding path program 1 times [2022-09-16 11:45:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:12,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079392392] [2022-09-16 11:45:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:12,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079392392] [2022-09-16 11:45:12,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079392392] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:12,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:12,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417562251] [2022-09-16 11:45:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:12,207 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:12,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 498 transitions, 1853 flow. Second operand has 6 states, 6 states have (on average 416.5) internal successors, (2499), 6 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:12,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:12,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:12,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:14,542 INFO L130 PetriNetUnfolder]: 2007/8559 cut-off events. [2022-09-16 11:45:14,542 INFO L131 PetriNetUnfolder]: For 4998/6461 co-relation queries the response was YES. [2022-09-16 11:45:14,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16474 conditions, 8559 events. 2007/8559 cut-off events. For 4998/6461 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 99379 event pairs, 507 based on Foata normal form. 5/7205 useless extension candidates. Maximal degree in co-relation 16174. Up to 1450 conditions per place. [2022-09-16 11:45:14,731 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 57 selfloop transitions, 8 changer transitions 0/512 dead transitions. [2022-09-16 11:45:14,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 512 transitions, 2031 flow [2022-09-16 11:45:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2948 transitions. [2022-09-16 11:45:14,733 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8773809523809524 [2022-09-16 11:45:14,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2948 transitions. [2022-09-16 11:45:14,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2948 transitions. [2022-09-16 11:45:14,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:14,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2948 transitions. [2022-09-16 11:45:14,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 421.14285714285717) internal successors, (2948), 7 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,737 INFO L175 Difference]: Start difference. First operand has 518 places, 498 transitions, 1853 flow. Second operand 7 states and 2948 transitions. [2022-09-16 11:45:14,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 512 transitions, 2031 flow [2022-09-16 11:45:14,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 512 transitions, 2020 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:14,763 INFO L231 Difference]: Finished difference. Result has 519 places, 498 transitions, 1858 flow [2022-09-16 11:45:14,764 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1858, PETRI_PLACES=519, PETRI_TRANSITIONS=498} [2022-09-16 11:45:14,764 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 97 predicate places. [2022-09-16 11:45:14,764 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 498 transitions, 1858 flow [2022-09-16 11:45:14,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.5) internal successors, (2499), 6 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:14,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:14,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-16 11:45:14,765 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2065337521, now seen corresponding path program 1 times [2022-09-16 11:45:14,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:14,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33118438] [2022-09-16 11:45:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:14,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33118438] [2022-09-16 11:45:14,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33118438] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:14,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:14,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353911837] [2022-09-16 11:45:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:14,823 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:14,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 498 transitions, 1858 flow. Second operand has 8 states, 8 states have (on average 406.5) internal successors, (3252), 8 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:14,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:14,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:14,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:15,844 INFO L130 PetriNetUnfolder]: 300/1858 cut-off events. [2022-09-16 11:45:15,845 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-09-16 11:45:15,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1858 events. 300/1858 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 13514 event pairs, 51 based on Foata normal form. 8/1774 useless extension candidates. Maximal degree in co-relation 3349. Up to 155 conditions per place. [2022-09-16 11:45:15,927 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 65 selfloop transitions, 17 changer transitions 0/517 dead transitions. [2022-09-16 11:45:15,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 517 transitions, 2070 flow [2022-09-16 11:45:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4510 transitions. [2022-09-16 11:45:15,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-09-16 11:45:15,930 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4510 transitions. [2022-09-16 11:45:15,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4510 transitions. [2022-09-16 11:45:15,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:15,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4510 transitions. [2022-09-16 11:45:15,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:15,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:15,939 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:15,939 INFO L175 Difference]: Start difference. First operand has 519 places, 498 transitions, 1858 flow. Second operand 11 states and 4510 transitions. [2022-09-16 11:45:15,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 517 transitions, 2070 flow [2022-09-16 