/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:46:49,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:46:49,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:46:49,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:46:49,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:46:49,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:46:49,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:46:49,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:46:49,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:46:49,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:46:49,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:46:49,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:46:49,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:46:49,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:46:49,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:46:49,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:46:49,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:46:49,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:46:49,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:46:49,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:46:49,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:46:49,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:46:49,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:46:49,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:46:49,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:46:49,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:46:49,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:46:49,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:46:49,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:46:49,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:46:49,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:46:49,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:46:49,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:46:49,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:46:49,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:46:49,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:46:49,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:46:49,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:46:49,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:46:49,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:46:49,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:46:49,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:46:49,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:46:49,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:46:49,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:46:49,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:46:49,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:46:49,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:46:49,963 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:46:49,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:46:49,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:46:49,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:46:49,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:46:49,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:46:49,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:46:49,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:46:49,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:46:49,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:46:49,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:46:49,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:46:49,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:46:49,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:46:49,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:46:49,966 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:46:49,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:46:49,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:46:50,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:46:50,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:46:50,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:46:50,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:46:50,154 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:46:50,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-09-16 11:46:50,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41748f29d/08d4399a0a3147adada54e69d972c609/FLAGde0122228 [2022-09-16 11:46:50,529 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:46:50,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-09-16 11:46:50,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41748f29d/08d4399a0a3147adada54e69d972c609/FLAGde0122228 [2022-09-16 11:46:50,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41748f29d/08d4399a0a3147adada54e69d972c609 [2022-09-16 11:46:50,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:46:50,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:46:50,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:46:50,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:46:50,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:46:50,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:46:50" (1/1) ... [2022-09-16 11:46:50,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498ab87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:50, skipping insertion in model container [2022-09-16 11:46:50,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:46:50" (1/1) ... [2022-09-16 11:46:50,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:46:50,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:46:51,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-09-16 11:46:51,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:46:51,242 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:46:51,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-09-16 11:46:51,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:46:51,290 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:46:51,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51 WrapperNode [2022-09-16 11:46:51,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:46:51,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:46:51,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:46:51,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:46:51,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,375 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 754 [2022-09-16 11:46:51,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:46:51,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:46:51,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:46:51,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:46:51,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:46:51,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:46:51,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:46:51,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:46:51,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (1/1) ... [2022-09-16 11:46:51,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:46:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:51,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:46:51,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:46:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:46:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:46:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:46:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:46:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:46:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:46:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:46:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:46:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:46:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:46:51,496 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:46:51,643 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:46:51,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:46:52,390 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:46:52,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:46:52,405 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:46:52,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:46:52 BoogieIcfgContainer [2022-09-16 11:46:52,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:46:52,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:46:52,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:46:52,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:46:52,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:46:50" (1/3) ... [2022-09-16 11:46:52,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55304a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:46:52, skipping insertion in model container [2022-09-16 11:46:52,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:46:51" (2/3) ... [2022-09-16 11:46:52,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55304a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:46:52, skipping insertion in model container [2022-09-16 11:46:52,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:46:52" (3/3) ... [2022-09-16 11:46:52,416 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-09-16 11:46:52,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:46:52,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-09-16 11:46:52,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:46:52,579 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:46:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 937 places, 1030 transitions, 2084 flow [2022-09-16 11:46:53,035 INFO L130 PetriNetUnfolder]: 103/1027 cut-off events. [2022-09-16 11:46:53,035 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:46:53,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 1027 events. 103/1027 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4313 event pairs, 0 based on Foata normal form. 0/864 useless extension candidates. Maximal degree in co-relation 790. Up to 2 conditions per place. [2022-09-16 11:46:53,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 937 places, 1030 transitions, 2084 flow [2022-09-16 11:46:53,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 914 places, 1006 transitions, 2027 flow [2022-09-16 11:46:53,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:46:53,115 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;@bc93123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:46:53,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-09-16 11:46:53,124 INFO L130 PetriNetUnfolder]: 3/119 cut-off events. [2022-09-16 11:46:53,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:46:53,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:53,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:53,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash 750916427, now seen corresponding path program 1 times [2022-09-16 11:46:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:53,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115882681] [2022-09-16 11:46:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115882681] [2022-09-16 11:46:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115882681] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:53,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:53,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:46:53,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786213051] [2022-09-16 11:46:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:53,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:46:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:46:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:46:53,421 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:53,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 1006 transitions, 2027 flow. Second operand has 4 states, 4 states have (on average 951.5) internal successors, (3806), 4 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:53,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:53,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:54,147 INFO L130 PetriNetUnfolder]: 131/1789 cut-off events. [2022-09-16 11:46:54,147 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-09-16 11:46:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 1789 events. 131/1789 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11119 event pairs, 0 based on Foata normal form. 104/1593 useless extension candidates. Maximal degree in co-relation 1347. Up to 44 conditions per place. [2022-09-16 11:46:54,224 INFO L137 encePairwiseOnDemand]: 974/1030 looper letters, 58 selfloop transitions, 14 changer transitions 6/1001 dead transitions. [2022-09-16 11:46:54,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1001 transitions, 2176 flow [2022-09-16 11:46:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:46:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:46:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4894 transitions. [2022-09-16 11:46:54,245 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9502912621359223 [2022-09-16 11:46:54,246 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4894 transitions. [2022-09-16 11:46:54,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4894 transitions. [2022-09-16 11:46:54,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:54,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4894 transitions. [2022-09-16 11:46:54,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 978.8) internal successors, (4894), 5 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:54,282 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:54,284 INFO L175 Difference]: Start difference. First operand has 914 places, 1006 transitions, 2027 flow. Second operand 5 states and 4894 transitions. [2022-09-16 11:46:54,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1001 transitions, 2176 flow [2022-09-16 11:46:54,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 913 places, 1001 transitions, 2158 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:54,312 INFO L231 Difference]: Finished difference. Result has 916 places, 975 transitions, 2038 flow [2022-09-16 11:46:54,315 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=909, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2038, PETRI_PLACES=916, PETRI_TRANSITIONS=975} [2022-09-16 11:46:54,319 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 2 predicate places. [2022-09-16 11:46:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 916 places, 975 transitions, 2038 flow [2022-09-16 11:46:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 951.5) internal successors, (3806), 4 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:54,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:54,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:54,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:46:54,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -967177041, now seen corresponding path program 1 times [2022-09-16 11:46:54,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:54,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779992737] [2022-09-16 11:46:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:54,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779992737] [2022-09-16 11:46:54,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779992737] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:54,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418304945] [2022-09-16 11:46:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:54,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:54,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:46:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:54,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:54,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:54,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:54,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418304945] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:54,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:54,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:46:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513372072] [2022-09-16 11:46:54,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:46:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:46:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:46:54,732 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:54,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 975 transitions, 2038 flow. Second operand has 12 states, 12 states have (on average 952.6666666666666) internal successors, (11432), 12 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:54,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:54,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:54,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:56,457 INFO L130 PetriNetUnfolder]: 326/4246 cut-off events. [2022-09-16 11:46:56,458 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-09-16 11:46:56,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 4246 events. 326/4246 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 36079 event pairs, 0 based on Foata normal form. 9/3535 useless extension candidates. Maximal degree in co-relation 3224. Up to 35 conditions per place. [2022-09-16 11:46:56,660 INFO L137 encePairwiseOnDemand]: 1007/1030 looper letters, 109 selfloop transitions, 62 changer transitions 0/1094 dead transitions. [2022-09-16 11:46:56,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 1094 transitions, 2720 flow [2022-09-16 11:46:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:46:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:46:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17280 transitions. [2022-09-16 11:46:56,682 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-09-16 11:46:56,682 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 17280 transitions. [2022-09-16 11:46:56,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 17280 transitions. [2022-09-16 11:46:56,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:56,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 17280 transitions. [2022-09-16 11:46:56,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 960.0) internal successors, (17280), 18 states have internal predecessors, (17280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:56,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1030.0) internal successors, (19570), 19 states have internal predecessors, (19570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:56,745 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1030.0) internal successors, (19570), 19 states have internal predecessors, (19570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:56,745 INFO L175 Difference]: Start difference. First operand has 916 places, 975 transitions, 2038 flow. Second operand 18 states and 17280 transitions. [2022-09-16 11:46:56,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 1094 transitions, 2720 flow [2022-09-16 11:46:56,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1094 transitions, 2712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:46:56,761 INFO L231 Difference]: Finished difference. Result has 930 places, 1017 transitions, 2400 flow [2022-09-16 11:46:56,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=909, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2400, PETRI_PLACES=930, PETRI_TRANSITIONS=1017} [2022-09-16 11:46:56,763 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 16 predicate places. [2022-09-16 11:46:56,763 INFO L495 AbstractCegarLoop]: Abstraction has has 930 places, 1017 transitions, 2400 flow [2022-09-16 11:46:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 952.6666666666666) internal successors, (11432), 12 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:56,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:56,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:56,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:56,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 82285082, now seen corresponding path program 1 times [2022-09-16 11:46:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997556528] [2022-09-16 11:46:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:57,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997556528] [2022-09-16 11:46:57,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997556528] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:57,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6164161] [2022-09-16 11:46:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:57,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:57,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:57,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:57,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:46:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:57,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:57,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:57,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:46:57,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6164161] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:57,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:46:57,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:46:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617354068] [2022-09-16 11:46:57,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:46:57,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1030 [2022-09-16 11:46:57,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 1017 transitions, 2400 flow. Second operand has 6 states, 6 states have (on average 952.3333333333334) internal successors, (5714), 6 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:57,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:57,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1030 [2022-09-16 11:46:57,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:58,636 INFO L130 PetriNetUnfolder]: 326/4234 cut-off events. [2022-09-16 11:46:58,636 INFO L131 PetriNetUnfolder]: For 205/215 co-relation queries the response was YES. [2022-09-16 11:46:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 4234 events. 326/4234 cut-off events. For 205/215 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 36031 event pairs, 0 based on Foata normal form. 12/3526 useless extension candidates. Maximal degree in co-relation 3629. Up to 68 conditions per place. [2022-09-16 11:46:58,844 INFO L137 encePairwiseOnDemand]: 1013/1030 looper letters, 59 selfloop transitions, 43 changer transitions 0/1025 dead transitions. [2022-09-16 11:46:58,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 1025 transitions, 2575 flow [2022-09-16 11:46:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6722 transitions. [2022-09-16 11:46:58,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9323162274618585 [2022-09-16 11:46:58,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6722 transitions. [2022-09-16 11:46:58,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6722 transitions. [2022-09-16 11:46:58,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:58,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6722 transitions. [2022-09-16 11:46:58,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 960.2857142857143) internal successors, (6722), 7 states have internal predecessors, (6722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:58,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:58,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:58,877 INFO L175 Difference]: Start difference. First operand has 930 places, 1017 transitions, 2400 flow. Second operand 7 states and 6722 transitions. [2022-09-16 11:46:58,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 1025 transitions, 2575 flow [2022-09-16 11:46:58,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 924 places, 1025 transitions, 2459 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:46:58,896 INFO L231 Difference]: Finished difference. Result has 924 places, 1005 transitions, 2289 flow [2022-09-16 11:46:58,898 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=962, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2289, PETRI_PLACES=924, PETRI_TRANSITIONS=1005} [2022-09-16 11:46:58,899 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 10 predicate places. [2022-09-16 11:46:58,899 INFO L495 AbstractCegarLoop]: Abstraction has has 924 places, 1005 transitions, 2289 flow [2022-09-16 11:46:58,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 952.3333333333334) internal successors, (5714), 6 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:58,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:58,900 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:46:58,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:46:59,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:46:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1021321435, now seen corresponding path program 2 times [2022-09-16 11:46:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:59,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137904800] [2022-09-16 11:46:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137904800] [2022-09-16 11:46:59,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137904800] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117066337] [2022-09-16 11:46:59,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:46:59,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:59,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:59,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:59,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:46:59,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:46:59,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:46:59,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 11:46:59,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-09-16 11:46:59,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117066337] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:59,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:59,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-09-16 11:46:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403322409] [2022-09-16 11:46:59,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:59,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:46:59,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:46:59,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:46:59,486 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:46:59,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 1005 transitions, 2289 flow. Second operand has 18 states, 18 states have (on average 941.8333333333334) internal successors, (16953), 18 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:59,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:59,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:46:59,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:01,593 INFO L130 PetriNetUnfolder]: 391/5032 cut-off events. [2022-09-16 11:47:01,594 INFO L131 PetriNetUnfolder]: For 189/201 co-relation queries the response was YES. [2022-09-16 11:47:01,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 5032 events. 391/5032 cut-off events. For 189/201 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 44846 event pairs, 0 based on Foata normal form. 3/4171 useless extension candidates. Maximal degree in co-relation 4019. Up to 22 conditions per place. [2022-09-16 11:47:01,769 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 127 selfloop transitions, 67 changer transitions 0/1105 dead transitions. [2022-09-16 11:47:01,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1105 transitions, 2924 flow [2022-09-16 11:47:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:47:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:47:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 18957 transitions. [2022-09-16 11:47:01,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.920242718446602 [2022-09-16 11:47:01,796 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 18957 transitions. [2022-09-16 11:47:01,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 18957 transitions. [2022-09-16 11:47:01,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:01,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 18957 transitions. [2022-09-16 11:47:01,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 947.85) internal successors, (18957), 20 states have internal predecessors, (18957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:01,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1030.0) internal successors, (21630), 21 states have internal predecessors, (21630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:01,851 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1030.0) internal successors, (21630), 21 states have internal predecessors, (21630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:01,851 INFO L175 Difference]: Start difference. First operand has 924 places, 1005 transitions, 2289 flow. Second operand 20 states and 18957 transitions. [2022-09-16 11:47:01,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1105 transitions, 2924 flow [2022-09-16 11:47:01,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 1105 transitions, 2841 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:47:01,868 INFO L231 Difference]: Finished difference. Result has 932 places, 1010 transitions, 2363 flow [2022-09-16 11:47:01,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=940, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2363, PETRI_PLACES=932, PETRI_TRANSITIONS=1010} [2022-09-16 11:47:01,870 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 18 predicate places. [2022-09-16 11:47:01,870 INFO L495 AbstractCegarLoop]: Abstraction has has 932 places, 1010 transitions, 2363 flow [2022-09-16 11:47:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 941.8333333333334) internal successors, (16953), 18 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:01,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:01,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:01,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:47:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:02,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 645888929, now seen corresponding path program 1 times [2022-09-16 11:47:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933705140] [2022-09-16 11:47:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:47:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:02,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933705140] [2022-09-16 11:47:02,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933705140] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:02,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:02,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960387996] [2022-09-16 11:47:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:47:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:47:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:47:02,189 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 953 out of 1030 [2022-09-16 11:47:02,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 1010 transitions, 2363 flow. Second operand has 5 states, 5 states have (on average 957.4) internal successors, (4787), 5 states have internal predecessors, (4787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:02,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:02,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 953 of 1030 [2022-09-16 11:47:02,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:03,492 INFO L130 PetriNetUnfolder]: 326/4237 cut-off events. [2022-09-16 11:47:03,492 INFO L131 PetriNetUnfolder]: For 245/255 co-relation queries the response was YES. [2022-09-16 11:47:03,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 4237 events. 