11:45:15,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 517 transitions, 2057 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:15,953 INFO L231 Difference]: Finished difference. Result has 524 places, 496 transitions, 1864 flow [2022-09-16 11:45:15,953 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1864, PETRI_PLACES=524, PETRI_TRANSITIONS=496} [2022-09-16 11:45:15,954 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 102 predicate places. [2022-09-16 11:45:15,954 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 496 transitions, 1864 flow [2022-09-16 11:45:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.5) internal successors, (3252), 8 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:15,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:15,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:15,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-16 11:45:15,955 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1848079801, now seen corresponding path program 1 times [2022-09-16 11:45:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:15,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354654349] [2022-09-16 11:45:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354654349] [2022-09-16 11:45:15,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354654349] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:15,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:15,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508284569] [2022-09-16 11:45:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:15,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:15,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 496 transitions, 1864 flow. Second operand has 6 states, 6 states have (on average 416.6666666666667) internal successors, (2500), 6 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:15,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:15,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:15,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:20,217 INFO L130 PetriNetUnfolder]: 2534/18100 cut-off events. [2022-09-16 11:45:20,217 INFO L131 PetriNetUnfolder]: For 7822/8571 co-relation queries the response was YES. [2022-09-16 11:45:20,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30822 conditions, 18100 events. 2534/18100 cut-off events. For 7822/8571 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 244803 event pairs, 823 based on Foata normal form. 32/16206 useless extension candidates. Maximal degree in co-relation 30515. Up to 1029 conditions per place. [2022-09-16 11:45:20,566 INFO L137 encePairwiseOnDemand]: 474/480 looper letters, 52 selfloop transitions, 6 changer transitions 0/503 dead transitions. [2022-09-16 11:45:20,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 503 transitions, 2006 flow [2022-09-16 11:45:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2526 transitions. [2022-09-16 11:45:20,568 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770833333333333 [2022-09-16 11:45:20,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2526 transitions. [2022-09-16 11:45:20,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2526 transitions. [2022-09-16 11:45:20,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:20,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2526 transitions. [2022-09-16 11:45:20,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 421.0) internal successors, (2526), 6 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,572 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,573 INFO L175 Difference]: Start difference. First operand has 524 places, 496 transitions, 1864 flow. Second operand 6 states and 2526 transitions. [2022-09-16 11:45:20,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 503 transitions, 2006 flow [2022-09-16 11:45:20,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 503 transitions, 1969 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-09-16 11:45:20,634 INFO L231 Difference]: Finished difference. Result has 519 places, 495 transitions, 1837 flow [2022-09-16 11:45:20,635 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1837, PETRI_PLACES=519, PETRI_TRANSITIONS=495} [2022-09-16 11:45:20,635 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 97 predicate places. [2022-09-16 11:45:20,635 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 495 transitions, 1837 flow [2022-09-16 11:45:20,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.6666666666667) internal successors, (2500), 6 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:20,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:20,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-16 11:45:20,636 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:20,637 INFO L85 PathProgramCache]: Analyzing trace with hash 399047526, now seen corresponding path program 1 times [2022-09-16 11:45:20,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:20,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77570620] [2022-09-16 11:45:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:20,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77570620] [2022-09-16 11:45:20,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77570620] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:20,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:20,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769323367] [2022-09-16 11:45:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:20,699 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:20,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 495 transitions, 1837 flow. Second operand has 8 states, 8 states have (on average 406.625) internal successors, (3253), 8 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:20,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:20,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:20,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:21,568 INFO L130 PetriNetUnfolder]: 270/1819 cut-off events. [2022-09-16 11:45:21,569 INFO L131 PetriNetUnfolder]: For 700/700 co-relation queries the response was YES. [2022-09-16 11:45:21,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1819 events. 