326/4237 cut-off events. For 245/255 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 35827 event pairs, 0 based on Foata normal form. 3/3535 useless extension candidates. Maximal degree in co-relation 804. Up to 113 conditions per place. [2022-09-16 11:47:03,737 INFO L137 encePairwiseOnDemand]: 1015/1030 looper letters, 59 selfloop transitions, 20 changer transitions 0/1014 dead transitions. [2022-09-16 11:47:03,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1014 transitions, 2525 flow [2022-09-16 11:47:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:47:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:47:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4818 transitions. [2022-09-16 11:47:03,744 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9355339805825242 [2022-09-16 11:47:03,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4818 transitions. [2022-09-16 11:47:03,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4818 transitions. [2022-09-16 11:47:03,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:03,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4818 transitions. [2022-09-16 11:47:03,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 963.6) internal successors, (4818), 5 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:03,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:03,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:03,758 INFO L175 Difference]: Start difference. First operand has 932 places, 1010 transitions, 2363 flow. Second operand 5 states and 4818 transitions. [2022-09-16 11:47:03,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1014 transitions, 2525 flow [2022-09-16 11:47:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1014 transitions, 2381 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-09-16 11:47:03,770 INFO L231 Difference]: Finished difference. Result has 922 places, 1008 transitions, 2257 flow [2022-09-16 11:47:03,772 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2205, PETRI_DIFFERENCE_MINUEND_PLACES=917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2257, PETRI_PLACES=922, PETRI_TRANSITIONS=1008} [2022-09-16 11:47:03,773 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 8 predicate places. [2022-09-16 11:47:03,773 INFO L495 AbstractCegarLoop]: Abstraction has has 922 places, 1008 transitions, 2257 flow [2022-09-16 11:47:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 957.4) internal successors, (4787), 5 states have internal predecessors, (4787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:03,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:03,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:03,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:47:03,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash -867375884, now seen corresponding path program 1 times [2022-09-16 11:47:03,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:03,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882365322] [2022-09-16 11:47:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:47:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882365322] [2022-09-16 11:47:03,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882365322] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227160590] [2022-09-16 11:47:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:03,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:03,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:03,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:47:03,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:47:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:03,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:47:03,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:47:04,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:47:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:47:04,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227160590] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:47:04,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:47:04,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:47:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562083988] [2022-09-16 11:47:04,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:47:04,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:47:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:47:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:47:04,109 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:47:04,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 1008 transitions, 2257 flow. Second operand has 15 states, 15 states have (on average 942.4) internal successors, (14136), 15 states have internal predecessors, (14136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:04,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:04,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:47:04,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:05,113 INFO L130 PetriNetUnfolder]: 196/2647 cut-off events. [2022-09-16 11:47:05,114 INFO L131 PetriNetUnfolder]: For 73/79 co-relation queries the response was YES. [2022-09-16 11:47:05,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 2647 events. 196/2647 cut-off events. For 73/79 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 18890 event pairs, 0 based on Foata normal form. 6/2230 useless extension candidates. Maximal degree in co-relation 2450. Up to 57 conditions per place. [2022-09-16 11:47:05,205 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 74 selfloop transitions, 46 changer transitions 0/1031 dead transitions. [2022-09-16 11:47:05,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 1031 transitions, 2553 flow [2022-09-16 11:47:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:47:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:47:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10416 transitions. [2022-09-16 11:47:05,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9193292144748455 [2022-09-16 11:47:05,225 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 10416 transitions. [2022-09-16 11:47:05,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 10416 transitions. [2022-09-16 11:47:05,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:05,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 10416 transitions. [2022-09-16 11:47:05,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 946.9090909090909) internal successors, (10416), 11 states have internal predecessors, (10416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:05,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1030.0) internal successors, (12360), 12 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:05,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1030.0) internal successors, (12360), 12 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:05,259 INFO L175 Difference]: Start difference. First operand has 922 places, 1008 transitions, 2257 flow. Second operand 11 states and 10416 transitions. [2022-09-16 11:47:05,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 1031 transitions, 2553 flow [2022-09-16 11:47:05,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 928 places, 1031 transitions, 2521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:05,273 INFO L231 Difference]: Finished difference. Result has 931 places, 1007 transitions, 2370 flow [2022-09-16 11:47:05,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=918, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2370, PETRI_PLACES=931, PETRI_TRANSITIONS=1007} [2022-09-16 11:47:05,276 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 17 predicate places. [2022-09-16 11:47:05,276 INFO L495 AbstractCegarLoop]: Abstraction has has 931 places, 1007 transitions, 2370 flow [2022-09-16 11:47:05,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 942.4) internal successors, (14136), 15 states have internal predecessors, (14136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:05,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:05,279 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:05,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:47:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:05,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1704927898, now seen corresponding path program 2 times [2022-09-16 11:47:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:05,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15491670] [2022-09-16 11:47:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:47:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15491670] [2022-09-16 11:47:05,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15491670] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959867194] [2022-09-16 11:47:05,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:47:05,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:05,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:47:05,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:47:05,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:47:05,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:47:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:47:05,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-09-16 11:47:05,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:47:05,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959867194] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:05,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:47:05,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-09-16 11:47:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358469160] [2022-09-16 11:47:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:47:05,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:05,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 1007 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:05,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:05,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:05,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:09,681 INFO L130 PetriNetUnfolder]: 1489/12445 cut-off events. [2022-09-16 11:47:09,681 INFO L131 PetriNetUnfolder]: For 158/164 co-relation queries the response was YES. [2022-09-16 11:47:09,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14651 conditions, 12445 events. 1489/12445 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 147199 event pairs, 216 based on Foata normal form. 0/10276 useless extension candidates. Maximal degree in co-relation 4715. Up to 492 conditions per place. [2022-09-16 11:47:09,987 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 61 selfloop transitions, 7 changer transitions 0/1024 dead transitions. [2022-09-16 11:47:09,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1024 transitions, 2553 flow [2022-09-16 11:47:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6649 transitions. [2022-09-16 11:47:09,992 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9221914008321775 [2022-09-16 11:47:09,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6649 transitions. [2022-09-16 11:47:09,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6649 transitions. [2022-09-16 11:47:09,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:09,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6649 transitions. [2022-09-16 11:47:09,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.8571428571429) internal successors, (6649), 7 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:10,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:10,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:10,003 INFO L175 Difference]: Start difference. First operand has 931 places, 1007 transitions, 2370 flow. Second operand 7 states and 6649 transitions. [2022-09-16 11:47:10,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1024 transitions, 2553 flow [2022-09-16 11:47:10,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1024 transitions, 2482 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-09-16 11:47:10,016 INFO L231 Difference]: Finished difference. Result has 927 places, 1006 transitions, 2311 flow [2022-09-16 11:47:10,017 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2311, PETRI_PLACES=927, PETRI_TRANSITIONS=1006} [2022-09-16 11:47:10,018 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 13 predicate places. [2022-09-16 11:47:10,018 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1006 transitions, 2311 flow [2022-09-16 11:47:10,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:10,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:10,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:10,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:47:10,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:10,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1313159877, now seen corresponding path program 1 times [2022-09-16 11:47:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:10,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460226917] [2022-09-16 11:47:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-09-16 11:47:10,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:10,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460226917] [2022-09-16 11:47:10,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460226917] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:10,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:10,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869372298] [2022-09-16 11:47:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:10,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:10,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:10,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1006 transitions, 2311 flow. Second operand has 4 states, 4 states have (on average 941.75) internal successors, (3767), 4 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:10,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:10,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:13,633 INFO L130 PetriNetUnfolder]: 1093/10558 cut-off events. [2022-09-16 11:47:13,633 INFO L131 PetriNetUnfolder]: For 145/151 co-relation queries the response was YES. [2022-09-16 11:47:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12362 conditions, 10558 events. 1093/10558 cut-off events. For 145/151 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 122144 event pairs, 180 based on Foata normal form. 18/8785 useless extension candidates. Maximal degree in co-relation 7058. Up to 490 conditions per place. [2022-09-16 11:47:14,095 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 64 selfloop transitions, 8 changer transitions 0/1028 dead transitions. [2022-09-16 11:47:14,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 1028 transitions, 2505 flow [2022-09-16 11:47:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3836 transitions. [2022-09-16 11:47:14,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9310679611650485 [2022-09-16 11:47:14,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3836 transitions. [2022-09-16 11:47:14,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3836 transitions. [2022-09-16 11:47:14,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:14,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3836 transitions. [2022-09-16 11:47:14,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 959.0) internal successors, (3836), 4 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:14,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:14,119 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:14,119 INFO L175 Difference]: Start difference. First operand has 927 places, 1006 transitions, 2311 flow. Second operand 4 states and 3836 transitions. [2022-09-16 11:47:14,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 928 places, 1028 transitions, 2505 flow [2022-09-16 11:47:14,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 924 places, 1028 transitions, 2495 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:14,136 INFO L231 Difference]: Finished difference. Result has 927 places, 1008 transitions, 2347 flow [2022-09-16 11:47:14,137 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=921, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2347, PETRI_PLACES=927, PETRI_TRANSITIONS=1008} [2022-09-16 11:47:14,139 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 13 predicate places. [2022-09-16 11:47:14,139 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 1008 transitions, 2347 flow [2022-09-16 11:47:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 941.75) internal successors, (3767), 4 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:14,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:14,140 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:14,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:47:14,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash 567663781, now seen corresponding path program 1 times [2022-09-16 11:47:14,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:14,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014947185] [2022-09-16 11:47:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:47:14,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014947185] [2022-09-16 11:47:14,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014947185] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93209359] [2022-09-16 11:47:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:14,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:14,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:14,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:47:14,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:47:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:14,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:47:14,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:47:14,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:47:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-09-16 11:47:14,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93209359] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:47:14,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:47:14,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-09-16 11:47:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979588919] [2022-09-16 11:47:14,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:47:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:47:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:47:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:47:14,620 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 938 out of 1030 [2022-09-16 11:47:14,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1008 transitions, 2347 flow. Second operand has 22 states, 22 states have (on average 942.3181818181819) internal successors, (20731), 22 states have internal predecessors, (20731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:14,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:14,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 938 of 1030 [2022-09-16 11:47:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:15,374 INFO L130 PetriNetUnfolder]: 64/1177 cut-off events. [2022-09-16 11:47:15,375 INFO L131 PetriNetUnfolder]: For 121/131 co-relation queries the response was YES. [2022-09-16 11:47:15,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 1177 events. 64/1177 cut-off events. For 121/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5397 event pairs, 0 based on Foata normal form. 6/1036 useless extension candidates. Maximal degree in co-relation 1351. Up to 33 conditions per place. [2022-09-16 11:47:15,409 INFO L137 encePairwiseOnDemand]: 1006/1030 looper letters, 83 selfloop transitions, 51 changer transitions 0/1046 dead transitions. [2022-09-16 11:47:15,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 1046 transitions, 2720 flow [2022-09-16 11:47:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:47:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:47:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16086 transitions. [2022-09-16 11:47:15,418 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9186750428326671 [2022-09-16 11:47:15,418 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 16086 transitions. [2022-09-16 11:47:15,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 16086 transitions. [2022-09-16 11:47:15,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:15,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 16086 transitions. [2022-09-16 11:47:15,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 946.2352941176471) internal successors, (16086), 17 states have internal predecessors, (16086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:15,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1030.0) internal successors, (18540), 18 states have internal predecessors, (18540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:15,446 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1030.0) internal successors, (18540), 18 states have internal predecessors, (18540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:15,446 INFO L175 Difference]: Start difference. First operand has 927 places, 1008 transitions, 2347 flow. Second operand 17 states and 16086 transitions. [2022-09-16 11:47:15,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 1046 transitions, 2720 flow [2022-09-16 11:47:15,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 1046 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:15,460 INFO L231 Difference]: Finished difference. Result has 945 places, 1004 transitions, 2452 flow [2022-09-16 11:47:15,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2452, PETRI_PLACES=945, PETRI_TRANSITIONS=1004} [2022-09-16 11:47:15,462 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 31 predicate places. [2022-09-16 11:47:15,462 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 1004 transitions, 2452 flow [2022-09-16 11:47:15,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 942.3181818181819) internal successors, (20731), 22 states have internal predecessors, (20731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:15,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:15,465 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:15,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:47:15,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:15,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash -408704565, now seen corresponding path program 2 times [2022-09-16 11:47:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:15,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818164530] [2022-09-16 11:47:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:15,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:15,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818164530] [2022-09-16 11:47:15,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818164530] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:15,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:15,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931012354] [2022-09-16 11:47:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:15,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:15,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:15,790 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:15,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 1004 transitions, 2452 flow. Second operand has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:15,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:15,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:15,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:17,664 INFO L130 PetriNetUnfolder]: 928/5308 cut-off events. [2022-09-16 11:47:17,664 INFO L131 PetriNetUnfolder]: For 617/1811 co-relation queries the response was YES. [2022-09-16 11:47:17,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 5308 events. 928/5308 cut-off events. For 617/1811 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 54861 event pairs, 248 based on Foata normal form. 0/4225 useless extension candidates. Maximal degree in co-relation 6489. Up to 491 conditions per place. [2022-09-16 11:47:17,809 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 59 selfloop transitions, 7 changer transitions 0/1019 dead transitions. [2022-09-16 11:47:17,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 1019 transitions, 2625 flow [2022-09-16 11:47:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6647 transitions. [2022-09-16 11:47:17,813 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9219140083217753 [2022-09-16 11:47:17,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6647 transitions. [2022-09-16 11:47:17,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6647 transitions. [2022-09-16 11:47:17,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:17,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6647 transitions. [2022-09-16 11:47:17,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.5714285714286) internal successors, (6647), 7 states have internal predecessors, (6647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:17,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:17,823 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:17,823 INFO L175 Difference]: Start difference. First operand has 945 places, 1004 transitions, 2452 flow. Second operand 7 states and 6647 transitions. [2022-09-16 11:47:17,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 1019 transitions, 2625 flow [2022-09-16 11:47:17,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 934 places, 1019 transitions, 2523 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-09-16 11:47:17,837 INFO L231 Difference]: Finished difference. Result has 934 places, 1003 transitions, 2362 flow [2022-09-16 11:47:17,838 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2362, PETRI_PLACES=934, PETRI_TRANSITIONS=1003} [2022-09-16 11:47:17,838 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 20 predicate places. [2022-09-16 11:47:17,838 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1003 transitions, 2362 flow [2022-09-16 11:47:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:17,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:17,839 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:47:17,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 215063221, now seen corresponding path program 1 times [2022-09-16 11:47:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:17,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152337054] [2022-09-16 11:47:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:17,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152337054] [2022-09-16 11:47:17,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152337054] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:17,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:17,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887539235] [2022-09-16 11:47:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:17,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:17,895 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:17,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1003 transitions, 2362 flow. Second operand has 4 states, 4 states have (on average 942.0) internal successors, (3768), 4 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:17,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:17,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:17,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:19,673 INFO L130 PetriNetUnfolder]: 547/3882 cut-off events. [2022-09-16 11:47:19,674 INFO L131 PetriNetUnfolder]: For 466/2368 co-relation queries the response was YES. [2022-09-16 11:47:19,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 3882 events. 547/3882 cut-off events. For 466/2368 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 38291 event pairs, 180 based on Foata normal form. 14/3130 useless extension candidates. Maximal degree in co-relation 4656. Up to 426 conditions per place. [2022-09-16 11:47:19,857 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 63 selfloop transitions, 8 changer transitions 0/1024 dead transitions. [2022-09-16 11:47:19,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 935 places, 1024 transitions, 2551 flow [2022-09-16 11:47:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3835 transitions. [2022-09-16 11:47:19,860 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9308252427184466 [2022-09-16 11:47:19,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3835 transitions. [2022-09-16 11:47:19,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3835 transitions. [2022-09-16 11:47:19,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:19,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3835 transitions. [2022-09-16 11:47:19,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 958.75) internal successors, (3835), 4 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:19,866 INFO L175 Difference]: Start difference. First operand has 934 places, 1003 transitions, 2362 flow. Second operand 4 states and 3835 transitions. [2022-09-16 11:47:19,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 935 places, 1024 transitions, 2551 flow [2022-09-16 11:47:19,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 1024 transitions, 2541 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:19,881 INFO L231 Difference]: Finished difference. Result has 934 places, 1005 transitions, 2398 flow [2022-09-16 11:47:19,882 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2398, PETRI_PLACES=934, PETRI_TRANSITIONS=1005} [2022-09-16 11:47:19,883 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 20 predicate places. [2022-09-16 11:47:19,883 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1005 transitions, 2398 flow [2022-09-16 11:47:19,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.0) internal successors, (3768), 4 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:19,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:19,884 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:47:19,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1321738163, now seen corresponding path program 1 times [2022-09-16 11:47:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:19,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773957284] [2022-09-16 11:47:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:19,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773957284] [2022-09-16 11:47:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773957284] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:19,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045060432] [2022-09-16 11:47:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:19,968 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:19,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1005 transitions, 2398 flow. Second operand has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:19,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:19,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:19,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:21,692 INFO L130 PetriNetUnfolder]: 570/5374 cut-off events. [2022-09-16 11:47:21,692 INFO L131 PetriNetUnfolder]: For 240/708 co-relation queries the response was YES. [2022-09-16 11:47:21,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 5374 events. 570/5374 cut-off events. For 240/708 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 56053 event pairs, 104 based on Foata normal form. 8/4580 useless extension candidates. Maximal degree in co-relation 6265. Up to 299 conditions per place. [2022-09-16 11:47:21,858 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 61 selfloop transitions, 6 changer transitions 0/1022 dead transitions. [2022-09-16 11:47:21,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 939 places, 1022 transitions, 2579 flow [2022-09-16 11:47:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6646 transitions. [2022-09-16 11:47:21,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9217753120665741 [2022-09-16 11:47:21,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6646 transitions. [2022-09-16 11:47:21,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6646 transitions. [2022-09-16 11:47:21,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:21,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6646 transitions. [2022-09-16 11:47:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.4285714285714) internal successors, (6646), 7 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:21,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:21,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:21,872 INFO L175 Difference]: Start difference. First operand has 934 places, 1005 transitions, 2398 flow. Second operand 7 states and 6646 transitions. [2022-09-16 11:47:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 939 places, 1022 transitions, 2579 flow [2022-09-16 11:47:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 1022 transitions, 2579 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:21,887 INFO L231 Difference]: Finished difference. Result has 939 places, 1004 transitions, 2408 flow [2022-09-16 11:47:21,889 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=933, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=998, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2408, PETRI_PLACES=939, PETRI_TRANSITIONS=1004} [2022-09-16 11:47:21,889 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 25 predicate places. [2022-09-16 11:47:21,889 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 1004 transitions, 2408 flow [2022-09-16 11:47:21,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 941.8333333333334) internal successors, (5651), 6 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:21,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:21,890 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:21,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:47:21,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash 377913748, now seen corresponding path program 1 times [2022-09-16 11:47:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707884240] [2022-09-16 11:47:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707884240] [2022-09-16 11:47:21,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707884240] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:21,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:21,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:21,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952706054] [2022-09-16 11:47:21,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:21,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:21,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:21,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:21,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:21,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1004 transitions, 2408 flow. Second operand has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:21,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:21,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:21,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:23,532 INFO L130 PetriNetUnfolder]: 354/4347 cut-off events. [2022-09-16 11:47:23,532 INFO L131 PetriNetUnfolder]: For 238/1880 co-relation queries the response was YES. [2022-09-16 11:47:23,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 4347 events. 