270/1819 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 13025 event pairs, 51 based on Foata normal form. 8/1736 useless extension candidates. Maximal degree in co-relation 3178. Up to 141 conditions per place. [2022-09-16 11:45:21,671 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 66 selfloop transitions, 17 changer transitions 0/517 dead transitions. [2022-09-16 11:45:21,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 517 transitions, 2071 flow [2022-09-16 11:45:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4511 transitions. [2022-09-16 11:45:21,675 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8543560606060606 [2022-09-16 11:45:21,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4511 transitions. [2022-09-16 11:45:21,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4511 transitions. [2022-09-16 11:45:21,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:21,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4511 transitions. [2022-09-16 11:45:21,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.09090909090907) internal successors, (4511), 11 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,684 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,684 INFO L175 Difference]: Start difference. First operand has 519 places, 495 transitions, 1837 flow. Second operand 11 states and 4511 transitions. [2022-09-16 11:45:21,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 517 transitions, 2071 flow [2022-09-16 11:45:21,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 517 transitions, 2053 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:45:21,697 INFO L231 Difference]: Finished difference. Result has 523 places, 494 transitions, 1849 flow [2022-09-16 11:45:21,698 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=523, PETRI_TRANSITIONS=494} [2022-09-16 11:45:21,698 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 101 predicate places. [2022-09-16 11:45:21,698 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 494 transitions, 1849 flow [2022-09-16 11:45:21,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.625) internal successors, (3253), 8 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:21,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-16 11:45:21,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 346248076, now seen corresponding path program 1 times [2022-09-16 11:45:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:21,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790946161] [2022-09-16 11:45:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:21,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:21,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790946161] [2022-09-16 11:45:21,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790946161] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:21,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:21,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864941745] [2022-09-16 11:45:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:21,757 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:21,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 494 transitions, 1849 flow. Second operand has 8 states, 8 states have (on average 406.625) internal successors, (3253), 8 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:21,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:21,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:21,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:26,934 INFO L130 PetriNetUnfolder]: 3420/22808 cut-off events. [2022-09-16 11:45:26,934 INFO L131 PetriNetUnfolder]: For 9803/10765 co-relation queries the response was YES. [2022-09-16 11:45:27,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39050 conditions, 22808 events. 3420/22808 cut-off events. For 9803/10765 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 325710 event pairs, 719 based on Foata normal form. 36/20275 useless extension candidates. Maximal degree in co-relation 38754. Up to 1152 conditions per place. [2022-09-16 11:45:27,393 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 73 selfloop transitions, 17 changer transitions 0/520 dead transitions. [2022-09-16 11:45:27,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 520 transitions, 2112 flow [2022-09-16 11:45:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4510 transitions. [2022-09-16 11:45:27,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-09-16 11:45:27,396 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4510 transitions. [2022-09-16 11:45:27,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4510 transitions. [2022-09-16 11:45:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4510 transitions. [2022-09-16 11:45:27,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,405 INFO L175 Difference]: Start difference. First operand has 523 places, 494 transitions, 1849 flow. Second operand 11 states and 4510 transitions. [2022-09-16 11:45:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 520 transitions, 2112 flow [2022-09-16 11:45:27,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 520 transitions, 2068 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:45:27,515 INFO L231 Difference]: Finished difference. Result has 522 places, 492 transitions, 1824 flow [2022-09-16 11:45:27,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1824, PETRI_PLACES=522, PETRI_TRANSITIONS=492} [2022-09-16 11:45:27,516 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 100 predicate places. [2022-09-16 11:45:27,516 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 492 transitions, 1824 flow [2022-09-16 11:45:27,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.625) internal successors, (3253), 8 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:27,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:27,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-16 11:45:27,517 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -292501984, now seen corresponding path program 1 times [2022-09-16 11:45:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:27,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198808937] [2022-09-16 11:45:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:27,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198808937] [2022-09-16 11:45:27,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198808937] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:27,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:27,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:27,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128504052] [2022-09-16 11:45:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:27,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:27,562 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 480 [2022-09-16 11:45:27,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 492 transitions, 1824 flow. Second operand has 6 states, 6 states have (on average 416.8333333333333) internal successors, (2501), 6 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:27,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:27,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 480 [2022-09-16 11:45:27,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:29,800 INFO L130 PetriNetUnfolder]: 1974/8575 cut-off events. [2022-09-16 11:45:29,800 INFO L131 PetriNetUnfolder]: For 6428/8946 co-relation queries the response was YES. [2022-09-16 11:45:30,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17077 conditions, 8575 events. 