354/4347 cut-off events. For 238/1880 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 41113 event pairs, 48 based on Foata normal form. 14/3730 useless extension candidates. Maximal degree in co-relation 4854. Up to 204 conditions per place. [2022-09-16 11:47:23,686 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 63 selfloop transitions, 6 changer transitions 0/1022 dead transitions. [2022-09-16 11:47:23,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1022 transitions, 2582 flow [2022-09-16 11:47:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3831 transitions. [2022-09-16 11:47:23,690 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9298543689320389 [2022-09-16 11:47:23,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3831 transitions. [2022-09-16 11:47:23,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3831 transitions. [2022-09-16 11:47:23,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:23,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3831 transitions. [2022-09-16 11:47:23,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.75) internal successors, (3831), 4 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:23,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:23,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:23,697 INFO L175 Difference]: Start difference. First operand has 939 places, 1004 transitions, 2408 flow. Second operand 4 states and 3831 transitions. [2022-09-16 11:47:23,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1022 transitions, 2582 flow [2022-09-16 11:47:23,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 1022 transitions, 2568 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:23,712 INFO L231 Difference]: Finished difference. Result has 937 places, 1002 transitions, 2394 flow [2022-09-16 11:47:23,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2394, PETRI_PLACES=937, PETRI_TRANSITIONS=1002} [2022-09-16 11:47:23,715 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 23 predicate places. [2022-09-16 11:47:23,715 INFO L495 AbstractCegarLoop]: Abstraction has has 937 places, 1002 transitions, 2394 flow [2022-09-16 11:47:23,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:23,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:23,716 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:47:23,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1169573061, now seen corresponding path program 1 times [2022-09-16 11:47:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:23,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386612940] [2022-09-16 11:47:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:23,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386612940] [2022-09-16 11:47:23,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386612940] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:23,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:23,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602850674] [2022-09-16 11:47:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:23,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:23,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:23,810 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:23,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 937 places, 1002 transitions, 2394 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:23,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:23,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:25,564 INFO L130 PetriNetUnfolder]: 555/5354 cut-off events. [2022-09-16 11:47:25,565 INFO L131 PetriNetUnfolder]: For 210/738 co-relation queries the response was YES. [2022-09-16 11:47:25,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 5354 events. 555/5354 cut-off events. For 210/738 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 54412 event pairs, 145 based on Foata normal form. 10/4578 useless extension candidates. Maximal degree in co-relation 6230. Up to 321 conditions per place. [2022-09-16 11:47:25,717 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 51 selfloop transitions, 6 changer transitions 0/1012 dead transitions. [2022-09-16 11:47:25,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 1012 transitions, 2539 flow [2022-09-16 11:47:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6638 transitions. [2022-09-16 11:47:25,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9206657420249653 [2022-09-16 11:47:25,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6638 transitions. [2022-09-16 11:47:25,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6638 transitions. [2022-09-16 11:47:25,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:25,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6638 transitions. [2022-09-16 11:47:25,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.2857142857143) internal successors, (6638), 7 states have internal predecessors, (6638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:25,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:25,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:25,730 INFO L175 Difference]: Start difference. First operand has 937 places, 1002 transitions, 2394 flow. Second operand 7 states and 6638 transitions. [2022-09-16 11:47:25,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 1012 transitions, 2539 flow [2022-09-16 11:47:25,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 1012 transitions, 2529 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:25,745 INFO L231 Difference]: Finished difference. Result has 940 places, 1001 transitions, 2394 flow [2022-09-16 11:47:25,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2394, PETRI_PLACES=940, PETRI_TRANSITIONS=1001} [2022-09-16 11:47:25,747 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:47:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1001 transitions, 2394 flow [2022-09-16 11:47:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:25,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:25,748 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:47:25,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1572205378, now seen corresponding path program 1 times [2022-09-16 11:47:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:25,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776823812] [2022-09-16 11:47:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:25,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:25,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776823812] [2022-09-16 11:47:25,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776823812] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:25,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:25,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522601068] [2022-09-16 11:47:25,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:25,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:25,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:25,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:25,798 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:25,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1001 transitions, 2394 flow. Second operand has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:25,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:25,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:25,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:27,217 INFO L130 PetriNetUnfolder]: 364/4348 cut-off events. [2022-09-16 11:47:27,217 INFO L131 PetriNetUnfolder]: For 177/1939 co-relation queries the response was YES. [2022-09-16 11:47:27,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 4348 events. 364/4348 cut-off events. For 177/1939 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 41199 event pairs, 72 based on Foata normal form. 14/3736 useless extension candidates. Maximal degree in co-relation 4892. Up to 214 conditions per place. [2022-09-16 11:47:27,546 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 58 selfloop transitions, 6 changer transitions 0/1019 dead transitions. [2022-09-16 11:47:27,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 1019 transitions, 2560 flow [2022-09-16 11:47:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3826 transitions. [2022-09-16 11:47:27,549 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9286407766990291 [2022-09-16 11:47:27,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3826 transitions. [2022-09-16 11:47:27,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3826 transitions. [2022-09-16 11:47:27,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:27,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3826 transitions. [2022-09-16 11:47:27,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 956.5) internal successors, (3826), 4 states have internal predecessors, (3826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:27,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:27,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:27,556 INFO L175 Difference]: Start difference. First operand has 940 places, 1001 transitions, 2394 flow. Second operand 4 states and 3826 transitions. [2022-09-16 11:47:27,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 1019 transitions, 2560 flow [2022-09-16 11:47:27,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1019 transitions, 2547 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:27,571 INFO L231 Difference]: Finished difference. Result has 936 places, 1001 transitions, 2397 flow [2022-09-16 11:47:27,572 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=932, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2397, PETRI_PLACES=936, PETRI_TRANSITIONS=1001} [2022-09-16 11:47:27,573 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 22 predicate places. [2022-09-16 11:47:27,573 INFO L495 AbstractCegarLoop]: Abstraction has has 936 places, 1001 transitions, 2397 flow [2022-09-16 11:47:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:27,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:27,574 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:27,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:27,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:27,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2139947799, now seen corresponding path program 1 times [2022-09-16 11:47:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:27,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608755279] [2022-09-16 11:47:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:27,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608755279] [2022-09-16 11:47:27,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608755279] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:27,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:27,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314983958] [2022-09-16 11:47:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:27,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:27,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:27,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 1001 transitions, 2397 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:27,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:27,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:27,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:30,529 INFO L130 PetriNetUnfolder]: 2567/10219 cut-off events. [2022-09-16 11:47:30,529 INFO L131 PetriNetUnfolder]: For 2157/3006 co-relation queries the response was YES. [2022-09-16 11:47:30,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15121 conditions, 10219 events. 2567/10219 cut-off events. For 2157/3006 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 131324 event pairs, 806 based on Foata normal form. 5/7588 useless extension candidates. Maximal degree in co-relation 14660. Up to 1722 conditions per place. [2022-09-16 11:47:30,717 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 57 selfloop transitions, 7 changer transitions 0/1014 dead transitions. [2022-09-16 11:47:30,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1014 transitions, 2557 flow [2022-09-16 11:47:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6645 transitions. [2022-09-16 11:47:30,720 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9216366158113731 [2022-09-16 11:47:30,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6645 transitions. [2022-09-16 11:47:30,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6645 transitions. [2022-09-16 11:47:30,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:30,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6645 transitions. [2022-09-16 11:47:30,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.2857142857143) internal successors, (6645), 7 states have internal predecessors, (6645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:30,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:30,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:30,731 INFO L175 Difference]: Start difference. First operand has 936 places, 1001 transitions, 2397 flow. Second operand 7 states and 6645 transitions. [2022-09-16 11:47:30,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1014 transitions, 2557 flow [2022-09-16 11:47:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 1014 transitions, 2553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:30,745 INFO L231 Difference]: Finished difference. Result has 940 places, 1000 transitions, 2405 flow [2022-09-16 11:47:30,745 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=940, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:30,746 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:47:30,746 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1000 transitions, 2405 flow [2022-09-16 11:47:30,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:30,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:30,747 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:30,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:47:30,747 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1913869224, now seen corresponding path program 1 times [2022-09-16 11:47:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:30,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636329200] [2022-09-16 11:47:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:30,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636329200] [2022-09-16 11:47:30,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636329200] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:30,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:30,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074224952] [2022-09-16 11:47:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:30,799 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:30,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1000 transitions, 2405 flow. Second operand has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:30,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:30,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:30,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:34,037 INFO L130 PetriNetUnfolder]: 2828/12108 cut-off events. [2022-09-16 11:47:34,037 INFO L131 PetriNetUnfolder]: For 2912/4247 co-relation queries the response was YES. [2022-09-16 11:47:34,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17975 conditions, 12108 events. 2828/12108 cut-off events. For 2912/4247 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 172158 event pairs, 1260 based on Foata normal form. 86/8669 useless extension candidates. Maximal degree in co-relation 17516. Up to 2639 conditions per place. [2022-09-16 11:47:34,274 INFO L137 encePairwiseOnDemand]: 1018/1030 looper letters, 62 selfloop transitions, 8 changer transitions 0/1020 dead transitions. [2022-09-16 11:47:34,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1020 transitions, 2587 flow [2022-09-16 11:47:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3834 transitions. [2022-09-16 11:47:34,276 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9305825242718446 [2022-09-16 11:47:34,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3834 transitions. [2022-09-16 11:47:34,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3834 transitions. [2022-09-16 11:47:34,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:34,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3834 transitions. [2022-09-16 11:47:34,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 958.5) internal successors, (3834), 4 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,281 INFO L175 Difference]: Start difference. First operand has 940 places, 1000 transitions, 2405 flow. Second operand 4 states and 3834 transitions. [2022-09-16 11:47:34,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1020 transitions, 2587 flow [2022-09-16 11:47:34,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 1020 transitions, 2577 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:34,296 INFO L231 Difference]: Finished difference. Result has 940 places, 1002 transitions, 2441 flow [2022-09-16 11:47:34,297 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=990, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2441, PETRI_PLACES=940, PETRI_TRANSITIONS=1002} [2022-09-16 11:47:34,297 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 26 predicate places. [2022-09-16 11:47:34,297 INFO L495 AbstractCegarLoop]: Abstraction has has 940 places, 1002 transitions, 2441 flow [2022-09-16 11:47:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.25) internal successors, (3769), 4 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:34,298 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:34,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:47:34,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1481341175, now seen corresponding path program 1 times [2022-09-16 11:47:34,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:34,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108749889] [2022-09-16 11:47:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:34,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108749889] [2022-09-16 11:47:34,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108749889] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:34,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987746750] [2022-09-16 11:47:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:34,368 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:34,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1002 transitions, 2441 flow. Second operand has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:34,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:34,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:39,410 INFO L130 PetriNetUnfolder]: 1629/17454 cut-off events. [2022-09-16 11:47:39,410 INFO L131 PetriNetUnfolder]: For 1589/3702 co-relation queries the response was YES. [2022-09-16 11:47:39,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21953 conditions, 17454 events. 1629/17454 cut-off events. For 1589/3702 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 244911 event pairs, 488 based on Foata normal form. 0/14582 useless extension candidates. Maximal degree in co-relation 21490. Up to 1160 conditions per place. [2022-09-16 11:47:39,796 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 59 selfloop transitions, 6 changer transitions 0/1017 dead transitions. [2022-09-16 11:47:39,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 1017 transitions, 2612 flow [2022-09-16 11:47:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6644 transitions. [2022-09-16 11:47:39,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.921497919556172 [2022-09-16 11:47:39,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6644 transitions. [2022-09-16 11:47:39,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6644 transitions. [2022-09-16 11:47:39,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:39,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6644 transitions. [2022-09-16 11:47:39,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 949.1428571428571) internal successors, (6644), 7 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,809 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,809 INFO L175 Difference]: Start difference. First operand has 940 places, 1002 transitions, 2441 flow. Second operand 7 states and 6644 transitions. [2022-09-16 11:47:39,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 1017 transitions, 2612 flow [2022-09-16 11:47:39,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 1017 transitions, 2612 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:47:39,833 INFO L231 Difference]: Finished difference. Result has 945 places, 1001 transitions, 2451 flow [2022-09-16 11:47:39,834 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=939, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2451, PETRI_PLACES=945, PETRI_TRANSITIONS=1001} [2022-09-16 11:47:39,835 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 31 predicate places. [2022-09-16 11:47:39,835 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 1001 transitions, 2451 flow [2022-09-16 11:47:39,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.0) internal successors, (5652), 6 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:39,836 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:47:39,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1869801706, now seen corresponding path program 1 times [2022-09-16 11:47:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:39,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070654631] [2022-09-16 11:47:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:39,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070654631] [2022-09-16 11:47:39,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070654631] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:39,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:39,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632664705] [2022-09-16 11:47:39,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:39,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:39,886 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:39,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 1001 transitions, 2451 flow. Second operand has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:39,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:39,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:39,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:42,413 INFO L130 PetriNetUnfolder]: 672/5208 cut-off events. [2022-09-16 11:47:42,413 INFO L131 PetriNetUnfolder]: For 890/3961 co-relation queries the response was YES. [2022-09-16 11:47:42,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 5208 events. 672/5208 cut-off events. For 890/3961 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 57329 event pairs, 192 based on Foata normal form. 18/4232 useless extension candidates. Maximal degree in co-relation 6646. Up to 640 conditions per place. [2022-09-16 11:47:42,866 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 62 selfloop transitions, 6 changer transitions 0/1018 dead transitions. [2022-09-16 11:47:42,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1018 transitions, 2620 flow [2022-09-16 11:47:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3830 transitions. [2022-09-16 11:47:42,869 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296116504854369 [2022-09-16 11:47:42,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3830 transitions. [2022-09-16 11:47:42,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3830 transitions. [2022-09-16 11:47:42,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:42,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3830 transitions. [2022-09-16 11:47:42,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.5) internal successors, (3830), 4 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,874 INFO L175 Difference]: Start difference. First operand has 945 places, 1001 transitions, 2451 flow. Second operand 4 states and 3830 transitions. [2022-09-16 11:47:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1018 transitions, 2620 flow [2022-09-16 11:47:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 1018 transitions, 2606 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:42,888 INFO L231 Difference]: Finished difference. Result has 943 places, 999 transitions, 2437 flow [2022-09-16 11:47:42,889 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2437, PETRI_PLACES=943, PETRI_TRANSITIONS=999} [2022-09-16 11:47:42,890 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 29 predicate places. [2022-09-16 11:47:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 943 places, 999 transitions, 2437 flow [2022-09-16 11:47:42,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.5) internal successors, (3770), 4 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:42,891 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:47:42,891 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -485240213, now seen corresponding path program 1 times [2022-09-16 11:47:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961306345] [2022-09-16 11:47:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:42,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961306345] [2022-09-16 11:47:42,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961306345] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:42,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:42,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:42,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530914760] [2022-09-16 11:47:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:42,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:42,976 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:47:42,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 999 transitions, 2437 flow. Second operand has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:42,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:42,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:47:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:44,688 INFO L130 PetriNetUnfolder]: 401/4069 cut-off events. [2022-09-16 11:47:44,688 INFO L131 PetriNetUnfolder]: For 271/3850 co-relation queries the response was YES. [2022-09-16 11:47:44,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5483 conditions, 4069 events. 401/4069 cut-off events. For 271/3850 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 39908 event pairs, 68 based on Foata normal form. 36/3586 useless extension candidates. Maximal degree in co-relation 5086. Up to 198 conditions per place. [2022-09-16 11:47:44,876 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 69 selfloop transitions, 12 changer transitions 0/1024 dead transitions. [2022-09-16 11:47:44,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 1024 transitions, 2671 flow [2022-09-16 11:47:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:47:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:47:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9382 transitions. [2022-09-16 11:47:44,881 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.910873786407767 [2022-09-16 11:47:44,881 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9382 transitions. [2022-09-16 11:47:44,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9382 transitions. [2022-09-16 11:47:44,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:44,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9382 transitions. [2022-09-16 11:47:44,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.2) internal successors, (9382), 10 states have internal predecessors, (9382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,895 INFO L175 Difference]: Start difference. First operand has 943 places, 999 transitions, 2437 flow. Second operand 10 states and 9382 transitions. [2022-09-16 11:47:44,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 1024 transitions, 2671 flow [2022-09-16 11:47:44,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 950 places, 1024 transitions, 2661 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:47:44,909 INFO L231 Difference]: Finished difference. Result has 952 places, 1000 transitions, 2463 flow [2022-09-16 11:47:44,910 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=952, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:44,910 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 38 predicate places. [2022-09-16 11:47:44,911 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 1000 transitions, 2463 flow [2022-09-16 11:47:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:44,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:44,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:47:44,912 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:44,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2129280934, now seen corresponding path program 1 times [2022-09-16 11:47:44,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:44,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302963133] [2022-09-16 11:47:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:44,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:44,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:44,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302963133] [2022-09-16 11:47:44,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302963133] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:44,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:44,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320394623] [2022-09-16 11:47:44,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:44,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:44,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:44,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 1000 transitions, 2463 flow. Second operand has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:44,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:44,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:44,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:48,585 INFO L130 PetriNetUnfolder]: 1536/10106 cut-off events. [2022-09-16 11:47:48,585 INFO L131 PetriNetUnfolder]: For 1238/3471 co-relation queries the response was YES. [2022-09-16 11:47:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13758 conditions, 10106 events. 1536/10106 cut-off events. For 1238/3471 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 127358 event pairs, 679 based on Foata normal form. 3/8353 useless extension candidates. Maximal degree in co-relation 13290. Up to 1232 conditions per place. [2022-09-16 11:47:49,017 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 50 selfloop transitions, 6 changer transitions 0/1009 dead transitions. [2022-09-16 11:47:49,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 1009 transitions, 2603 flow [2022-09-16 11:47:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6637 transitions. [2022-09-16 11:47:49,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9205270457697642 [2022-09-16 11:47:49,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6637 transitions. [2022-09-16 11:47:49,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6637 transitions. [2022-09-16 11:47:49,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:49,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6637 transitions. [2022-09-16 11:47:49,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.1428571428571) internal successors, (6637), 7 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,029 INFO L175 Difference]: Start difference. First operand has 952 places, 1000 transitions, 2463 flow. Second operand 7 states and 6637 transitions. [2022-09-16 11:47:49,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 1009 transitions, 2603 flow [2022-09-16 11:47:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 953 places, 1009 transitions, 2589 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:49,045 INFO L231 Difference]: Finished difference. Result has 953 places, 999 transitions, 2459 flow [2022-09-16 11:47:49,046 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=953, PETRI_TRANSITIONS=999} [2022-09-16 11:47:49,046 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 39 predicate places. [2022-09-16 11:47:49,046 INFO L495 AbstractCegarLoop]: Abstraction has has 953 places, 999 transitions, 2459 flow [2022-09-16 11:47:49,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:49,047 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:49,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:47:49,047 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2137425256, now seen corresponding path program 1 times [2022-09-16 11:47:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:49,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34464682] [2022-09-16 11:47:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:49,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:49,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34464682] [2022-09-16 11:47:49,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34464682] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:49,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:49,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:47:49,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049118707] [2022-09-16 11:47:49,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:47:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:47:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:47:49,127 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:47:49,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 999 transitions, 2459 flow. Second operand has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:49,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:49,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:47:49,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:50,759 INFO L130 PetriNetUnfolder]: 371/4028 cut-off events. [2022-09-16 11:47:50,760 INFO L131 PetriNetUnfolder]: For 288/3447 co-relation queries the response was YES. [2022-09-16 11:47:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5412 conditions, 4028 events. 371/4028 cut-off events. For 288/3447 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 39110 event pairs, 71 based on Foata normal form. 36/3556 useless extension candidates. Maximal degree in co-relation 5013. Up to 184 conditions per place. [2022-09-16 11:47:51,051 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 71 selfloop transitions, 13 changer transitions 0/1026 dead transitions. [2022-09-16 11:47:51,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 1026 transitions, 2710 flow [2022-09-16 11:47:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:47:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:47:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9384 transitions. [2022-09-16 11:47:51,057 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9110679611650485 [2022-09-16 11:47:51,057 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9384 transitions. [2022-09-16 11:47:51,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9384 transitions. [2022-09-16 11:47:51,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:51,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9384 transitions. [2022-09-16 11:47:51,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.4) internal successors, (9384), 10 states have internal predecessors, (9384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,070 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,070 INFO L175 Difference]: Start difference. First operand has 953 places, 999 transitions, 2459 flow. Second operand 10 states and 9384 transitions. [2022-09-16 11:47:51,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 1026 transitions, 2710 flow [2022-09-16 11:47:51,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 958 places, 1026 transitions, 2700 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:47:51,084 INFO L231 Difference]: Finished difference. Result has 960 places, 1000 transitions, 2487 flow [2022-09-16 11:47:51,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=986, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=960, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:51,085 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 46 predicate places. [2022-09-16 11:47:51,086 INFO L495 AbstractCegarLoop]: Abstraction has has 960 places, 1000 transitions, 2487 flow [2022-09-16 11:47:51,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:51,087 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:47:51,087 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2085038349, now seen corresponding path program 1 times [2022-09-16 11:47:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:51,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641087600] [2022-09-16 11:47:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:51,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:51,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:51,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641087600] [2022-09-16 11:47:51,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641087600] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:51,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:51,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188832555] [2022-09-16 11:47:51,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:51,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:51,144 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:51,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 1000 transitions, 2487 flow. Second operand has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:51,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:51,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:53,904 INFO L130 PetriNetUnfolder]: 712/5217 cut-off events. [2022-09-16 11:47:53,905 INFO L131 PetriNetUnfolder]: For 735/3925 co-relation queries the response was YES. [2022-09-16 11:47:54,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 5217 events. 712/5217 cut-off events. For 735/3925 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 58184 event pairs, 288 based on Foata normal form. 18/4232 useless extension candidates. Maximal degree in co-relation 6776. Up to 658 conditions per place. [2022-09-16 11:47:54,163 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 57 selfloop transitions, 6 changer transitions 0/1017 dead transitions. [2022-09-16 11:47:54,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 1017 transitions, 2649 flow [2022-09-16 11:47:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:47:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:47:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3825 transitions. [2022-09-16 11:47:54,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9283980582524272 [2022-09-16 11:47:54,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3825 transitions. [2022-09-16 11:47:54,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3825 transitions. [2022-09-16 11:47:54,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:54,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3825 transitions. [2022-09-16 11:47:54,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 956.25) internal successors, (3825), 4 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,170 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,170 INFO L175 Difference]: Start difference. First operand has 960 places, 1000 transitions, 2487 flow. Second operand 4 states and 3825 transitions. [2022-09-16 11:47:54,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 1017 transitions, 2649 flow [2022-09-16 11:47:54,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1017 transitions, 2630 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:54,183 INFO L231 Difference]: Finished difference. Result has 956 places, 1000 transitions, 2485 flow [2022-09-16 11:47:54,184 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=952, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=992, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2485, PETRI_PLACES=956, PETRI_TRANSITIONS=1000} [2022-09-16 11:47:54,184 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 42 predicate places. [2022-09-16 11:47:54,184 INFO L495 AbstractCegarLoop]: Abstraction has has 956 places, 1000 transitions, 2485 flow [2022-09-16 11:47:54,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:54,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:54,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:47:54,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2023679694, now seen corresponding path program 1 times [2022-09-16 11:47:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642907096] [2022-09-16 11:47:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642907096] [2022-09-16 11:47:54,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642907096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:54,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:54,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:54,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136667710] [2022-09-16 11:47:54,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:54,253 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:54,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 1000 transitions, 2485 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:54,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:54,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:54,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:56,284 INFO L130 PetriNetUnfolder]: 488/6186 cut-off events. [2022-09-16 11:47:56,284 INFO L131 PetriNetUnfolder]: For 335/912 co-relation queries the response was YES. [2022-09-16 11:47:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 6186 events. 488/6186 cut-off events. For 335/912 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 68132 event pairs, 120 based on Foata normal form. 12/5412 useless extension candidates. Maximal degree in co-relation 7443. Up to 280 conditions per place. [2022-09-16 11:47:56,457 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 48 selfloop transitions, 5 changer transitions 0/1007 dead transitions. [2022-09-16 11:47:56,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 1007 transitions, 2613 flow [2022-09-16 11:47:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:47:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:47:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5692 transitions. [2022-09-16 11:47:56,460 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9210355987055017 [2022-09-16 11:47:56,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5692 transitions. [2022-09-16 11:47:56,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5692 transitions. [2022-09-16 11:47:56,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:56,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5692 transitions. [2022-09-16 11:47:56,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 948.6666666666666) internal successors, (5692), 6 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,467 INFO L175 Difference]: Start difference. First operand has 956 places, 1000 transitions, 2485 flow. Second operand 6 states and 5692 transitions. [2022-09-16 11:47:56,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 1007 transitions, 2613 flow [2022-09-16 11:47:56,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 1007 transitions, 2609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:56,481 INFO L231 Difference]: Finished difference. Result has 959 places, 999 transitions, 2489 flow [2022-09-16 11:47:56,481 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=954, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2489, PETRI_PLACES=959, PETRI_TRANSITIONS=999} [2022-09-16 11:47:56,482 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 45 predicate places. [2022-09-16 11:47:56,482 INFO L495 AbstractCegarLoop]: Abstraction has has 959 places, 999 transitions, 2489 flow [2022-09-16 11:47:56,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:56,483 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:56,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:47:56,483 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash 783692175, now seen corresponding path program 1 times [2022-09-16 11:47:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:56,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006527053] [2022-09-16 11:47:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:56,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006527053] [2022-09-16 11:47:56,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006527053] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:56,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:56,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973053183] [2022-09-16 11:47:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:56,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:56,554 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:47:56,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 999 transitions, 2489 flow. Second operand has 6 states, 6 states have (on average 904.0) internal successors, (5424), 6 states have internal predecessors, (5424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:56,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:56,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:47:56,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:57,728 INFO L130 PetriNetUnfolder]: 346/2518 cut-off events. [2022-09-16 11:47:57,728 INFO L131 PetriNetUnfolder]: For 226/1775 co-relation queries the response was YES. [2022-09-16 11:47:57,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 2518 events. 346/2518 cut-off events. For 226/1775 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20393 event pairs, 152 based on Foata normal form. 33/2280 useless extension candidates. Maximal degree in co-relation 3951. Up to 392 conditions per place. [2022-09-16 11:47:57,821 INFO L137 encePairwiseOnDemand]: 1010/1030 looper letters, 91 selfloop transitions, 18 changer transitions 0/1021 dead transitions. [2022-09-16 11:47:57,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 1021 transitions, 2767 flow [2022-09-16 11:47:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6410 transitions. [2022-09-16 11:47:57,824 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8890429958391124 [2022-09-16 11:47:57,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6410 transitions. [2022-09-16 11:47:57,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6410 transitions. [2022-09-16 11:47:57,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:57,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6410 transitions. [2022-09-16 11:47:57,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 915.7142857142857) internal successors, (6410), 7 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:57,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:57,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:57,832 INFO L175 Difference]: Start difference. First operand has 959 places, 999 transitions, 2489 flow. Second operand 7 states and 6410 transitions. [2022-09-16 11:47:57,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 1021 transitions, 2767 flow [2022-09-16 11:47:57,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 1021 transitions, 2756 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:47:57,844 INFO L231 Difference]: Finished difference. Result has 964 places, 1007 transitions, 2577 flow [2022-09-16 11:47:57,845 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=953, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=980, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2577, PETRI_PLACES=964, PETRI_TRANSITIONS=1007} [2022-09-16 11:47:57,845 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 50 predicate places. [2022-09-16 11:47:57,845 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 1007 transitions, 2577 flow [2022-09-16 11:47:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.0) internal successors, (5424), 6 states have internal predecessors, (5424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:57,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:57,846 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:57,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:47:57,846 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 588802326, now seen corresponding path program 1 times [2022-09-16 11:47:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:57,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594438772] [2022-09-16 11:47:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594438772] [2022-09-16 11:47:57,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594438772] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:57,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:57,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:47:57,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936043978] [2022-09-16 11:47:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:57,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:47:57,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:47:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:47:57,924 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:47:57,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 1007 transitions, 2577 flow. Second operand has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:57,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:57,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:47:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:59,014 INFO L130 PetriNetUnfolder]: 330/2496 cut-off events. [2022-09-16 11:47:59,014 INFO L131 PetriNetUnfolder]: For 319/1782 co-relation queries the response was YES. [2022-09-16 11:47:59,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 2496 events. 330/2496 cut-off events. For 319/1782 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20147 event pairs, 132 based on Foata normal form. 33/2309 useless extension candidates. Maximal degree in co-relation 4063. Up to 342 conditions per place. [2022-09-16 11:47:59,140 INFO L137 encePairwiseOnDemand]: 1009/1030 looper letters, 111 selfloop transitions, 21 changer transitions 0/1044 dead transitions. [2022-09-16 11:47:59,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 1044 transitions, 2976 flow [2022-09-16 11:47:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:47:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:47:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6424 transitions. [2022-09-16 11:47:59,145 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8909847434119279 [2022-09-16 11:47:59,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6424 transitions. [2022-09-16 11:47:59,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6424 transitions. [2022-09-16 11:47:59,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:59,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6424 transitions. [2022-09-16 11:47:59,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 917.7142857142857) internal successors, (6424), 7 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,153 INFO L175 Difference]: Start difference. First operand has 964 places, 1007 transitions, 2577 flow. Second operand 7 states and 6424 transitions. [2022-09-16 11:47:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 1044 transitions, 2976 flow [2022-09-16 11:47:59,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 968 places, 1044 transitions, 2974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:47:59,166 INFO L231 Difference]: Finished difference. Result has 973 places, 1018 transitions, 2711 flow [2022-09-16 11:47:59,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=985, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2711, PETRI_PLACES=973, PETRI_TRANSITIONS=1018} [2022-09-16 11:47:59,167 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 59 predicate places. [2022-09-16 11:47:59,167 INFO L495 AbstractCegarLoop]: Abstraction has has 973 places, 1018 transitions, 2711 flow [2022-09-16 11:47:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:59,168 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:47:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:47:59,168 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:47:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1042614259, now seen corresponding path program 1 times [2022-09-16 11:47:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:59,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889505631] [2022-09-16 11:47:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:47:59,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:59,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889505631] [2022-09-16 11:47:59,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889505631] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:47:59,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:47:59,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:47:59,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663174678] [2022-09-16 11:47:59,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:47:59,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:47:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:59,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:47:59,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:47:59,216 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:47:59,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 1018 transitions, 2711 flow. Second operand has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:59,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:59,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:47:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:03,084 INFO L130 PetriNetUnfolder]: 3633/15595 cut-off events. [2022-09-16 11:48:03,084 INFO L131 PetriNetUnfolder]: For 4907/6916 co-relation queries the response was YES. [2022-09-16 11:48:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24405 conditions, 15595 events. 3633/15595 cut-off events. For 4907/6916 co-relation queries the response was YES. Maximal size of possible extension queue 2694. Compared 238800 event pairs, 1344 based on Foata normal form. 114/11089 useless extension candidates. Maximal degree in co-relation 23935. Up to 3447 conditions per place. [2022-09-16 11:48:03,317 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 62 selfloop transitions, 6 changer transitions 0/1034 dead transitions. [2022-09-16 11:48:03,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 1034 transitions, 2875 flow [2022-09-16 11:48:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:48:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:48:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3830 transitions. [2022-09-16 11:48:03,320 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296116504854369 [2022-09-16 11:48:03,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3830 transitions. [2022-09-16 11:48:03,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3830 transitions. [2022-09-16 11:48:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:03,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3830 transitions. [2022-09-16 11:48:03,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 957.5) internal successors, (3830), 4 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,325 INFO L175 Difference]: Start difference. First operand has 973 places, 1018 transitions, 2711 flow. Second operand 4 states and 3830 transitions. [2022-09-16 11:48:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 1034 transitions, 2875 flow [2022-09-16 11:48:03,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 1034 transitions, 2871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:48:03,344 INFO L231 Difference]: Finished difference. Result has 975 places, 1016 transitions, 2707 flow [2022-09-16 11:48:03,345 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2707, PETRI_PLACES=975, PETRI_TRANSITIONS=1016} [2022-09-16 11:48:03,345 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 61 predicate places. [2022-09-16 11:48:03,345 INFO L495 AbstractCegarLoop]: Abstraction has has 975 places, 1016 transitions, 2707 flow [2022-09-16 11:48:03,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 942.75) internal successors, (3771), 4 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:03,346 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:03,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:48:03,346 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash -98789844, now seen corresponding path program 1 times [2022-09-16 11:48:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:03,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976544526] [2022-09-16 11:48:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:03,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976544526] [2022-09-16 11:48:03,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976544526] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:03,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:03,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:03,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71132081] [2022-09-16 11:48:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:03,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:03,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:03,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:48:03,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 975 places, 1016 transitions, 2707 flow. Second operand has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:03,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:03,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:48:03,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:08,336 INFO L130 PetriNetUnfolder]: 4189/19609 cut-off events. [2022-09-16 11:48:08,336 INFO L131 PetriNetUnfolder]: For 4406/5450 co-relation queries the response was YES. [2022-09-16 11:48:08,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29575 conditions, 19609 events. 4189/19609 cut-off events. For 4406/5450 co-relation queries the response was YES. Maximal size of possible extension queue 2196. Compared 294656 event pairs, 1428 based on Foata normal form. 13/14929 useless extension candidates. Maximal degree in co-relation 29100. Up to 3672 conditions per place. [2022-09-16 11:48:08,657 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 55 selfloop transitions, 6 changer transitions 0/1029 dead transitions. [2022-09-16 11:48:08,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 1029 transitions, 2861 flow [2022-09-16 11:48:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6642 transitions. [2022-09-16 11:48:08,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9212205270457697 [2022-09-16 11:48:08,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6642 transitions. [2022-09-16 11:48:08,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6642 transitions. [2022-09-16 11:48:08,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:08,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6642 transitions. [2022-09-16 11:48:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.8571428571429) internal successors, (6642), 7 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:08,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:08,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:08,668 INFO L175 Difference]: Start difference. First operand has 975 places, 1016 transitions, 2707 flow. Second operand 7 states and 6642 transitions. [2022-09-16 11:48:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 1029 transitions, 2861 flow [2022-09-16 11:48:08,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 978 places, 1029 transitions, 2851 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:08,691 INFO L231 Difference]: Finished difference. Result has 978 places, 1015 transitions, 2707 flow [2022-09-16 11:48:08,692 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2707, PETRI_PLACES=978, PETRI_TRANSITIONS=1015} [2022-09-16 11:48:08,696 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 64 predicate places. [2022-09-16 11:48:08,696 INFO L495 AbstractCegarLoop]: Abstraction has has 978 places, 1015 transitions, 2707 flow [2022-09-16 11:48:08,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.1666666666666) internal successors, (5653), 6 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:08,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:08,697 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-16 11:48:08,697 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2038699492, now seen corresponding path program 1 times [2022-09-16 11:48:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:08,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008322065] [2022-09-16 11:48:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:08,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008322065] [2022-09-16 11:48:08,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008322065] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:08,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:08,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656469560] [2022-09-16 11:48:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:08,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:48:08,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 978 places, 1015 transitions, 2707 flow. Second operand has 6 states, 6 states have (on average 942.5) internal successors, (5655), 6 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:08,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:08,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:48:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:13,882 INFO L130 PetriNetUnfolder]: 4118/19473 cut-off events. [2022-09-16 11:48:13,883 INFO L131 PetriNetUnfolder]: For 4464/5784 co-relation queries the response was YES. [2022-09-16 11:48:14,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29241 conditions, 19473 events. 