1974/8575 cut-off events. For 6428/8946 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 99517 event pairs, 726 based on Foata normal form. 5/7260 useless extension candidates. Maximal degree in co-relation 16794. Up to 1334 conditions per place. [2022-09-16 11:45:30,118 INFO L137 encePairwiseOnDemand]: 474/480 looper letters, 52 selfloop transitions, 6 changer transitions 0/499 dead transitions. [2022-09-16 11:45:30,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 499 transitions, 1972 flow [2022-09-16 11:45:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2526 transitions. [2022-09-16 11:45:30,121 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8770833333333333 [2022-09-16 11:45:30,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2526 transitions. [2022-09-16 11:45:30,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2526 transitions. [2022-09-16 11:45:30,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:30,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2526 transitions. [2022-09-16 11:45:30,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 421.0) internal successors, (2526), 6 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:30,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:30,127 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:30,127 INFO L175 Difference]: Start difference. First operand has 522 places, 492 transitions, 1824 flow. Second operand 6 states and 2526 transitions. [2022-09-16 11:45:30,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 499 transitions, 1972 flow [2022-09-16 11:45:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 499 transitions, 1927 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-09-16 11:45:30,165 INFO L231 Difference]: Finished difference. Result has 517 places, 491 transitions, 1797 flow [2022-09-16 11:45:30,165 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1797, PETRI_PLACES=517, PETRI_TRANSITIONS=491} [2022-09-16 11:45:30,166 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 95 predicate places. [2022-09-16 11:45:30,167 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 491 transitions, 1797 flow [2022-09-16 11:45:30,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 416.8333333333333) internal successors, (2501), 6 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:30,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:30,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-16 11:45:30,174 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2143757124, now seen corresponding path program 1 times [2022-09-16 11:45:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:30,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355766072] [2022-09-16 11:45:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:30,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355766072] [2022-09-16 11:45:30,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355766072] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:30,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:30,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313044411] [2022-09-16 11:45:30,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:30,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:30,241 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:30,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 491 transitions, 1797 flow. Second operand has 8 states, 8 states have (on average 406.75) internal successors, (3254), 8 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:30,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:30,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:30,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:34,975 INFO L130 PetriNetUnfolder]: 2994/20526 cut-off events. [2022-09-16 11:45:34,975 INFO L131 PetriNetUnfolder]: For 10807/11631 co-relation queries the response was YES. [2022-09-16 11:45:35,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35806 conditions, 20526 events. 2994/20526 cut-off events. For 10807/11631 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 282954 event pairs, 545 based on Foata normal form. 36/18382 useless extension candidates. Maximal degree in co-relation 35524. Up to 1020 conditions per place. [2022-09-16 11:45:35,335 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 74 selfloop transitions, 17 changer transitions 0/520 dead transitions. [2022-09-16 11:45:35,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 520 transitions, 2110 flow [2022-09-16 11:45:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4511 transitions. [2022-09-16 11:45:35,339 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8543560606060606 [2022-09-16 11:45:35,339 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4511 transitions. [2022-09-16 11:45:35,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4511 transitions. [2022-09-16 11:45:35,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:35,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4511 transitions. [2022-09-16 11:45:35,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.09090909090907) internal successors, (4511), 11 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,347 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,347 INFO L175 Difference]: Start difference. First operand has 517 places, 491 transitions, 1797 flow. Second operand 11 states and 4511 transitions. [2022-09-16 11:45:35,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 520 transitions, 2110 flow [2022-09-16 11:45:35,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 520 transitions, 2064 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:45:35,442 INFO L231 Difference]: Finished difference. Result has 521 places, 490 transitions, 1809 flow [2022-09-16 11:45:35,442 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1809, PETRI_PLACES=521, PETRI_TRANSITIONS=490} [2022-09-16 11:45:35,442 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 99 predicate places. [2022-09-16 11:45:35,442 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 490 transitions, 1809 flow [2022-09-16 11:45:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.75) internal successors, (3254), 8 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:35,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-16 11:45:35,443 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -955339067, now seen corresponding path program 1 times [2022-09-16 11:45:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788991906] [2022-09-16 11:45:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:35,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788991906] [2022-09-16 11:45:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788991906] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097276337] [2022-09-16 11:45:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:35,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:35,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 490 transitions, 1809 flow. Second operand has 8 states, 8 states have (on average 406.75) internal successors, (3254), 8 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:35,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:35,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:35,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:38,480 INFO L130 PetriNetUnfolder]: 2914/12294 cut-off events. [2022-09-16 11:45:38,480 INFO L131 PetriNetUnfolder]: For 8766/12344 co-relation queries the response was YES. [2022-09-16 11:45:38,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23889 conditions, 12294 events. 2914/12294 cut-off events. For 8766/12344 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 153367 event pairs, 690 based on Foata normal form. 57/10432 useless extension candidates. Maximal degree in co-relation 23608. Up to 1031 conditions per place. [2022-09-16 11:45:38,844 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 73 selfloop transitions, 17 changer transitions 0/516 dead transitions. [2022-09-16 11:45:38,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 516 transitions, 2093 flow [2022-09-16 11:45:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4510 transitions. [2022-09-16 11:45:38,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-09-16 11:45:38,847 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4510 transitions. [2022-09-16 11:45:38,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4510 transitions. [2022-09-16 11:45:38,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:38,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4510 transitions. [2022-09-16 11:45:38,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:38,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:38,853 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:38,853 INFO L175 Difference]: Start difference. First operand has 521 places, 490 transitions, 1809 flow. Second operand 11 states and 4510 transitions. [2022-09-16 11:45:38,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 516 transitions, 2093 flow [2022-09-16 11:45:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 516 transitions, 2021 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:45:38,887 INFO L231 Difference]: Finished difference. Result has 520 places, 488 transitions, 1784 flow [2022-09-16 11:45:38,887 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1784, PETRI_PLACES=520, PETRI_TRANSITIONS=488} [2022-09-16 11:45:38,887 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 98 predicate places. [2022-09-16 11:45:38,887 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 488 transitions, 1784 flow [2022-09-16 11:45:38,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.75) internal successors, (3254), 8 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:38,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:38,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:38,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-16 11:45:38,888 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:45:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash 449261478, now seen corresponding path program 1 times [2022-09-16 11:45:38,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:38,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101582892] [2022-09-16 11:45:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:38,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101582892] [2022-09-16 11:45:38,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101582892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:38,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:38,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:45:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817949702] [2022-09-16 11:45:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:45:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:45:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:38,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 480 [2022-09-16 11:45:38,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 488 transitions, 1784 flow. Second operand has 8 states, 8 states have (on average 406.875) internal successors, (3255), 8 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:38,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:38,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 480 [2022-09-16 11:45:38,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:41,313 INFO L130 PetriNetUnfolder]: 2304/8728 cut-off events. [2022-09-16 11:45:41,314 INFO L131 PetriNetUnfolder]: For 6224/8047 co-relation queries the response was YES. [2022-09-16 11:45:41,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17220 conditions, 8728 events. 