4118/19473 cut-off events. For 4464/5784 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 296386 event pairs, 1996 based on Foata normal form. 7/14901 useless extension candidates. Maximal degree in co-relation 28763. Up to 3887 conditions per place. [2022-09-16 11:48:14,164 INFO L137 encePairwiseOnDemand]: 1023/1030 looper letters, 49 selfloop transitions, 6 changer transitions 0/1023 dead transitions. [2022-09-16 11:48:14,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 983 places, 1023 transitions, 2839 flow [2022-09-16 11:48:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6636 transitions. [2022-09-16 11:48:14,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.920388349514563 [2022-09-16 11:48:14,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6636 transitions. [2022-09-16 11:48:14,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6636 transitions. [2022-09-16 11:48:14,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:14,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6636 transitions. [2022-09-16 11:48:14,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 948.0) internal successors, (6636), 7 states have internal predecessors, (6636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:14,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:14,175 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:14,175 INFO L175 Difference]: Start difference. First operand has 978 places, 1015 transitions, 2707 flow. Second operand 7 states and 6636 transitions. [2022-09-16 11:48:14,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 983 places, 1023 transitions, 2839 flow [2022-09-16 11:48:14,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 1023 transitions, 2829 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:48:14,197 INFO L231 Difference]: Finished difference. Result has 979 places, 1014 transitions, 2707 flow [2022-09-16 11:48:14,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=973, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1014, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1008, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2707, PETRI_PLACES=979, PETRI_TRANSITIONS=1014} [2022-09-16 11:48:14,199 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 65 predicate places. [2022-09-16 11:48:14,199 INFO L495 AbstractCegarLoop]: Abstraction has has 979 places, 1014 transitions, 2707 flow [2022-09-16 11:48:14,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.5) internal successors, (5655), 6 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:14,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:14,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:14,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-16 11:48:14,200 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1202184950, now seen corresponding path program 1 times [2022-09-16 11:48:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:14,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102953023] [2022-09-16 11:48:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:14,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102953023] [2022-09-16 11:48:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102953023] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:14,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220631759] [2022-09-16 11:48:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:14,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:14,317 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:48:14,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 1014 transitions, 2707 flow. Second operand has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:14,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:14,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:48:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:17,424 INFO L130 PetriNetUnfolder]: 965/6526 cut-off events. [2022-09-16 11:48:17,425 INFO L131 PetriNetUnfolder]: For 860/2235 co-relation queries the response was YES. [2022-09-16 11:48:17,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9506 conditions, 6526 events. 965/6526 cut-off events. For 860/2235 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 77074 event pairs, 222 based on Foata normal form. 3/5531 useless extension candidates. Maximal degree in co-relation 9028. Up to 532 conditions per place. [2022-09-16 11:48:17,772 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 67 selfloop transitions, 12 changer transitions 0/1037 dead transitions. [2022-09-16 11:48:17,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 1037 transitions, 2931 flow [2022-09-16 11:48:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:48:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:48:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9380 transitions. [2022-09-16 11:48:17,777 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9106796116504854 [2022-09-16 11:48:17,777 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9380 transitions. [2022-09-16 11:48:17,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9380 transitions. [2022-09-16 11:48:17,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:17,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9380 transitions. [2022-09-16 11:48:17,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.0) internal successors, (9380), 10 states have internal predecessors, (9380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:17,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:17,880 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:17,880 INFO L175 Difference]: Start difference. First operand has 979 places, 1014 transitions, 2707 flow. Second operand 10 states and 9380 transitions. [2022-09-16 11:48:17,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 988 places, 1037 transitions, 2931 flow [2022-09-16 11:48:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 984 places, 1037 transitions, 2921 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:48:17,895 INFO L231 Difference]: Finished difference. Result has 986 places, 1015 transitions, 2733 flow [2022-09-16 11:48:17,897 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1014, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1002, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2733, PETRI_PLACES=986, PETRI_TRANSITIONS=1015} [2022-09-16 11:48:17,897 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 72 predicate places. [2022-09-16 11:48:17,897 INFO L495 AbstractCegarLoop]: Abstraction has has 986 places, 1015 transitions, 2733 flow [2022-09-16 11:48:17,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:17,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:17,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-16 11:48:17,898 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1138695350, now seen corresponding path program 1 times [2022-09-16 11:48:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:17,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737919625] [2022-09-16 11:48:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:17,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:17,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737919625] [2022-09-16 11:48:17,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737919625] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:17,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:17,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:48:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990950148] [2022-09-16 11:48:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:48:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:48:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:48:17,947 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:48:17,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 1015 transitions, 2733 flow. Second operand has 3 states, 3 states have (on average 980.3333333333334) internal successors, (2941), 3 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:17,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:17,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:48:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:19,077 INFO L130 PetriNetUnfolder]: 122/2789 cut-off events. [2022-09-16 11:48:19,077 INFO L131 PetriNetUnfolder]: For 277/305 co-relation queries the response was YES. [2022-09-16 11:48:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 2789 events. 122/2789 cut-off events. For 277/305 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 21846 event pairs, 10 based on Foata normal form. 0/2488 useless extension candidates. Maximal degree in co-relation 3412. Up to 94 conditions per place. [2022-09-16 11:48:19,201 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1019 dead transitions. [2022-09-16 11:48:19,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 1019 transitions, 2776 flow [2022-09-16 11:48:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:48:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:48:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:48:19,203 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:48:19,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:48:19,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:48:19,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:19,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:48:19,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:19,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:19,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:19,207 INFO L175 Difference]: Start difference. First operand has 986 places, 1015 transitions, 2733 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:48:19,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 988 places, 1019 transitions, 2776 flow [2022-09-16 11:48:19,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 984 places, 1019 transitions, 2762 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:48:19,220 INFO L231 Difference]: Finished difference. Result has 986 places, 1017 transitions, 2741 flow [2022-09-16 11:48:19,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=982, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2741, PETRI_PLACES=986, PETRI_TRANSITIONS=1017} [2022-09-16 11:48:19,220 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 72 predicate places. [2022-09-16 11:48:19,220 INFO L495 AbstractCegarLoop]: Abstraction has has 986 places, 1017 transitions, 2741 flow [2022-09-16 11:48:19,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 980.3333333333334) internal successors, (2941), 3 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:19,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:19,221 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-16 11:48:19,221 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969282, now seen corresponding path program 1 times [2022-09-16 11:48:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:19,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396028509] [2022-09-16 11:48:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:19,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:19,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396028509] [2022-09-16 11:48:19,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396028509] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:19,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:19,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:19,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312260859] [2022-09-16 11:48:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:19,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:19,309 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:48:19,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 1017 transitions, 2741 flow. Second operand has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:19,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:19,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:48:19,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:22,356 INFO L130 PetriNetUnfolder]: 855/6398 cut-off events. [2022-09-16 11:48:22,356 INFO L131 PetriNetUnfolder]: For 842/2131 co-relation queries the response was YES. [2022-09-16 11:48:22,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9308 conditions, 6398 events. 855/6398 cut-off events. For 842/2131 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 73862 event pairs, 233 based on Foata normal form. 2/5487 useless extension candidates. Maximal degree in co-relation 9209. Up to 487 conditions per place. [2022-09-16 11:48:22,697 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 69 selfloop transitions, 13 changer transitions 0/1042 dead transitions. [2022-09-16 11:48:22,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 995 places, 1042 transitions, 2982 flow [2022-09-16 11:48:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:48:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:48:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9382 transitions. [2022-09-16 11:48:22,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.910873786407767 [2022-09-16 11:48:22,702 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9382 transitions. [2022-09-16 11:48:22,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9382 transitions. [2022-09-16 11:48:22,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:22,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9382 transitions. [2022-09-16 11:48:22,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.2) internal successors, (9382), 10 states have internal predecessors, (9382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:22,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:22,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:22,715 INFO L175 Difference]: Start difference. First operand has 986 places, 1017 transitions, 2741 flow. Second operand 10 states and 9382 transitions. [2022-09-16 11:48:22,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 995 places, 1042 transitions, 2982 flow [2022-09-16 11:48:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 993 places, 1042 transitions, 2976 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:22,731 INFO L231 Difference]: Finished difference. Result has 995 places, 1018 transitions, 2773 flow [2022-09-16 11:48:22,732 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=984, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1004, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=995, PETRI_TRANSITIONS=1018} [2022-09-16 11:48:22,732 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 81 predicate places. [2022-09-16 11:48:22,732 INFO L495 AbstractCegarLoop]: Abstraction has has 995 places, 1018 transitions, 2773 flow [2022-09-16 11:48:22,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:22,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:22,733 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:22,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-16 11:48:22,734 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 935626731, now seen corresponding path program 1 times [2022-09-16 11:48:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:22,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559751045] [2022-09-16 11:48:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:22,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:22,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559751045] [2022-09-16 11:48:22,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559751045] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:22,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:22,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:48:22,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859421883] [2022-09-16 11:48:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:22,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:48:22,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:48:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:48:22,899 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:48:22,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 1018 transitions, 2773 flow. Second operand has 4 states, 4 states have (on average 943.0) internal successors, (3772), 4 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:22,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:22,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:48:22,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:27,539 INFO L130 PetriNetUnfolder]: 4136/17295 cut-off events. [2022-09-16 11:48:27,539 INFO L131 PetriNetUnfolder]: For 4440/6576 co-relation queries the response was YES. [2022-09-16 11:48:27,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27285 conditions, 17295 events. 4136/17295 cut-off events. For 4440/6576 co-relation queries the response was YES. Maximal size of possible extension queue 3260. Compared 269978 event pairs, 2016 based on Foata normal form. 120/12264 useless extension candidates. Maximal degree in co-relation 27176. Up to 4128 conditions per place. [2022-09-16 11:48:27,804 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 56 selfloop transitions, 6 changer transitions 0/1034 dead transitions. [2022-09-16 11:48:27,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 995 places, 1034 transitions, 2928 flow [2022-09-16 11:48:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:48:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:48:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3824 transitions. [2022-09-16 11:48:27,806 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9281553398058252 [2022-09-16 11:48:27,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3824 transitions. [2022-09-16 11:48:27,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3824 transitions. [2022-09-16 11:48:27,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:27,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3824 transitions. [2022-09-16 11:48:27,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:27,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:27,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1030.0) internal successors, (5150), 5 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:27,811 INFO L175 Difference]: Start difference. First operand has 995 places, 1018 transitions, 2773 flow. Second operand 4 states and 3824 transitions. [2022-09-16 11:48:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 995 places, 1034 transitions, 2928 flow [2022-09-16 11:48:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 990 places, 1034 transitions, 2909 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:27,828 INFO L231 Difference]: Finished difference. Result has 991 places, 1018 transitions, 2771 flow [2022-09-16 11:48:27,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=987, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2771, PETRI_PLACES=991, PETRI_TRANSITIONS=1018} [2022-09-16 11:48:27,829 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 77 predicate places. [2022-09-16 11:48:27,829 INFO L495 AbstractCegarLoop]: Abstraction has has 991 places, 1018 transitions, 2771 flow [2022-09-16 11:48:27,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 943.0) internal successors, (3772), 4 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:27,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:27,830 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:27,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-16 11:48:27,830 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash 511123068, now seen corresponding path program 1 times [2022-09-16 11:48:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:27,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721696970] [2022-09-16 11:48:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:27,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:27,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721696970] [2022-09-16 11:48:27,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721696970] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:27,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:27,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:27,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967055380] [2022-09-16 11:48:27,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:27,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:27,911 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:48:27,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 1018 transitions, 2771 flow. Second operand has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:27,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:27,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:48:27,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:29,704 INFO L130 PetriNetUnfolder]: 362/4058 cut-off events. [2022-09-16 11:48:29,704 INFO L131 PetriNetUnfolder]: For 576/2844 co-relation queries the response was YES. [2022-09-16 11:48:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6153 conditions, 4058 events. 362/4058 cut-off events. For 576/2844 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 40190 event pairs, 59 based on Foata normal form. 44/3702 useless extension candidates. Maximal degree in co-relation 6043. Up to 191 conditions per place. [2022-09-16 11:48:29,850 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 67 selfloop transitions, 13 changer transitions 0/1038 dead transitions. [2022-09-16 11:48:29,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 1038 transitions, 2981 flow [2022-09-16 11:48:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:48:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:48:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9378 transitions. [2022-09-16 11:48:29,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9104854368932039 [2022-09-16 11:48:29,855 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9378 transitions. [2022-09-16 11:48:29,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9378 transitions. [2022-09-16 11:48:29,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:29,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9378 transitions. [2022-09-16 11:48:29,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.8) internal successors, (9378), 10 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,865 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,865 INFO L175 Difference]: Start difference. First operand has 991 places, 1018 transitions, 2771 flow. Second operand 10 states and 9378 transitions. [2022-09-16 11:48:29,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 1038 transitions, 2981 flow [2022-09-16 11:48:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 997 places, 1038 transitions, 2973 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:29,880 INFO L231 Difference]: Finished difference. Result has 997 places, 1016 transitions, 2773 flow [2022-09-16 11:48:29,880 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=988, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=997, PETRI_TRANSITIONS=1016} [2022-09-16 11:48:29,881 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 83 predicate places. [2022-09-16 11:48:29,881 INFO L495 AbstractCegarLoop]: Abstraction has has 997 places, 1016 transitions, 2773 flow [2022-09-16 11:48:29,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.0) internal successors, (7456), 8 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:29,882 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-16 11:48:29,882 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash -931298086, now seen corresponding path program 1 times [2022-09-16 11:48:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:29,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909853548] [2022-09-16 11:48:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909853548] [2022-09-16 11:48:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909853548] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:29,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:48:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393211830] [2022-09-16 11:48:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:29,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:48:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:48:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:48:29,948 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1030 [2022-09-16 11:48:29,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 1016 transitions, 2773 flow. Second operand has 3 states, 3 states have (on average 964.0) internal successors, (2892), 3 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:29,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:29,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1030 [2022-09-16 11:48:29,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:35,738 INFO L130 PetriNetUnfolder]: 661/14341 cut-off events. [2022-09-16 11:48:35,739 INFO L131 PetriNetUnfolder]: For 493/853 co-relation queries the response was YES. [2022-09-16 11:48:36,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 14341 events. 661/14341 cut-off events. For 493/853 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 172697 event pairs, 43 based on Foata normal form. 0/12584 useless extension candidates. Maximal degree in co-relation 16985. Up to 185 conditions per place. [2022-09-16 11:48:36,334 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 48 selfloop transitions, 4 changer transitions 0/1038 dead transitions. [2022-09-16 11:48:36,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 1038 transitions, 2926 flow [2022-09-16 11:48:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:48:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:48:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2939 transitions. [2022-09-16 11:48:36,337 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9511326860841424 [2022-09-16 11:48:36,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2939 transitions. [2022-09-16 11:48:36,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2939 transitions. [2022-09-16 11:48:36,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:36,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2939 transitions. [2022-09-16 11:48:36,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 979.6666666666666) internal successors, (2939), 3 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:36,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:36,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:36,341 INFO L175 Difference]: Start difference. First operand has 997 places, 1016 transitions, 2773 flow. Second operand 3 states and 2939 transitions. [2022-09-16 11:48:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 1038 transitions, 2926 flow [2022-09-16 11:48:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 992 places, 1038 transitions, 2899 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:48:36,361 INFO L231 Difference]: Finished difference. Result has 993 places, 1017 transitions, 2770 flow [2022-09-16 11:48:36,362 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=990, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2770, PETRI_PLACES=993, PETRI_TRANSITIONS=1017} [2022-09-16 11:48:36,362 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 79 predicate places. [2022-09-16 11:48:36,362 INFO L495 AbstractCegarLoop]: Abstraction has has 993 places, 1017 transitions, 2770 flow [2022-09-16 11:48:36,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 964.0) internal successors, (2892), 3 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:36,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:36,363 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-16 11:48:36,363 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1725221371, now seen corresponding path program 1 times [2022-09-16 11:48:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:36,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147641777] [2022-09-16 11:48:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147641777] [2022-09-16 11:48:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147641777] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:36,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:36,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331387632] [2022-09-16 11:48:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:36,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:48:36,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 993 places, 1017 transitions, 2770 flow. Second operand has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:36,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:36,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:48:36,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:41,224 INFO L130 PetriNetUnfolder]: 1836/7736 cut-off events. [2022-09-16 11:48:41,224 INFO L131 PetriNetUnfolder]: For 2033/3231 co-relation queries the response was YES. [2022-09-16 11:48:41,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12848 conditions, 7736 events. 1836/7736 cut-off events. For 2033/3231 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 92340 event pairs, 912 based on Foata normal form. 14/5832 useless extension candidates. Maximal degree in co-relation 12663. Up to 1926 conditions per place. [2022-09-16 11:48:41,780 INFO L137 encePairwiseOnDemand]: 1010/1030 looper letters, 91 selfloop transitions, 18 changer transitions 0/1038 dead transitions. [2022-09-16 11:48:41,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 1038 transitions, 3045 flow [2022-09-16 11:48:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6410 transitions. [2022-09-16 11:48:41,783 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8890429958391124 [2022-09-16 11:48:41,783 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6410 transitions. [2022-09-16 11:48:41,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6410 transitions. [2022-09-16 11:48:41,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:41,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6410 transitions. [2022-09-16 11:48:41,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 915.7142857142857) internal successors, (6410), 7 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:41,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:41,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:41,791 INFO L175 Difference]: Start difference. First operand has 993 places, 1017 transitions, 2770 flow. Second operand 7 states and 6410 transitions. [2022-09-16 11:48:41,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 998 places, 1038 transitions, 3045 flow [2022-09-16 11:48:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 1038 transitions, 3039 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:41,808 INFO L231 Difference]: Finished difference. Result has 1001 places, 1025 transitions, 2863 flow [2022-09-16 11:48:41,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=990, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=998, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2863, PETRI_PLACES=1001, PETRI_TRANSITIONS=1025} [2022-09-16 11:48:41,808 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 87 predicate places. [2022-09-16 11:48:41,809 INFO L495 AbstractCegarLoop]: Abstraction has has 1001 places, 1025 transitions, 2863 flow [2022-09-16 11:48:41,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.1666666666666) internal successors, (5425), 6 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:41,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:41,809 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:41,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-16 11:48:41,810 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:41,810 INFO L85 PathProgramCache]: Analyzing trace with hash -485233852, now seen corresponding path program 1 times [2022-09-16 11:48:41,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:41,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791375647] [2022-09-16 11:48:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:41,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791375647] [2022-09-16 11:48:42,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791375647] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:42,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:42,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277683010] [2022-09-16 11:48:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:42,007 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:48:42,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 1025 transitions, 2863 flow. Second operand has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:42,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:42,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:48:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:49,791 INFO L130 PetriNetUnfolder]: 1873/22418 cut-off events. [2022-09-16 11:48:49,791 INFO L131 PetriNetUnfolder]: For 2602/5838 co-relation queries the response was YES. [2022-09-16 11:48:50,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31481 conditions, 22418 events. 