2304/8728 cut-off events. For 6224/8047 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 102389 event pairs, 657 based on Foata normal form. 55/7252 useless extension candidates. Maximal degree in co-relation 16941. Up to 1031 conditions per place. [2022-09-16 11:45:41,448 INFO L137 encePairwiseOnDemand]: 466/480 looper letters, 0 selfloop transitions, 0 changer transitions 517/517 dead transitions. [2022-09-16 11:45:41,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 517 transitions, 2064 flow [2022-09-16 11:45:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:45:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:45:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4511 transitions. [2022-09-16 11:45:41,451 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8543560606060606 [2022-09-16 11:45:41,451 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4511 transitions. [2022-09-16 11:45:41,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4511 transitions. [2022-09-16 11:45:41,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:41,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4511 transitions. [2022-09-16 11:45:41,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 410.09090909090907) internal successors, (4511), 11 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:41,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:41,456 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 480.0) internal successors, (5760), 12 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:41,456 INFO L175 Difference]: Start difference. First operand has 520 places, 488 transitions, 1784 flow. Second operand 11 states and 4511 transitions. [2022-09-16 11:45:41,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 517 transitions, 2064 flow [2022-09-16 11:45:41,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 517 transitions, 2018 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-09-16 11:45:41,482 INFO L231 Difference]: Finished difference. Result has 519 places, 0 transitions, 0 flow [2022-09-16 11:45:41,483 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=519, PETRI_TRANSITIONS=0} [2022-09-16 11:45:41,484 INFO L287 CegarLoopForPetriNet]: 422 programPoint places, 97 predicate places. [2022-09-16 11:45:41,484 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 0 transitions, 0 flow [2022-09-16 11:45:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 406.875) internal successors, (3255), 8 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:41,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 75 remaining) [2022-09-16 11:45:41,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 75 remaining) [2022-09-16 11:45:41,488 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 75 remaining) [2022-09-16 11:45:41,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 75 remaining) [2022-09-16 11:45:41,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 75 remaining) [2022-09-16 11:45:41,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 75 remaining) [2022-09-16 11:45:41,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 75 remaining) [2022-09-16 11:45:41,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 75 remaining) [2022-09-16 11:45:41,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-16 11:45:41,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:41,498 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:45:41,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:45:41,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:45:41 BasicIcfg [2022-09-16 11:45:41,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:45:41,504 INFO L158 Benchmark]: Toolchain (without parser) took 67715.10ms. Allocated memory was 177.2MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 121.0MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-09-16 11:45:41,507 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory was 137.8MB in the beginning and 137.7MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:45:41,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.66ms. Allocated memory is still 177.2MB. Free memory was 120.8MB in the beginning and 151.9MB in the end (delta: -31.1MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-09-16 11:45:41,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.93ms. Allocated memory is still 177.2MB. Free memory was 151.9MB in the beginning and 149.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:45:41,508 INFO L158 Benchmark]: Boogie Preprocessor took 54.73ms. Allocated memory is still 177.2MB. Free memory was 149.0MB in the beginning and 147.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:45:41,508 INFO L158 Benchmark]: RCFGBuilder took 701.01ms. Allocated memory is still 177.2MB. Free memory was 147.2MB in the beginning and 119.1MB in the end (delta: 28.1MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-09-16 11:45:41,508 INFO L158 Benchmark]: TraceAbstraction took 66651.11ms. Allocated memory was 177.2MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 118.6MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2022-09-16 11:45:41,510 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 137.8MB in the beginning and 137.7MB in the end (delta: 77.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.66ms. Allocated memory is still 177.2MB. Free memory was 120.8MB in the beginning and 151.9MB in the end (delta: -31.1MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.93ms. Allocated memory is still 177.2MB. Free memory was 151.9MB in the beginning and 149.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.73ms. Allocated memory is still 177.2MB. Free memory was 149.0MB in the beginning and 147.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 701.01ms. Allocated memory is still 177.2MB. Free memory was 147.2MB in the beginning and 119.1MB in the end (delta: 28.1MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 66651.11ms. Allocated memory was 177.2MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 118.6MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 782 locations, 75 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: 66.4s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 63.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3385 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3385 mSDsluCounter, 2784 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2516 mSDsCounter, 329 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5277 IncrementalHoareTripleChecker+Invalid, 5606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 329 mSolverCounterUnsat, 1152 mSDtfsCounter, 5277 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1864occurred in iteration=32, InterpolantAutomatonStates: 291, 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, 1.6s InterpolantComputationTime, 3672 NumberOfCodeBlocks, 3672 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3633 ConstructedInterpolants, 0 QuantifiedInterpolants, 8793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 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 36 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:45:41,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...