1873/22418 cut-off events. For 2602/5838 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 321203 event pairs, 825 based on Foata normal form. 0/19606 useless extension candidates. Maximal degree in co-relation 30996. Up to 1539 conditions per place. [2022-09-16 11:48:50,419 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 47 selfloop transitions, 5 changer transitions 0/1031 dead transitions. [2022-09-16 11:48:50,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1005 places, 1031 transitions, 2986 flow [2022-09-16 11:48:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:48:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:48:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5690 transitions. [2022-09-16 11:48:50,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9207119741100324 [2022-09-16 11:48:50,422 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5690 transitions. [2022-09-16 11:48:50,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5690 transitions. [2022-09-16 11:48:50,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:50,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5690 transitions. [2022-09-16 11:48:50,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 948.3333333333334) internal successors, (5690), 6 states have internal predecessors, (5690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:50,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:50,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:50,429 INFO L175 Difference]: Start difference. First operand has 1001 places, 1025 transitions, 2863 flow. Second operand 6 states and 5690 transitions. [2022-09-16 11:48:50,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1005 places, 1031 transitions, 2986 flow [2022-09-16 11:48:50,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1005 places, 1031 transitions, 2986 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:48:50,486 INFO L231 Difference]: Finished difference. Result has 1005 places, 1024 transitions, 2871 flow [2022-09-16 11:48:50,487 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2871, PETRI_PLACES=1005, PETRI_TRANSITIONS=1024} [2022-09-16 11:48:50,487 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 91 predicate places. [2022-09-16 11:48:50,487 INFO L495 AbstractCegarLoop]: Abstraction has has 1005 places, 1024 transitions, 2871 flow [2022-09-16 11:48:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.3333333333334) internal successors, (5654), 6 states have internal predecessors, (5654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:50,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:50,488 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-16 11:48:50,488 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:50,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1335051366, now seen corresponding path program 1 times [2022-09-16 11:48:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:50,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894252843] [2022-09-16 11:48:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894252843] [2022-09-16 11:48:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894252843] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:50,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:50,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663423994] [2022-09-16 11:48:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:50,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:48:50,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 1024 transitions, 2871 flow. Second operand has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:50,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:50,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:48:50,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:52,927 INFO L130 PetriNetUnfolder]: 460/4826 cut-off events. [2022-09-16 11:48:52,928 INFO L131 PetriNetUnfolder]: For 718/3240 co-relation queries the response was YES. [2022-09-16 11:48:53,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7733 conditions, 4826 events. 460/4826 cut-off events. For 718/3240 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 47539 event pairs, 67 based on Foata normal form. 52/4469 useless extension candidates. Maximal degree in co-relation 7246. Up to 354 conditions per place. [2022-09-16 11:48:53,146 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 68 selfloop transitions, 13 changer transitions 0/1047 dead transitions. [2022-09-16 11:48:53,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 1047 transitions, 3105 flow [2022-09-16 11:48:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:48:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:48:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9379 transitions. [2022-09-16 11:48:53,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9105825242718446 [2022-09-16 11:48:53,150 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9379 transitions. [2022-09-16 11:48:53,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9379 transitions. [2022-09-16 11:48:53,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:53,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9379 transitions. [2022-09-16 11:48:53,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.9) internal successors, (9379), 10 states have internal predecessors, (9379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:53,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:53,257 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:53,257 INFO L175 Difference]: Start difference. First operand has 1005 places, 1024 transitions, 2871 flow. Second operand 10 states and 9379 transitions. [2022-09-16 11:48:53,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 1047 transitions, 3105 flow [2022-09-16 11:48:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1008 places, 1047 transitions, 3092 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:53,276 INFO L231 Difference]: Finished difference. Result has 1008 places, 1023 transitions, 2880 flow [2022-09-16 11:48:53,277 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=999, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=1008, PETRI_TRANSITIONS=1023} [2022-09-16 11:48:53,277 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 94 predicate places. [2022-09-16 11:48:53,277 INFO L495 AbstractCegarLoop]: Abstraction has has 1008 places, 1023 transitions, 2880 flow [2022-09-16 11:48:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:53,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:53,279 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-16 11:48:53,279 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 121893985, now seen corresponding path program 1 times [2022-09-16 11:48:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:53,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473688844] [2022-09-16 11:48:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:53,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473688844] [2022-09-16 11:48:53,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473688844] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:53,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:53,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709282362] [2022-09-16 11:48:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:53,357 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:48:53,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1008 places, 1023 transitions, 2880 flow. Second operand has 6 states, 6 states have (on average 904.3333333333334) internal successors, (5426), 6 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:53,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:53,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:48:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:58,028 INFO L130 PetriNetUnfolder]: 1728/7585 cut-off events. [2022-09-16 11:48:58,028 INFO L131 PetriNetUnfolder]: For 2344/3473 co-relation queries the response was YES. [2022-09-16 11:48:58,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 7585 events. 1728/7585 cut-off events. For 2344/3473 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 90060 event pairs, 792 based on Foata normal form. 15/6008 useless extension candidates. Maximal degree in co-relation 13180. Up to 1676 conditions per place. [2022-09-16 11:48:58,656 INFO L137 encePairwiseOnDemand]: 1009/1030 looper letters, 110 selfloop transitions, 21 changer transitions 0/1059 dead transitions. [2022-09-16 11:48:58,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 1059 transitions, 3274 flow [2022-09-16 11:48:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6423 transitions. [2022-09-16 11:48:58,659 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8908460471567268 [2022-09-16 11:48:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6423 transitions. [2022-09-16 11:48:58,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6423 transitions. [2022-09-16 11:48:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:58,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6423 transitions. [2022-09-16 11:48:58,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 917.5714285714286) internal successors, (6423), 7 states have internal predecessors, (6423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:58,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:58,667 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:58,667 INFO L175 Difference]: Start difference. First operand has 1008 places, 1023 transitions, 2880 flow. Second operand 7 states and 6423 transitions. [2022-09-16 11:48:58,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 1059 transitions, 3274 flow [2022-09-16 11:48:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1005 places, 1059 transitions, 3245 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-09-16 11:48:58,693 INFO L231 Difference]: Finished difference. Result has 1010 places, 1034 transitions, 2987 flow [2022-09-16 11:48:58,694 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=999, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2987, PETRI_PLACES=1010, PETRI_TRANSITIONS=1034} [2022-09-16 11:48:58,694 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 96 predicate places. [2022-09-16 11:48:58,694 INFO L495 AbstractCegarLoop]: Abstraction has has 1010 places, 1034 transitions, 2987 flow [2022-09-16 11:48:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.3333333333334) internal successors, (5426), 6 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:58,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:58,695 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:58,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-16 11:48:58,695 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:48:58,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:58,695 INFO L85 PathProgramCache]: Analyzing trace with hash 905403156, now seen corresponding path program 1 times [2022-09-16 11:48:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:58,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253939925] [2022-09-16 11:48:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:48:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:58,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253939925] [2022-09-16 11:48:58,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253939925] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:58,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:58,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369408023] [2022-09-16 11:48:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:58,774 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:48:58,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1010 places, 1034 transitions, 2987 flow. Second operand has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:58,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:58,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:48:58,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:07,249 INFO L130 PetriNetUnfolder]: 6767/27721 cut-off events. [2022-09-16 11:49:07,249 INFO L131 PetriNetUnfolder]: For 7858/10933 co-relation queries the response was YES. [2022-09-16 11:49:07,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45486 conditions, 27721 events. 6767/27721 cut-off events. For 7858/10933 co-relation queries the response was YES. Maximal size of possible extension queue 3895. Compared 443270 event pairs, 1782 based on Foata normal form. 47/20114 useless extension candidates. Maximal degree in co-relation 44999. Up to 5852 conditions per place. [2022-09-16 11:49:07,984 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 65 selfloop transitions, 12 changer transitions 0/1055 dead transitions. [2022-09-16 11:49:07,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1019 places, 1055 transitions, 3195 flow [2022-09-16 11:49:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:49:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:49:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9378 transitions. [2022-09-16 11:49:07,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9104854368932039 [2022-09-16 11:49:07,989 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9378 transitions. [2022-09-16 11:49:07,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9378 transitions. [2022-09-16 11:49:07,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:07,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9378 transitions. [2022-09-16 11:49:07,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.8) internal successors, (9378), 10 states have internal predecessors, (9378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,000 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,000 INFO L175 Difference]: Start difference. First operand has 1010 places, 1034 transitions, 2987 flow. Second operand 10 states and 9378 transitions. [2022-09-16 11:49:08,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1019 places, 1055 transitions, 3195 flow [2022-09-16 11:49:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1019 places, 1055 transitions, 3195 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:49:08,047 INFO L231 Difference]: Finished difference. Result has 1021 places, 1035 transitions, 3023 flow [2022-09-16 11:49:08,047 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=1010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3023, PETRI_PLACES=1021, PETRI_TRANSITIONS=1035} [2022-09-16 11:49:08,048 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 107 predicate places. [2022-09-16 11:49:08,048 INFO L495 AbstractCegarLoop]: Abstraction has has 1021 places, 1035 transitions, 3023 flow [2022-09-16 11:49:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:08,049 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:08,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-16 11:49:08,049 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:49:08,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash 570133132, now seen corresponding path program 1 times [2022-09-16 11:49:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:08,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963038614] [2022-09-16 11:49:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:49:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963038614] [2022-09-16 11:49:08,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963038614] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:08,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:08,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:49:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730732527] [2022-09-16 11:49:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:49:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:49:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:49:08,093 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:49:08,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1021 places, 1035 transitions, 3023 flow. Second operand has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:08,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:08,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:49:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:10,881 INFO L130 PetriNetUnfolder]: 359/5154 cut-off events. [2022-09-16 11:49:10,881 INFO L131 PetriNetUnfolder]: For 719/996 co-relation queries the response was YES. [2022-09-16 11:49:11,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7509 conditions, 5154 events. 359/5154 cut-off events. For 719/996 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 43609 event pairs, 60 based on Foata normal form. 0/4645 useless extension candidates. Maximal degree in co-relation 7319. Up to 286 conditions per place. [2022-09-16 11:49:11,171 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1039 dead transitions. [2022-09-16 11:49:11,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1023 places, 1039 transitions, 3066 flow [2022-09-16 11:49:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:49:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:49:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:49:11,173 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:49:11,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:49:11,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:49:11,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:11,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:49:11,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,177 INFO L175 Difference]: Start difference. First operand has 1021 places, 1035 transitions, 3023 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:49:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1023 places, 1039 transitions, 3066 flow [2022-09-16 11:49:11,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1019 places, 1039 transitions, 3052 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:49:11,198 INFO L231 Difference]: Finished difference. Result has 1021 places, 1037 transitions, 3031 flow [2022-09-16 11:49:11,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3031, PETRI_PLACES=1021, PETRI_TRANSITIONS=1037} [2022-09-16 11:49:11,199 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 107 predicate places. [2022-09-16 11:49:11,199 INFO L495 AbstractCegarLoop]: Abstraction has has 1021 places, 1037 transitions, 3031 flow [2022-09-16 11:49:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:11,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-16 11:49:11,200 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:49:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:11,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1997270047, now seen corresponding path program 1 times [2022-09-16 11:49:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:11,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747388699] [2022-09-16 11:49:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:11,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:49:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:11,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747388699] [2022-09-16 11:49:11,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747388699] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:11,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:11,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:49:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056958873] [2022-09-16 11:49:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:49:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:49:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:49:11,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:49:11,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1021 places, 1037 transitions, 3031 flow. Second operand has 8 states, 8 states have (on average 932.375) internal successors, (7459), 8 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:11,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:11,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:49:11,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:20,170 INFO L130 PetriNetUnfolder]: 5877/26661 cut-off events. [2022-09-16 11:49:20,170 INFO L131 PetriNetUnfolder]: For 7434/10623 co-relation queries the response was YES. [2022-09-16 11:49:20,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44188 conditions, 26661 events. 5877/26661 cut-off events. For 7434/10623 co-relation queries the response was YES. Maximal size of possible extension queue 3292. Compared 421942 event pairs, 1871 based on Foata normal form. 41/20084 useless extension candidates. Maximal degree in co-relation 43977. Up to 5082 conditions per place. [2022-09-16 11:49:20,878 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 67 selfloop transitions, 13 changer transitions 0/1060 dead transitions. [2022-09-16 11:49:20,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1030 places, 1060 transitions, 3256 flow [2022-09-16 11:49:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:49:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:49:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9380 transitions. [2022-09-16 11:49:20,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9106796116504854 [2022-09-16 11:49:20,883 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9380 transitions. [2022-09-16 11:49:20,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9380 transitions. [2022-09-16 11:49:20,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:20,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9380 transitions. [2022-09-16 11:49:20,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 938.0) internal successors, (9380), 10 states have internal predecessors, (9380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:20,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:20,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:20,895 INFO L175 Difference]: Start difference. First operand has 1021 places, 1037 transitions, 3031 flow. Second operand 10 states and 9380 transitions. [2022-09-16 11:49:20,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1030 places, 1060 transitions, 3256 flow [2022-09-16 11:49:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 1060 transitions, 3250 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:49:21,043 INFO L231 Difference]: Finished difference. Result has 1030 places, 1038 transitions, 3063 flow [2022-09-16 11:49:21,044 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=1019, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1024, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3063, PETRI_PLACES=1030, PETRI_TRANSITIONS=1038} [2022-09-16 11:49:21,044 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 116 predicate places. [2022-09-16 11:49:21,044 INFO L495 AbstractCegarLoop]: Abstraction has has 1030 places, 1038 transitions, 3063 flow [2022-09-16 11:49:21,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.375) internal successors, (7459), 8 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:21,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:21,045 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:21,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-16 11:49:21,045 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:49:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1423331732, now seen corresponding path program 1 times [2022-09-16 11:49:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796821990] [2022-09-16 11:49:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:49:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796821990] [2022-09-16 11:49:21,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796821990] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:21,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:21,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:49:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613968780] [2022-09-16 11:49:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:49:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:49:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:49:21,094 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:49:21,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1030 places, 1038 transitions, 3063 flow. Second operand has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:21,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:21,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:49:21,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:23,994 INFO L130 PetriNetUnfolder]: 359/5202 cut-off events. [2022-09-16 11:49:23,994 INFO L131 PetriNetUnfolder]: For 735/955 co-relation queries the response was YES. [2022-09-16 11:49:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 5202 events. 359/5202 cut-off events. For 735/955 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43944 event pairs, 60 based on Foata normal form. 3/4717 useless extension candidates. Maximal degree in co-relation 7471. Up to 286 conditions per place. [2022-09-16 11:49:24,303 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1042 dead transitions. [2022-09-16 11:49:24,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1032 places, 1042 transitions, 3106 flow [2022-09-16 11:49:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:49:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:49:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:49:24,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:49:24,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:49:24,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:49:24,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:24,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:49:24,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:24,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:24,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:24,309 INFO L175 Difference]: Start difference. First operand has 1030 places, 1038 transitions, 3063 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:49:24,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1032 places, 1042 transitions, 3106 flow [2022-09-16 11:49:24,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 1042 transitions, 3091 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:49:24,332 INFO L231 Difference]: Finished difference. Result has 1030 places, 1040 transitions, 3070 flow [2022-09-16 11:49:24,333 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=1026, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3070, PETRI_PLACES=1030, PETRI_TRANSITIONS=1040} [2022-09-16 11:49:24,333 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 116 predicate places. [2022-09-16 11:49:24,333 INFO L495 AbstractCegarLoop]: Abstraction has has 1030 places, 1040 transitions, 3070 flow [2022-09-16 11:49:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:24,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:24,334 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-16 11:49:24,334 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:49:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2023055056, now seen corresponding path program 1 times [2022-09-16 11:49:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:24,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969047653] [2022-09-16 11:49:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:24,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:49:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969047653] [2022-09-16 11:49:24,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969047653] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:24,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:24,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:49:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260443684] [2022-09-16 11:49:24,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:49:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:49:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:49:24,378 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1030 [2022-09-16 11:49:24,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1030 places, 1040 transitions, 3070 flow. Second operand has 3 states, 3 states have (on average 964.3333333333334) internal successors, (2893), 3 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:24,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:24,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1030 [2022-09-16 11:49:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:33,508 INFO L130 PetriNetUnfolder]: 1043/12441 cut-off events. [2022-09-16 11:49:33,508 INFO L131 PetriNetUnfolder]: For 1310/2948 co-relation queries the response was YES. [2022-09-16 11:49:34,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17115 conditions, 12441 events. 1043/12441 cut-off events. For 1310/2948 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 153878 event pairs, 263 based on Foata normal form. 1/10889 useless extension candidates. Maximal degree in co-relation 16744. Up to 727 conditions per place. [2022-09-16 11:49:34,603 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 47 selfloop transitions, 4 changer transitions 0/1061 dead transitions. [2022-09-16 11:49:34,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1032 places, 1061 transitions, 3218 flow [2022-09-16 11:49:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:49:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:49:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2938 transitions. [2022-09-16 11:49:34,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9508090614886732 [2022-09-16 11:49:34,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2938 transitions. [2022-09-16 11:49:34,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2938 transitions. [2022-09-16 11:49:34,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:49:34,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2938 transitions. [2022-09-16 11:49:34,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 979.3333333333334) internal successors, (2938), 3 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,609 INFO L175 Difference]: Start difference. First operand has 1030 places, 1040 transitions, 3070 flow. Second operand 3 states and 2938 transitions. [2022-09-16 11:49:34,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1032 places, 1061 transitions, 3218 flow [2022-09-16 11:49:34,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 1061 transitions, 3212 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:49:34,637 INFO L231 Difference]: Finished difference. Result has 1031 places, 1041 transitions, 3088 flow [2022-09-16 11:49:34,637 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=1028, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3088, PETRI_PLACES=1031, PETRI_TRANSITIONS=1041} [2022-09-16 11:49:34,638 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 117 predicate places. [2022-09-16 11:49:34,638 INFO L495 AbstractCegarLoop]: Abstraction has has 1031 places, 1041 transitions, 3088 flow [2022-09-16 11:49:34,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 964.3333333333334) internal successors, (2893), 3 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:49:34,638 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:49:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-16 11:49:34,638 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:49:34,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:49:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 186271240, now seen corresponding path program 1 times [2022-09-16 11:49:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:49:34,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066848719] [2022-09-16 11:49:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:49:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:49:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:49:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:49:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:49:34,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066848719] [2022-09-16 11:49:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066848719] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:49:34,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:49:34,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:49:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284718764] [2022-09-16 11:49:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:49:34,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:49:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:49:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:49:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:49:34,714 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:49:34,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 1041 transitions, 3088 flow. Second operand has 6 states, 6 states have (on average 904.3333333333334) internal successors, (5426), 6 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:49:34,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:49:34,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:49:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:49:59,817 INFO L130 PetriNetUnfolder]: 19608/66652 cut-off events. [2022-09-16 11:49:59,818 INFO L131 PetriNetUnfolder]: For 21247/48979 co-relation queries the response was YES. [2022-09-16 11:50:02,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111925 conditions, 66652 events. 19608/66652 cut-off events. For 21247/48979 co-relation queries the response was YES. Maximal size of possible extension queue 9628. Compared 1191139 event pairs, 10032 based on Foata normal form. 152/45164 useless extension candidates. Maximal degree in co-relation 111432. Up to 20276 conditions per place. [2022-09-16 11:50:02,407 INFO L137 encePairwiseOnDemand]: 1010/1030 looper letters, 89 selfloop transitions, 18 changer transitions 1/1061 dead transitions. [2022-09-16 11:50:02,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1036 places, 1061 transitions, 3353 flow [2022-09-16 11:50:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:50:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:50:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6409 transitions. [2022-09-16 11:50:02,412 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8889042995839113 [2022-09-16 11:50:02,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6409 transitions. [2022-09-16 11:50:02,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6409 transitions. [2022-09-16 11:50:02,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:02,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6409 transitions. [2022-09-16 11:50:02,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 915.5714285714286) internal successors, (6409), 7 states have internal predecessors, (6409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,420 INFO L175 Difference]: Start difference. First operand has 1031 places, 1041 transitions, 3088 flow. Second operand 7 states and 6409 transitions. [2022-09-16 11:50:02,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1036 places, 1061 transitions, 3353 flow [2022-09-16 11:50:02,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1034 places, 1061 transitions, 3347 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:02,558 INFO L231 Difference]: Finished difference. Result has 1039 places, 1049 transitions, 3181 flow [2022-09-16 11:50:02,559 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=1028, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3181, PETRI_PLACES=1039, PETRI_TRANSITIONS=1049} [2022-09-16 11:50:02,559 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 125 predicate places. [2022-09-16 11:50:02,559 INFO L495 AbstractCegarLoop]: Abstraction has has 1039 places, 1049 transitions, 3181 flow [2022-09-16 11:50:02,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.3333333333334) internal successors, (5426), 6 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:02,560 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:02,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-16 11:50:02,560 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:50:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash -580633902, now seen corresponding path program 1 times [2022-09-16 11:50:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:02,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102326564] [2022-09-16 11:50:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:50:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102326564] [2022-09-16 11:50:02,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102326564] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:02,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:02,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:50:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471625299] [2022-09-16 11:50:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:50:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:50:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:50:02,638 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:50:02,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1039 places, 1049 transitions, 3181 flow. Second operand has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:02,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:02,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:50:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:10,761 INFO L130 PetriNetUnfolder]: 2050/12346 cut-off events. [2022-09-16 11:50:10,761 INFO L131 PetriNetUnfolder]: For 3554/4902 co-relation queries the response was YES. [2022-09-16 11:50:11,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 12346 events. 2050/12346 cut-off events. For 3554/4902 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 153806 event pairs, 310 based on Foata normal form. 77/11031 useless extension candidates. Maximal degree in co-relation 22377. Up to 1256 conditions per place. [2022-09-16 11:50:11,843 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 65 selfloop transitions, 13 changer transitions 0/1067 dead transitions. [2022-09-16 11:50:11,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 1067 transitions, 3381 flow [2022-09-16 11:50:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:50:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:50:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9376 transitions. [2022-09-16 11:50:11,848 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9102912621359224 [2022-09-16 11:50:11,848 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9376 transitions. [2022-09-16 11:50:11,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9376 transitions. [2022-09-16 11:50:11,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:11,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9376 transitions. [2022-09-16 11:50:11,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.6) internal successors, (9376), 10 states have internal predecessors, (9376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:11,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:11,860 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:11,860 INFO L175 Difference]: Start difference. First operand has 1039 places, 1049 transitions, 3181 flow. Second operand 10 states and 9376 transitions. [2022-09-16 11:50:11,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1047 places, 1067 transitions, 3381 flow [2022-09-16 11:50:11,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 1067 transitions, 3377 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:11,941 INFO L231 Difference]: Finished difference. Result has 1046 places, 1047 transitions, 3187 flow [2022-09-16 11:50:11,942 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=1037, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3187, PETRI_PLACES=1046, PETRI_TRANSITIONS=1047} [2022-09-16 11:50:11,942 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 132 predicate places. [2022-09-16 11:50:11,942 INFO L495 AbstractCegarLoop]: Abstraction has has 1046 places, 1047 transitions, 3187 flow [2022-09-16 11:50:11,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.125) internal successors, (7457), 8 states have internal predecessors, (7457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:11,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:11,943 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-16 11:50:11,943 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:50:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1426258759, now seen corresponding path program 1 times [2022-09-16 11:50:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:11,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975644009] [2022-09-16 11:50:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:50:12,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975644009] [2022-09-16 11:50:12,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975644009] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:12,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:12,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012443888] [2022-09-16 11:50:12,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:12,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:12,009 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 940 out of 1030 [2022-09-16 11:50:12,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1046 places, 1047 transitions, 3187 flow. Second operand has 6 states, 6 states have (on average 942.5) internal successors, (5655), 6 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:12,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:12,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 940 of 1030 [2022-09-16 11:50:12,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:28,597 INFO L130 PetriNetUnfolder]: 8670/43193 cut-off events. [2022-09-16 11:50:28,597 INFO L131 PetriNetUnfolder]: For 16539/19385 co-relation queries the response was YES. [2022-09-16 11:50:30,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81689 conditions, 43193 events. 8670/43193 cut-off events. For 16539/19385 co-relation queries the response was YES. Maximal size of possible extension queue 3067. Compared 682129 event pairs, 3940 based on Foata normal form. 13/36258 useless extension candidates. Maximal degree in co-relation 81186. Up to 8040 conditions per place. [2022-09-16 11:50:30,341 INFO L137 encePairwiseOnDemand]: 1024/1030 looper letters, 46 selfloop transitions, 5 changer transitions 0/1052 dead transitions. [2022-09-16 11:50:30,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1050 places, 1052 transitions, 3307 flow [2022-09-16 11:50:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5689 transitions. [2022-09-16 11:50:30,344 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9205501618122978 [2022-09-16 11:50:30,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5689 transitions. [2022-09-16 11:50:30,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5689 transitions. [2022-09-16 11:50:30,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:30,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5689 transitions. [2022-09-16 11:50:30,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 948.1666666666666) internal successors, (5689), 6 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:30,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:30,351 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1030.0) internal successors, (7210), 7 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:30,351 INFO L175 Difference]: Start difference. First operand has 1046 places, 1047 transitions, 3187 flow. Second operand 6 states and 5689 transitions. [2022-09-16 11:50:30,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1050 places, 1052 transitions, 3307 flow [2022-09-16 11:50:31,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1052 transitions, 3276 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:50:31,577 INFO L231 Difference]: Finished difference. Result has 1043 places, 1046 transitions, 3168 flow [2022-09-16 11:50:31,578 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=1038, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1041, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3168, PETRI_PLACES=1043, PETRI_TRANSITIONS=1046} [2022-09-16 11:50:31,578 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 129 predicate places. [2022-09-16 11:50:31,578 INFO L495 AbstractCegarLoop]: Abstraction has has 1043 places, 1046 transitions, 3168 flow [2022-09-16 11:50:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 942.5) internal successors, (5655), 6 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:31,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:31,579 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-16 11:50:31,579 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:50:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -819778811, now seen corresponding path program 1 times [2022-09-16 11:50:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:31,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19838789] [2022-09-16 11:50:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:50:31,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19838789] [2022-09-16 11:50:31,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19838789] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:31,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:31,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:50:31,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396623910] [2022-09-16 11:50:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:50:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:50:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:50:31,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:50:31,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 1046 transitions, 3168 flow. Second operand has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:31,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:31,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:50:31,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:39,484 INFO L130 PetriNetUnfolder]: 1762/11981 cut-off events. [2022-09-16 11:50:39,485 INFO L131 PetriNetUnfolder]: For 3021/4458 co-relation queries the response was YES. [2022-09-16 11:50:40,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21808 conditions, 11981 events. 1762/11981 cut-off events. For 3021/4458 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 147206 event pairs, 310 based on Foata normal form. 84/10842 useless extension candidates. Maximal degree in co-relation 21306. Up to 1116 conditions per place. [2022-09-16 11:50:40,511 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 66 selfloop transitions, 13 changer transitions 0/1067 dead transitions. [2022-09-16 11:50:40,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1051 places, 1067 transitions, 3392 flow [2022-09-16 11:50:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:50:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:50:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9377 transitions. [2022-09-16 11:50:40,516 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9103883495145632 [2022-09-16 11:50:40,516 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9377 transitions. [2022-09-16 11:50:40,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9377 transitions. [2022-09-16 11:50:40,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:40,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9377 transitions. [2022-09-16 11:50:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.7) internal successors, (9377), 10 states have internal predecessors, (9377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,528 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,528 INFO L175 Difference]: Start difference. First operand has 1043 places, 1046 transitions, 3168 flow. Second operand 10 states and 9377 transitions. [2022-09-16 11:50:40,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1051 places, 1067 transitions, 3392 flow [2022-09-16 11:50:40,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 1067 transitions, 3379 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:50:40,606 INFO L231 Difference]: Finished difference. Result has 1046 places, 1045 transitions, 3177 flow [2022-09-16 11:50:40,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=1037, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3177, PETRI_PLACES=1046, PETRI_TRANSITIONS=1045} [2022-09-16 11:50:40,607 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 132 predicate places. [2022-09-16 11:50:40,607 INFO L495 AbstractCegarLoop]: Abstraction has has 1046 places, 1045 transitions, 3177 flow [2022-09-16 11:50:40,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:40,609 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:40,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-09-16 11:50:40,609 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:50:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -751376961, now seen corresponding path program 1 times [2022-09-16 11:50:40,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:40,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989276415] [2022-09-16 11:50:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:40,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:50:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989276415] [2022-09-16 11:50:40,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989276415] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:40,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:40,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:50:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193358145] [2022-09-16 11:50:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:40,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:50:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:50:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:50:40,683 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 900 out of 1030 [2022-09-16 11:50:40,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1046 places, 1045 transitions, 3177 flow. Second operand has 6 states, 6 states have (on average 904.5) internal successors, (5427), 6 states have internal predecessors, (5427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:40,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 900 of 1030 [2022-09-16 11:50:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:06,659 INFO L130 PetriNetUnfolder]: 18420/65057 cut-off events. [2022-09-16 11:51:06,660 INFO L131 PetriNetUnfolder]: For 24169/50107 co-relation queries the response was YES. [2022-09-16 11:51:08,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117123 conditions, 65057 events. 18420/65057 cut-off events. For 24169/50107 co-relation queries the response was YES. Maximal size of possible extension queue 8873. Compared 1158139 event pairs, 8712 based on Foata normal form. 138/47043 useless extension candidates. Maximal degree in co-relation 116627. Up to 17626 conditions per place. [2022-09-16 11:51:08,954 INFO L137 encePairwiseOnDemand]: 1009/1030 looper letters, 108 selfloop transitions, 21 changer transitions 1/1080 dead transitions. [2022-09-16 11:51:08,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1051 places, 1080 transitions, 3561 flow [2022-09-16 11:51:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:51:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:51:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6422 transitions. [2022-09-16 11:51:08,957 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8907073509015256 [2022-09-16 11:51:08,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6422 transitions. [2022-09-16 11:51:08,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6422 transitions. [2022-09-16 11:51:08,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:08,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6422 transitions. [2022-09-16 11:51:08,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 917.4285714285714) internal successors, (6422), 7 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:08,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:08,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1030.0) internal successors, (8240), 8 states have internal predecessors, (8240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:08,965 INFO L175 Difference]: Start difference. First operand has 1046 places, 1045 transitions, 3177 flow. Second operand 7 states and 6422 transitions. [2022-09-16 11:51:08,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1051 places, 1080 transitions, 3561 flow [2022-09-16 11:51:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1080 transitions, 3532 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-09-16 11:51:10,194 INFO L231 Difference]: Finished difference. Result has 1048 places, 1056 transitions, 3284 flow [2022-09-16 11:51:10,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3144, PETRI_DIFFERENCE_MINUEND_PLACES=1037, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3284, PETRI_PLACES=1048, PETRI_TRANSITIONS=1056} [2022-09-16 11:51:10,195 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 134 predicate places. [2022-09-16 11:51:10,195 INFO L495 AbstractCegarLoop]: Abstraction has has 1048 places, 1056 transitions, 3284 flow [2022-09-16 11:51:10,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 904.5) internal successors, (5427), 6 states have internal predecessors, (5427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:10,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:10,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:10,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-09-16 11:51:10,196 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:51:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2071523663, now seen corresponding path program 1 times [2022-09-16 11:51:10,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:10,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034038946] [2022-09-16 11:51:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:51:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:10,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034038946] [2022-09-16 11:51:10,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034038946] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:10,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:10,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:10,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857419637] [2022-09-16 11:51:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:10,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:10,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:10,240 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:51:10,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1048 places, 1056 transitions, 3284 flow. Second operand has 3 states, 3 states have (on average 981.3333333333334) internal successors, (2944), 3 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:10,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:10,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:51:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:20,544 INFO L130 PetriNetUnfolder]: 2712/33562 cut-off events. [2022-09-16 11:51:20,544 INFO L131 PetriNetUnfolder]: For 4489/6846 co-relation queries the response was YES. [2022-09-16 11:51:21,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49787 conditions, 33562 events. 2712/33562 cut-off events. For 4489/6846 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 451617 event pairs, 660 based on Foata normal form. 0/29910 useless extension candidates. Maximal degree in co-relation 49544. Up to 1739 conditions per place. [2022-09-16 11:51:21,478 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1060 dead transitions. [2022-09-16 11:51:21,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1050 places, 1060 transitions, 3326 flow [2022-09-16 11:51:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:51:21,480 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:51:21,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:51:21,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:51:21,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:21,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:51:21,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:21,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:21,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:21,484 INFO L175 Difference]: Start difference. First operand has 1048 places, 1056 transitions, 3284 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:51:21,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1050 places, 1060 transitions, 3326 flow [2022-09-16 11:51:22,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 1060 transitions, 3326 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:51:22,034 INFO L231 Difference]: Finished difference. Result has 1052 places, 1058 transitions, 3306 flow [2022-09-16 11:51:22,034 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=1048, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3306, PETRI_PLACES=1052, PETRI_TRANSITIONS=1058} [2022-09-16 11:51:22,035 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 138 predicate places. [2022-09-16 11:51:22,035 INFO L495 AbstractCegarLoop]: Abstraction has has 1052 places, 1058 transitions, 3306 flow [2022-09-16 11:51:22,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 981.3333333333334) internal successors, (2944), 3 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:22,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:22,035 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-09-16 11:51:22,036 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:51:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1874050351, now seen corresponding path program 1 times [2022-09-16 11:51:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:22,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080706943] [2022-09-16 11:51:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:22,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:51:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080706943] [2022-09-16 11:51:22,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080706943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:22,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:22,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:22,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081049443] [2022-09-16 11:51:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:22,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:22,080 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:51:22,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 1058 transitions, 3306 flow. Second operand has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:22,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:22,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:51:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:32,959 INFO L130 PetriNetUnfolder]: 2712/34118 cut-off events. [2022-09-16 11:51:32,959 INFO L131 PetriNetUnfolder]: For 4888/7241 co-relation queries the response was YES. [2022-09-16 11:51:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51542 conditions, 34118 events. 2712/34118 cut-off events. For 4888/7241 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 468139 event pairs, 660 based on Foata normal form. 6/30726 useless extension candidates. Maximal degree in co-relation 51297. Up to 1739 conditions per place. [2022-09-16 11:51:34,037 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1062 dead transitions. [2022-09-16 11:51:34,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1062 transitions, 3348 flow [2022-09-16 11:51:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:51:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:51:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:51:34,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:51:34,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:51:34,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:51:34,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:34,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:51:34,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:34,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:34,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:34,043 INFO L175 Difference]: Start difference. First operand has 1052 places, 1058 transitions, 3306 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:51:34,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1062 transitions, 3348 flow [2022-09-16 11:51:34,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1052 places, 1062 transitions, 3342 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:51:34,509 INFO L231 Difference]: Finished difference. Result has 1054 places, 1060 transitions, 3322 flow [2022-09-16 11:51:34,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=1050, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3322, PETRI_PLACES=1054, PETRI_TRANSITIONS=1060} [2022-09-16 11:51:34,510 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 140 predicate places. [2022-09-16 11:51:34,510 INFO L495 AbstractCegarLoop]: Abstraction has has 1054 places, 1060 transitions, 3322 flow [2022-09-16 11:51:34,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:34,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:34,510 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-09-16 11:51:34,510 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:51:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1482308363, now seen corresponding path program 1 times [2022-09-16 11:51:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:34,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414007508] [2022-09-16 11:51:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:51:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:34,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414007508] [2022-09-16 11:51:34,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414007508] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:34,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:34,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:51:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301678912] [2022-09-16 11:51:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:51:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:51:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:51:34,583 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:51:34,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 1060 transitions, 3322 flow. Second operand has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:34,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:34,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:51:34,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:50,820 INFO L130 PetriNetUnfolder]: 9004/39440 cut-off events. [2022-09-16 11:51:50,820 INFO L131 PetriNetUnfolder]: For 20006/35211 co-relation queries the response was YES. [2022-09-16 11:51:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82394 conditions, 39440 events. 9004/39440 cut-off events. For 20006/35211 co-relation queries the response was YES. Maximal size of possible extension queue 4363. Compared 663974 event pairs, 2282 based on Foata normal form. 364/31757 useless extension candidates. Maximal degree in co-relation 82144. Up to 8107 conditions per place. [2022-09-16 11:51:52,337 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 61 selfloop transitions, 13 changer transitions 2/1076 dead transitions. [2022-09-16 11:51:52,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 1076 transitions, 3506 flow [2022-09-16 11:51:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:51:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:51:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9374 transitions. [2022-09-16 11:51:52,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9100970873786408 [2022-09-16 11:51:52,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9374 transitions. [2022-09-16 11:51:52,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9374 transitions. [2022-09-16 11:51:52,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:52,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9374 transitions. [2022-09-16 11:51:52,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.4) internal successors, (9374), 10 states have internal predecessors, (9374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:52,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:52,352 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:52,352 INFO L175 Difference]: Start difference. First operand has 1054 places, 1060 transitions, 3322 flow. Second operand 10 states and 9374 transitions. [2022-09-16 11:51:52,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1062 places, 1076 transitions, 3506 flow [2022-09-16 11:51:53,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 1076 transitions, 3496 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:51:53,524 INFO L231 Difference]: Finished difference. Result has 1059 places, 1058 transitions, 3322 flow [2022-09-16 11:51:53,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=1050, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3322, PETRI_PLACES=1059, PETRI_TRANSITIONS=1058} [2022-09-16 11:51:53,525 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 145 predicate places. [2022-09-16 11:51:53,525 INFO L495 AbstractCegarLoop]: Abstraction has has 1059 places, 1058 transitions, 3322 flow [2022-09-16 11:51:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.25) internal successors, (7458), 8 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:53,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:53,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:53,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-09-16 11:51:53,526 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:51:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1370237779, now seen corresponding path program 1 times [2022-09-16 11:51:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:53,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821515270] [2022-09-16 11:51:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:51:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:53,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821515270] [2022-09-16 11:51:53,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821515270] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:53,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:53,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:51:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237607173] [2022-09-16 11:51:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:51:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:51:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:51:53,574 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1030 [2022-09-16 11:51:53,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1059 places, 1058 transitions, 3322 flow. Second operand has 3 states, 3 states have (on average 964.6666666666666) internal successors, (2894), 3 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:53,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:53,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1030 [2022-09-16 11:51:53,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:17,023 INFO L130 PetriNetUnfolder]: 8375/66453 cut-off events. [2022-09-16 11:52:17,023 INFO L131 PetriNetUnfolder]: For 10741/17508 co-relation queries the response was YES. [2022-09-16 11:52:19,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106041 conditions, 66453 events. 8375/66453 cut-off events. For 10741/17508 co-relation queries the response was YES. Maximal size of possible extension queue 2598. Compared 1093273 event pairs, 2783 based on Foata normal form. 0/57553 useless extension candidates. Maximal degree in co-relation 105790. Up to 6051 conditions per place. [2022-09-16 11:52:19,463 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 46 selfloop transitions, 4 changer transitions 0/1078 dead transitions. [2022-09-16 11:52:19,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 1078 transitions, 3464 flow [2022-09-16 11:52:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:52:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:52:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2937 transitions. [2022-09-16 11:52:19,465 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9504854368932039 [2022-09-16 11:52:19,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2937 transitions. [2022-09-16 11:52:19,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2937 transitions. [2022-09-16 11:52:19,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:19,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2937 transitions. [2022-09-16 11:52:19,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:19,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:19,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:19,468 INFO L175 Difference]: Start difference. First operand has 1059 places, 1058 transitions, 3322 flow. Second operand 3 states and 2937 transitions. [2022-09-16 11:52:19,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1061 places, 1078 transitions, 3464 flow [2022-09-16 11:52:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1054 places, 1078 transitions, 3437 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:52:20,969 INFO L231 Difference]: Finished difference. Result has 1055 places, 1059 transitions, 3319 flow [2022-09-16 11:52:20,969 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=1052, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1054, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3319, PETRI_PLACES=1055, PETRI_TRANSITIONS=1059} [2022-09-16 11:52:20,970 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 141 predicate places. [2022-09-16 11:52:20,970 INFO L495 AbstractCegarLoop]: Abstraction has has 1055 places, 1059 transitions, 3319 flow [2022-09-16 11:52:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 964.6666666666666) internal successors, (2894), 3 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:20,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:20,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:20,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-09-16 11:52:20,970 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:52:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1293084227, now seen corresponding path program 1 times [2022-09-16 11:52:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:20,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653931613] [2022-09-16 11:52:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:52:21,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:21,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653931613] [2022-09-16 11:52:21,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653931613] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:21,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:21,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:52:21,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940443733] [2022-09-16 11:52:21,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:21,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:52:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:52:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:52:21,049 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 930 out of 1030 [2022-09-16 11:52:21,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 1059 transitions, 3319 flow. Second operand has 8 states, 8 states have (on average 932.375) internal successors, (7459), 8 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:21,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:21,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 930 of 1030 [2022-09-16 11:52:21,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:44,926 INFO L130 PetriNetUnfolder]: 11452/54926 cut-off events. [2022-09-16 11:52:44,927 INFO L131 PetriNetUnfolder]: For 23733/38172 co-relation queries the response was YES. [2022-09-16 11:52:47,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113329 conditions, 54926 events. 11452/54926 cut-off events. For 23733/38172 co-relation queries the response was YES. Maximal size of possible extension queue 4767. Compared 945555 event pairs, 2282 based on Foata normal form. 625/45206 useless extension candidates. Maximal degree in co-relation 112824. Up to 10285 conditions per place. [2022-09-16 11:52:47,365 INFO L137 encePairwiseOnDemand]: 1017/1030 looper letters, 58 selfloop transitions, 13 changer transitions 6/1078 dead transitions. [2022-09-16 11:52:47,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 1078 transitions, 3527 flow [2022-09-16 11:52:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:52:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:52:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9375 transitions. [2022-09-16 11:52:47,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9101941747572816 [2022-09-16 11:52:47,370 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 9375 transitions. [2022-09-16 11:52:47,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 9375 transitions. [2022-09-16 11:52:47,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:47,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 9375 transitions. [2022-09-16 11:52:47,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 937.5) internal successors, (9375), 10 states have internal predecessors, (9375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:47,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:47,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1030.0) internal successors, (11330), 11 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:47,381 INFO L175 Difference]: Start difference. First operand has 1055 places, 1059 transitions, 3319 flow. Second operand 10 states and 9375 transitions. [2022-09-16 11:52:47,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 1078 transitions, 3527 flow [2022-09-16 11:52:49,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1061 places, 1078 transitions, 3519 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:52:49,554 INFO L231 Difference]: Finished difference. Result has 1061 places, 1058 transitions, 3333 flow [2022-09-16 11:52:49,555 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=1052, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3333, PETRI_PLACES=1061, PETRI_TRANSITIONS=1058} [2022-09-16 11:52:49,555 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 147 predicate places. [2022-09-16 11:52:49,555 INFO L495 AbstractCegarLoop]: Abstraction has has 1061 places, 1058 transitions, 3333 flow [2022-09-16 11:52:49,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 932.375) internal successors, (7459), 8 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:49,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:49,556 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-09-16 11:52:49,556 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:52:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 387780246, now seen corresponding path program 1 times [2022-09-16 11:52:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938895620] [2022-09-16 11:52:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:52:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938895620] [2022-09-16 11:52:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938895620] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:49,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:49,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778380005] [2022-09-16 11:52:49,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:49,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:49,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:49,608 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:52:49,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1061 places, 1058 transitions, 3333 flow. Second operand has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:49,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:49,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:52:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:52,726 INFO L130 PetriNetUnfolder]: 217/4333 cut-off events. [2022-09-16 11:52:52,727 INFO L131 PetriNetUnfolder]: For 577/1119 co-relation queries the response was YES. [2022-09-16 11:52:53,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 4333 events. 217/4333 cut-off events. For 577/1119 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 38805 event pairs, 20 based on Foata normal form. 3/4019 useless extension candidates. Maximal degree in co-relation 6226. Up to 193 conditions per place. [2022-09-16 11:52:53,029 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1062 dead transitions. [2022-09-16 11:52:53,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 1062 transitions, 3376 flow [2022-09-16 11:52:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:52:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:52:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:52:53,031 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:52:53,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:52:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:52:53,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:53,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:52:53,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,035 INFO L175 Difference]: Start difference. First operand has 1061 places, 1058 transitions, 3333 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:52:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 1062 transitions, 3376 flow [2022-09-16 11:52:53,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1056 places, 1062 transitions, 3349 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-16 11:52:53,055 INFO L231 Difference]: Finished difference. Result has 1058 places, 1060 transitions, 3328 flow [2022-09-16 11:52:53,056 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3328, PETRI_PLACES=1058, PETRI_TRANSITIONS=1060} [2022-09-16 11:52:53,056 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 144 predicate places. [2022-09-16 11:52:53,056 INFO L495 AbstractCegarLoop]: Abstraction has has 1058 places, 1060 transitions, 3328 flow [2022-09-16 11:52:53,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:53,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:53,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-09-16 11:52:53,057 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:52:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1349883306, now seen corresponding path program 1 times [2022-09-16 11:52:53,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529869351] [2022-09-16 11:52:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:52:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:53,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529869351] [2022-09-16 11:52:53,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529869351] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:53,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:53,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:53,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462415320] [2022-09-16 11:52:53,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:53,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:53,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:53,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:52:53,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 1060 transitions, 3328 flow. Second operand has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:53,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:53,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:52:53,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:56,178 INFO L130 PetriNetUnfolder]: 213/4323 cut-off events. [2022-09-16 11:52:56,178 INFO L131 PetriNetUnfolder]: For 553/1095 co-relation queries the response was YES. [2022-09-16 11:52:56,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 4323 events. 213/4323 cut-off events. For 553/1095 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 39046 event pairs, 20 based on Foata normal form. 3/4021 useless extension candidates. Maximal degree in co-relation 6223. Up to 193 conditions per place. [2022-09-16 11:52:56,467 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1064 dead transitions. [2022-09-16 11:52:56,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1060 places, 1064 transitions, 3371 flow [2022-09-16 11:52:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:52:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:52:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:52:56,469 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:52:56,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:52:56,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:52:56,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:56,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:52:56,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:56,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:56,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:56,473 INFO L175 Difference]: Start difference. First operand has 1058 places, 1060 transitions, 3328 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:52:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1060 places, 1064 transitions, 3371 flow [2022-09-16 11:52:56,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1058 places, 1064 transitions, 3365 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:52:56,492 INFO L231 Difference]: Finished difference. Result has 1060 places, 1062 transitions, 3344 flow [2022-09-16 11:52:56,493 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=1056, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1057, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3344, PETRI_PLACES=1060, PETRI_TRANSITIONS=1062} [2022-09-16 11:52:56,493 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 146 predicate places. [2022-09-16 11:52:56,493 INFO L495 AbstractCegarLoop]: Abstraction has has 1060 places, 1062 transitions, 3344 flow [2022-09-16 11:52:56,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:56,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:56,494 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:56,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-09-16 11:52:56,494 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:52:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash -371407306, now seen corresponding path program 1 times [2022-09-16 11:52:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:56,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538913420] [2022-09-16 11:52:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:52:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:56,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538913420] [2022-09-16 11:52:56,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538913420] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:56,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:56,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265117076] [2022-09-16 11:52:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:56,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:56,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:52:56,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1060 places, 1062 transitions, 3344 flow. Second operand has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:56,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:56,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:52:56,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:59,467 INFO L130 PetriNetUnfolder]: 205/4271 cut-off events. [2022-09-16 11:52:59,468 INFO L131 PetriNetUnfolder]: For 553/1095 co-relation queries the response was YES. [2022-09-16 11:52:59,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6570 conditions, 4271 events. 205/4271 cut-off events. For 553/1095 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 37837 event pairs, 20 based on Foata normal form. 3/3979 useless extension candidates. Maximal degree in co-relation 6183. Up to 193 conditions per place. [2022-09-16 11:52:59,770 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1066 dead transitions. [2022-09-16 11:52:59,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 1066 transitions, 3387 flow [2022-09-16 11:52:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:52:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:52:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:52:59,772 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:52:59,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:52:59,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:52:59,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:59,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:52:59,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:59,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:59,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:59,776 INFO L175 Difference]: Start difference. First operand has 1060 places, 1062 transitions, 3344 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:52:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1062 places, 1066 transitions, 3387 flow [2022-09-16 11:52:59,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1060 places, 1066 transitions, 3381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:52:59,903 INFO L231 Difference]: Finished difference. Result has 1062 places, 1064 transitions, 3360 flow [2022-09-16 11:52:59,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=1058, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3360, PETRI_PLACES=1062, PETRI_TRANSITIONS=1064} [2022-09-16 11:52:59,904 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 148 predicate places. [2022-09-16 11:52:59,904 INFO L495 AbstractCegarLoop]: Abstraction has has 1062 places, 1064 transitions, 3360 flow [2022-09-16 11:52:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 980.6666666666666) internal successors, (2942), 3 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:59,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:59,905 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-09-16 11:52:59,905 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:52:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash 806350422, now seen corresponding path program 1 times [2022-09-16 11:52:59,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:59,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764807379] [2022-09-16 11:52:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:52:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:59,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764807379] [2022-09-16 11:52:59,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764807379] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:59,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:59,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557471738] [2022-09-16 11:52:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:52:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:52:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:52:59,953 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 956 out of 1030 [2022-09-16 11:52:59,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1062 places, 1064 transitions, 3360 flow. Second operand has 4 states, 4 states have (on average 958.25) internal successors, (3833), 4 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:59,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:59,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 956 of 1030 [2022-09-16 11:52:59,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:19,066 INFO L130 PetriNetUnfolder]: 1083/22088 cut-off events. [2022-09-16 11:53:19,066 INFO L131 PetriNetUnfolder]: For 2283/3855 co-relation queries the response was YES. [2022-09-16 11:53:21,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34027 conditions, 22088 events. 1083/22088 cut-off events. For 2283/3855 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 272071 event pairs, 53 based on Foata normal form. 6/20875 useless extension candidates. Maximal degree in co-relation 33639. Up to 595 conditions per place. [2022-09-16 11:53:21,590 INFO L137 encePairwiseOnDemand]: 1022/1030 looper letters, 58 selfloop transitions, 6 changer transitions 0/1092 dead transitions. [2022-09-16 11:53:21,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1066 places, 1092 transitions, 3555 flow [2022-09-16 11:53:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:53:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:53:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4846 transitions. [2022-09-16 11:53:21,593 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9409708737864078 [2022-09-16 11:53:21,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4846 transitions. [2022-09-16 11:53:21,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4846 transitions. [2022-09-16 11:53:21,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:21,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4846 transitions. [2022-09-16 11:53:21,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 969.2) internal successors, (4846), 5 states have internal predecessors, (4846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:21,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:21,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:21,599 INFO L175 Difference]: Start difference. First operand has 1062 places, 1064 transitions, 3360 flow. Second operand 5 states and 4846 transitions. [2022-09-16 11:53:21,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1066 places, 1092 transitions, 3555 flow [2022-09-16 11:53:21,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 1092 transitions, 3549 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:21,768 INFO L231 Difference]: Finished difference. Result has 1067 places, 1066 transitions, 3386 flow [2022-09-16 11:53:21,769 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=1060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3386, PETRI_PLACES=1067, PETRI_TRANSITIONS=1066} [2022-09-16 11:53:21,769 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 153 predicate places. [2022-09-16 11:53:21,769 INFO L495 AbstractCegarLoop]: Abstraction has has 1067 places, 1066 transitions, 3386 flow [2022-09-16 11:53:21,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 958.25) internal successors, (3833), 4 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:21,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:21,770 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-09-16 11:53:21,770 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:53:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1521556660, now seen corresponding path program 1 times [2022-09-16 11:53:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:21,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413786897] [2022-09-16 11:53:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:53:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:21,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413786897] [2022-09-16 11:53:21,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413786897] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:21,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:21,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384967038] [2022-09-16 11:53:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:21,812 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:53:21,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 1066 transitions, 3386 flow. Second operand has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:21,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:21,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:53:21,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:28,035 INFO L130 PetriNetUnfolder]: 590/7350 cut-off events. [2022-09-16 11:53:28,035 INFO L131 PetriNetUnfolder]: For 829/1170 co-relation queries the response was YES. [2022-09-16 11:53:28,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10894 conditions, 7350 events. 590/7350 cut-off events. For 829/1170 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 70803 event pairs, 120 based on Foata normal form. 0/6717 useless extension candidates. Maximal degree in co-relation 10515. Up to 423 conditions per place. [2022-09-16 11:53:28,838 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1070 dead transitions. [2022-09-16 11:53:28,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1069 places, 1070 transitions, 3429 flow [2022-09-16 11:53:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:53:28,842 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:53:28,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:53:28,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:53:28,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:28,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:53:28,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:28,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:28,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:28,846 INFO L175 Difference]: Start difference. First operand has 1067 places, 1066 transitions, 3386 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:53:28,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1069 places, 1070 transitions, 3429 flow [2022-09-16 11:53:28,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1067 places, 1070 transitions, 3421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:28,873 INFO L231 Difference]: Finished difference. Result has 1069 places, 1068 transitions, 3400 flow [2022-09-16 11:53:28,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=1065, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1063, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3400, PETRI_PLACES=1069, PETRI_TRANSITIONS=1068} [2022-09-16 11:53:28,874 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 155 predicate places. [2022-09-16 11:53:28,874 INFO L495 AbstractCegarLoop]: Abstraction has has 1069 places, 1068 transitions, 3400 flow [2022-09-16 11:53:28,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:28,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:28,875 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:28,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-09-16 11:53:28,875 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:53:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2001407820, now seen corresponding path program 1 times [2022-09-16 11:53:28,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:28,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290978378] [2022-09-16 11:53:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:53:28,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:28,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290978378] [2022-09-16 11:53:28,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290978378] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:28,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:28,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:28,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17976363] [2022-09-16 11:53:28,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:28,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:28,923 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 979 out of 1030 [2022-09-16 11:53:28,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1069 places, 1068 transitions, 3400 flow. Second operand has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:28,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:28,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 979 of 1030 [2022-09-16 11:53:28,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:34,929 INFO L130 PetriNetUnfolder]: 518/6758 cut-off events. [2022-09-16 11:53:34,930 INFO L131 PetriNetUnfolder]: For 864/1043 co-relation queries the response was YES. [2022-09-16 11:53:35,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10281 conditions, 6758 events. 518/6758 cut-off events. For 864/1043 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 66143 event pairs, 120 based on Foata normal form. 3/6196 useless extension candidates. Maximal degree in co-relation 9901. Up to 423 conditions per place. [2022-09-16 11:53:35,699 INFO L137 encePairwiseOnDemand]: 1026/1030 looper letters, 13 selfloop transitions, 3 changer transitions 0/1072 dead transitions. [2022-09-16 11:53:35,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1071 places, 1072 transitions, 3443 flow [2022-09-16 11:53:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2022-09-16 11:53:35,701 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9559870550161812 [2022-09-16 11:53:35,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2022-09-16 11:53:35,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2022-09-16 11:53:35,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:35,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2022-09-16 11:53:35,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:35,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:35,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:35,705 INFO L175 Difference]: Start difference. First operand has 1069 places, 1068 transitions, 3400 flow. Second operand 3 states and 2954 transitions. [2022-09-16 11:53:35,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1071 places, 1072 transitions, 3443 flow [2022-09-16 11:53:35,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1069 places, 1072 transitions, 3437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:35,730 INFO L231 Difference]: Finished difference. Result has 1071 places, 1070 transitions, 3416 flow [2022-09-16 11:53:35,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=1067, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3416, PETRI_PLACES=1071, PETRI_TRANSITIONS=1070} [2022-09-16 11:53:35,732 INFO L287 CegarLoopForPetriNet]: 914 programPoint places, 157 predicate places. [2022-09-16 11:53:35,732 INFO L495 AbstractCegarLoop]: Abstraction has has 1071 places, 1070 transitions, 3416 flow [2022-09-16 11:53:35,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 981.0) internal successors, (2943), 3 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:35,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:35,732 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:35,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-09-16 11:53:35,732 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-09-16 11:53:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1115801748, now seen corresponding path program 1 times [2022-09-16 11:53:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:35,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269430755] [2022-09-16 11:53:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:35,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-09-16 11:53:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:35,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269430755] [2022-09-16 11:53:35,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269430755] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:35,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:35,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893063299] [2022-09-16 11:53:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:35,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 956 out of 1030 [2022-09-16 11:53:35,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1071 places, 1070 transitions, 3416 flow. Second operand has 4 states, 4 states have (on average 958.5) internal successors, (3834), 4 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:35,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:35,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 956 of 1030 [2022-09-16 11:53:35,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand