/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/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:53:48,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:53:48,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:53:48,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:53:48,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:53:48,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:53:48,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:53:48,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:53:48,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:53:48,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:53:48,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:53:48,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:53:48,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:53:48,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:53:48,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:53:48,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:53:48,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:53:48,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:53:48,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:53:48,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:53:48,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:53:48,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:53:48,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:53:48,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:53:48,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:53:48,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:53:48,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:53:48,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:53:48,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:53:48,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:53:48,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:53:48,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:53:48,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:53:48,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:53:48,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:53:48,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:53:48,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:53:48,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:53:48,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:53:48,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:53:48,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:53:48,815 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 11:53:48,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:53:48,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:53:48,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:53:48,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:53:48,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:53:48,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:53:48,837 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:53:48,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:53:48,837 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:53:48,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:53:48,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:53:48,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:53:48,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:53:48,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:53:48,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:53:48,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:48,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:53:48,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:53:48,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:53:48,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:53:48,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:53:48,841 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:53:48,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:53:48,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:53:49,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:53:49,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:53:49,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:53:49,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:53:49,063 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:53:49,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-09-16 11:53:49,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb3376c3/396d23e7acc343d2b2bae5386c2b1733/FLAG1410105f6 [2022-09-16 11:53:49,426 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:53:49,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-09-16 11:53:49,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb3376c3/396d23e7acc343d2b2bae5386c2b1733/FLAG1410105f6 [2022-09-16 11:53:49,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb3376c3/396d23e7acc343d2b2bae5386c2b1733 [2022-09-16 11:53:49,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:53:49,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:53:49,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:49,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:53:49,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:53:49,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:49" (1/1) ... [2022-09-16 11:53:49,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d3382f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:49, skipping insertion in model container [2022-09-16 11:53:49,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:49" (1/1) ... [2022-09-16 11:53:49,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:53:49,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:53:50,103 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/popl20-bad-ring.wvr.c[3947,3960] [2022-09-16 11:53:50,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:50,120 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:53:50,153 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/popl20-bad-ring.wvr.c[3947,3960] [2022-09-16 11:53:50,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:50,169 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:53:50,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50 WrapperNode [2022-09-16 11:53:50,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:50,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:50,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:53:50,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:53:50,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,232 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 347 [2022-09-16 11:53:50,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:50,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:53:50,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:53:50,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:53:50,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:53:50,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:53:50,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:53:50,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:53:50,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (1/1) ... [2022-09-16 11:53:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:50,304 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 11:53:50,324 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 11:53:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:53:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:53:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:53:50,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:53:50,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:53:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:53:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:53:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:53:50,344 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 11:53:50,462 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:53:50,469 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:53:50,827 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:53:51,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:53:51,012 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:53:51,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:51 BoogieIcfgContainer [2022-09-16 11:53:51,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:53:51,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:53:51,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:53:51,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:53:51,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:53:49" (1/3) ... [2022-09-16 11:53:51,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d944bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:51, skipping insertion in model container [2022-09-16 11:53:51,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:50" (2/3) ... [2022-09-16 11:53:51,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d944bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:51, skipping insertion in model container [2022-09-16 11:53:51,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:51" (3/3) ... [2022-09-16 11:53:51,023 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-09-16 11:53:51,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:53:51,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:53:51,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:53:51,170 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:53:51,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 312 transitions, 648 flow [2022-09-16 11:53:51,320 INFO L130 PetriNetUnfolder]: 22/309 cut-off events. [2022-09-16 11:53:51,320 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:53:51,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 309 events. 22/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 346 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2022-09-16 11:53:51,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 312 transitions, 648 flow [2022-09-16 11:53:51,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 288 transitions, 591 flow [2022-09-16 11:53:51,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:53:51,360 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;@129c98d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:53:51,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-09-16 11:53:51,372 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-09-16 11:53:51,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:53:51,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:51,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:51,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:53:51,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1046962168, now seen corresponding path program 1 times [2022-09-16 11:53:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:51,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796723837] [2022-09-16 11:53:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:51,625 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 11:53:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796723837] [2022-09-16 11:53:51,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796723837] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:51,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:51,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466543865] [2022-09-16 11:53:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:51,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:51,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-09-16 11:53:51,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 288 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:51,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-09-16 11:53:51,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:52,659 INFO L130 PetriNetUnfolder]: 2371/5576 cut-off events. [2022-09-16 11:53:52,660 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-09-16 11:53:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 5576 events. 2371/5576 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 46347 event pairs, 1440 based on Foata normal form. 546/3442 useless extension candidates. Maximal degree in co-relation 4348. Up to 1674 conditions per place. [2022-09-16 11:53:52,708 INFO L137 encePairwiseOnDemand]: 270/312 looper letters, 94 selfloop transitions, 14 changer transitions 7/315 dead transitions. [2022-09-16 11:53:52,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 315 transitions, 876 flow [2022-09-16 11:53:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:53:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:53:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1292 transitions. [2022-09-16 11:53:52,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8282051282051283 [2022-09-16 11:53:52,722 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1292 transitions. [2022-09-16 11:53:52,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1292 transitions. [2022-09-16 11:53:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:52,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1292 transitions. [2022-09-16 11:53:52,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.4) internal successors, (1292), 5 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:52,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:52,738 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:52,740 INFO L175 Difference]: Start difference. First operand has 277 places, 288 transitions, 591 flow. Second operand 5 states and 1292 transitions. [2022-09-16 11:53:52,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 315 transitions, 876 flow [2022-09-16 11:53:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 315 transitions, 858 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:52,748 INFO L231 Difference]: Finished difference. Result has 272 places, 270 transitions, 628 flow [2022-09-16 11:53:52,749 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=628, PETRI_PLACES=272, PETRI_TRANSITIONS=270} [2022-09-16 11:53:52,752 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, -5 predicate places. [2022-09-16 11:53:52,752 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 270 transitions, 628 flow [2022-09-16 11:53:52,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:52,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:52,753 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] [2022-09-16 11:53:52,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:53:52,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:53:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1662843169, now seen corresponding path program 1 times [2022-09-16 11:53:52,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:52,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153391904] [2022-09-16 11:53:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:52,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:52,812 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 11:53:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153391904] [2022-09-16 11:53:52,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153391904] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628975556] [2022-09-16 11:53:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:52,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:52,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:52,815 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 11:53:52,844 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 11:53:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:52,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:52,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:53,039 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 11:53:53,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:53,085 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 11:53:53,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628975556] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:53,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:53,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:53:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857650209] [2022-09-16 11:53:53,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:53,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:53:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:53:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:53:53,089 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-09-16 11:53:53,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 270 transitions, 628 flow. Second operand has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:53,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:53,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-09-16 11:53:53,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:55,194 INFO L130 PetriNetUnfolder]: 5926/13773 cut-off events. [2022-09-16 11:53:55,194 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-09-16 11:53:55,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22711 conditions, 13773 events. 5926/13773 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 125202 event pairs, 3600 based on Foata normal form. 9/7117 useless extension candidates. Maximal degree in co-relation 17800. Up to 1665 conditions per place. [2022-09-16 11:53:55,293 INFO L137 encePairwiseOnDemand]: 289/312 looper letters, 199 selfloop transitions, 62 changer transitions 0/461 dead transitions. [2022-09-16 11:53:55,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 461 transitions, 1634 flow [2022-09-16 11:53:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:53:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:53:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4374 transitions. [2022-09-16 11:53:55,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7788461538461539 [2022-09-16 11:53:55,301 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4374 transitions. [2022-09-16 11:53:55,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4374 transitions. [2022-09-16 11:53:55,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:55,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4374 transitions. [2022-09-16 11:53:55,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 243.0) internal successors, (4374), 18 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:55,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 312.0) internal successors, (5928), 19 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:55,320 INFO L175 Difference]: Start difference. First operand has 272 places, 270 transitions, 628 flow. Second operand 18 states and 4374 transitions. [2022-09-16 11:53:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 461 transitions, 1634 flow [2022-09-16 11:53:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 461 transitions, 1626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:53:55,329 INFO L231 Difference]: Finished difference. Result has 285 places, 312 transitions, 990 flow [2022-09-16 11:53:55,330 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=990, PETRI_PLACES=285, PETRI_TRANSITIONS=312} [2022-09-16 11:53:55,330 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 8 predicate places. [2022-09-16 11:53:55,330 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 312 transitions, 990 flow [2022-09-16 11:53:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.66666666666666) internal successors, (2768), 12 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:55,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:55,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:55,354 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 11:53:55,547 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 11:53:55,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:53:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -8529628, now seen corresponding path program 1 times [2022-09-16 11:53:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254948191] [2022-09-16 11:53:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:55,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254948191] [2022-09-16 11:53:55,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254948191] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:55,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131440125] [2022-09-16 11:53:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:55,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:55,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:55,601 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 11:53:55,602 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 11:53:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:55,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:55,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:55,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:53:55,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131440125] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:55,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:53:55,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:53:55,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185185170] [2022-09-16 11:53:55,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:55,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:53:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:53:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:53:55,715 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-09-16 11:53:55,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 312 transitions, 990 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:55,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:55,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-09-16 11:53:55,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:57,560 INFO L130 PetriNetUnfolder]: 5926/13761 cut-off events. [2022-09-16 11:53:57,560 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-09-16 11:53:57,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 13761 events. 5926/13761 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 125046 event pairs, 3600 based on Foata normal form. 12/7108 useless extension candidates. Maximal degree in co-relation 18170. Up to 6588 conditions per place. [2022-09-16 11:53:57,649 INFO L137 encePairwiseOnDemand]: 295/312 looper letters, 95 selfloop transitions, 43 changer transitions 0/338 dead transitions. [2022-09-16 11:53:57,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 338 transitions, 1273 flow [2022-09-16 11:53:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:53:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:53:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1704 transitions. [2022-09-16 11:53:57,652 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2022-09-16 11:53:57,652 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1704 transitions. [2022-09-16 11:53:57,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1704 transitions. [2022-09-16 11:53:57,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:57,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1704 transitions. [2022-09-16 11:53:57,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 243.42857142857142) internal successors, (1704), 7 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:57,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:57,660 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:57,660 INFO L175 Difference]: Start difference. First operand has 285 places, 312 transitions, 990 flow. Second operand 7 states and 1704 transitions. [2022-09-16 11:53:57,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 338 transitions, 1273 flow [2022-09-16 11:53:57,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 338 transitions, 1157 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:57,670 INFO L231 Difference]: Finished difference. Result has 279 places, 300 transitions, 879 flow [2022-09-16 11:53:57,671 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=879, PETRI_PLACES=279, PETRI_TRANSITIONS=300} [2022-09-16 11:53:57,672 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 2 predicate places. [2022-09-16 11:53:57,672 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 300 transitions, 879 flow [2022-09-16 11:53:57,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:57,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:57,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 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] [2022-09-16 11:53:57,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:53:57,891 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 11:53:57,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:53:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 711027656, now seen corresponding path program 2 times [2022-09-16 11:53:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:57,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390773674] [2022-09-16 11:53:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390773674] [2022-09-16 11:53:58,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390773674] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151092254] [2022-09-16 11:53:58,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:53:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:58,116 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 11:53:58,117 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 11:53:58,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:53:58,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:53:58,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:53:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:53:58,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:53:58,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151092254] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:58,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:58,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:53:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168201215] [2022-09-16 11:53:58,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:58,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:53:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:53:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:53:58,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 312 [2022-09-16 11:53:58,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 300 transitions, 879 flow. Second operand has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:58,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:58,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 312 [2022-09-16 11:53:58,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:00,882 INFO L130 PetriNetUnfolder]: 4642/12366 cut-off events. [2022-09-16 11:54:00,882 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-09-16 11:54:00,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 12366 events. 4642/12366 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 111932 event pairs, 3108 based on Foata normal form. 6/7388 useless extension candidates. Maximal degree in co-relation 16494. Up to 990 conditions per place. [2022-09-16 11:54:01,030 INFO L137 encePairwiseOnDemand]: 281/312 looper letters, 255 selfloop transitions, 97 changer transitions 0/532 dead transitions. [2022-09-16 11:54:01,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 532 transitions, 2184 flow [2022-09-16 11:54:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:54:01,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:54:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10571 transitions. [2022-09-16 11:54:01,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6914573521716378 [2022-09-16 11:54:01,046 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10571 transitions. [2022-09-16 11:54:01,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10571 transitions. [2022-09-16 11:54:01,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:01,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10571 transitions. [2022-09-16 11:54:01,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 215.73469387755102) internal successors, (10571), 49 states have internal predecessors, (10571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:01,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:01,102 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 312.0) internal successors, (15600), 50 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:01,102 INFO L175 Difference]: Start difference. First operand has 279 places, 300 transitions, 879 flow. Second operand 49 states and 10571 transitions. [2022-09-16 11:54:01,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 532 transitions, 2184 flow [2022-09-16 11:54:01,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 532 transitions, 2115 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:54:01,114 INFO L231 Difference]: Finished difference. Result has 322 places, 337 transitions, 1216 flow [2022-09-16 11:54:01,114 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1216, PETRI_PLACES=322, PETRI_TRANSITIONS=337} [2022-09-16 11:54:01,115 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 45 predicate places. [2022-09-16 11:54:01,116 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 337 transitions, 1216 flow [2022-09-16 11:54:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 211.61111111111111) internal successors, (3809), 18 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:01,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:01,118 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:01,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:54:01,335 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 11:54:01,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2124152198, now seen corresponding path program 1 times [2022-09-16 11:54:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:01,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953427195] [2022-09-16 11:54:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953427195] [2022-09-16 11:54:01,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953427195] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:01,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518412152] [2022-09-16 11:54:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:01,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:01,476 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 11:54:01,477 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 11:54:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:54:01,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:01,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:01,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518412152] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:01,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:54:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150700621] [2022-09-16 11:54:01,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:01,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:54:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:54:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:54:01,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 312 [2022-09-16 11:54:01,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 337 transitions, 1216 flow. Second operand has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:01,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:01,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 312 [2022-09-16 11:54:01,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:06,377 INFO L130 PetriNetUnfolder]: 9946/26405 cut-off events. [2022-09-16 11:54:06,377 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-09-16 11:54:06,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42689 conditions, 26405 events. 9946/26405 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 249095 event pairs, 6660 based on Foata normal form. 16/15786 useless extension candidates. Maximal degree in co-relation 41989. Up to 1455 conditions per place. [2022-09-16 11:54:06,567 INFO L137 encePairwiseOnDemand]: 293/312 looper letters, 533 selfloop transitions, 160 changer transitions 0/899 dead transitions. [2022-09-16 11:54:06,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 899 transitions, 4511 flow [2022-09-16 11:54:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:54:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:54:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10741 transitions. [2022-09-16 11:54:06,580 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7824155011655012 [2022-09-16 11:54:06,581 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10741 transitions. [2022-09-16 11:54:06,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10741 transitions. [2022-09-16 11:54:06,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:06,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10741 transitions. [2022-09-16 11:54:06,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 244.11363636363637) internal successors, (10741), 44 states have internal predecessors, (10741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:06,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:06,615 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 312.0) internal successors, (14040), 45 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:06,615 INFO L175 Difference]: Start difference. First operand has 322 places, 337 transitions, 1216 flow. Second operand 44 states and 10741 transitions. [2022-09-16 11:54:06,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 899 transitions, 4511 flow [2022-09-16 11:54:06,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 899 transitions, 4257 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-09-16 11:54:06,631 INFO L231 Difference]: Finished difference. Result has 359 places, 430 transitions, 2103 flow [2022-09-16 11:54:06,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2103, PETRI_PLACES=359, PETRI_TRANSITIONS=430} [2022-09-16 11:54:06,634 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 82 predicate places. [2022-09-16 11:54:06,634 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 430 transitions, 2103 flow [2022-09-16 11:54:06,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 231.28125) internal successors, (7401), 32 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:06,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:06,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:06,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:54:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:06,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash -266320250, now seen corresponding path program 1 times [2022-09-16 11:54:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:06,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546518878] [2022-09-16 11:54:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:06,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:06,936 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 11:54:06,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:06,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546518878] [2022-09-16 11:54:06,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546518878] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:06,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:06,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:54:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880580213] [2022-09-16 11:54:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:06,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:54:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:54:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:54:06,942 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 312 [2022-09-16 11:54:06,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 430 transitions, 2103 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:06,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:06,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 312 [2022-09-16 11:54:06,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:11,154 INFO L130 PetriNetUnfolder]: 11506/29045 cut-off events. [2022-09-16 11:54:11,154 INFO L131 PetriNetUnfolder]: For 2156/2156 co-relation queries the response was YES. [2022-09-16 11:54:11,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47778 conditions, 29045 events. 11506/29045 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 278884 event pairs, 4485 based on Foata normal form. 645/18305 useless extension candidates. Maximal degree in co-relation 47172. Up to 10833 conditions per place. [2022-09-16 11:54:11,405 INFO L137 encePairwiseOnDemand]: 308/312 looper letters, 37 selfloop transitions, 2 changer transitions 0/445 dead transitions. [2022-09-16 11:54:11,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 445 transitions, 2213 flow [2022-09-16 11:54:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:54:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:54:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2022-09-16 11:54:11,407 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8771367521367521 [2022-09-16 11:54:11,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2022-09-16 11:54:11,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2022-09-16 11:54:11,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:11,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2022-09-16 11:54:11,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,409 INFO L175 Difference]: Start difference. First operand has 359 places, 430 transitions, 2103 flow. Second operand 3 states and 821 transitions. [2022-09-16 11:54:11,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 445 transitions, 2213 flow [2022-09-16 11:54:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 445 transitions, 2111 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-09-16 11:54:11,421 INFO L231 Difference]: Finished difference. Result has 347 places, 431 transitions, 2015 flow [2022-09-16 11:54:11,421 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2015, PETRI_PLACES=347, PETRI_TRANSITIONS=431} [2022-09-16 11:54:11,422 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 70 predicate places. [2022-09-16 11:54:11,422 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 431 transitions, 2015 flow [2022-09-16 11:54:11,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:11,423 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] [2022-09-16 11:54:11,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:54:11,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1153281669, now seen corresponding path program 1 times [2022-09-16 11:54:11,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:11,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896489529] [2022-09-16 11:54:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:11,496 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 11:54:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896489529] [2022-09-16 11:54:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896489529] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:11,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:54:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310106957] [2022-09-16 11:54:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:54:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:54:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:54:11,498 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 312 [2022-09-16 11:54:11,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 431 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:11,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 312 [2022-09-16 11:54:11,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:15,332 INFO L130 PetriNetUnfolder]: 8386/29390 cut-off events. [2022-09-16 11:54:15,332 INFO L131 PetriNetUnfolder]: For 3084/3084 co-relation queries the response was YES. [2022-09-16 11:54:15,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46024 conditions, 29390 events. 8386/29390 cut-off events. For 3084/3084 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 320644 event pairs, 1800 based on Foata normal form. 195/19775 useless extension candidates. Maximal degree in co-relation 45432. Up to 13068 conditions per place. [2022-09-16 11:54:15,558 INFO L137 encePairwiseOnDemand]: 308/312 looper letters, 33 selfloop transitions, 3 changer transitions 0/442 dead transitions. [2022-09-16 11:54:15,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 442 transitions, 2117 flow [2022-09-16 11:54:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:54:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:54:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-09-16 11:54:15,560 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8707264957264957 [2022-09-16 11:54:15,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-09-16 11:54:15,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-09-16 11:54:15,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:15,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-09-16 11:54:15,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:15,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:15,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:15,565 INFO L175 Difference]: Start difference. First operand has 347 places, 431 transitions, 2015 flow. Second operand 3 states and 815 transitions. [2022-09-16 11:54:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 442 transitions, 2117 flow [2022-09-16 11:54:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 442 transitions, 2114 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:54:15,576 INFO L231 Difference]: Finished difference. Result has 349 places, 433 transitions, 2032 flow [2022-09-16 11:54:15,577 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2032, PETRI_PLACES=349, PETRI_TRANSITIONS=433} [2022-09-16 11:54:15,577 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 72 predicate places. [2022-09-16 11:54:15,578 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 433 transitions, 2032 flow [2022-09-16 11:54:15,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:15,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:15,578 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] [2022-09-16 11:54:15,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:54:15,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash 500418665, now seen corresponding path program 1 times [2022-09-16 11:54:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:15,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798027978] [2022-09-16 11:54:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:15,637 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 11:54:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:15,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798027978] [2022-09-16 11:54:15,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798027978] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:15,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:15,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:54:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153509777] [2022-09-16 11:54:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:15,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:54:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:54:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:54:15,642 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 312 [2022-09-16 11:54:15,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 433 transitions, 2032 flow. Second operand has 6 states, 6 states have (on average 231.16666666666666) internal successors, (1387), 6 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:15,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:15,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 312 [2022-09-16 11:54:15,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:20,017 INFO L130 PetriNetUnfolder]: 8491/28747 cut-off events. [2022-09-16 11:54:20,018 INFO L131 PetriNetUnfolder]: For 6538/6538 co-relation queries the response was YES. [2022-09-16 11:54:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49899 conditions, 28747 events. 8491/28747 cut-off events. For 6538/6538 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 302051 event pairs, 6150 based on Foata normal form. 180/19102 useless extension candidates. Maximal degree in co-relation 49197. Up to 13453 conditions per place. [2022-09-16 11:54:20,278 INFO L137 encePairwiseOnDemand]: 297/312 looper letters, 202 selfloop transitions, 30 changer transitions 14/487 dead transitions. [2022-09-16 11:54:20,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 487 transitions, 2813 flow [2022-09-16 11:54:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:54:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:54:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2122 transitions. [2022-09-16 11:54:20,280 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7556980056980057 [2022-09-16 11:54:20,281 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2122 transitions. [2022-09-16 11:54:20,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2122 transitions. [2022-09-16 11:54:20,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:20,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2122 transitions. [2022-09-16 11:54:20,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.77777777777777) internal successors, (2122), 9 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,286 INFO L175 Difference]: Start difference. First operand has 349 places, 433 transitions, 2032 flow. Second operand 9 states and 2122 transitions. [2022-09-16 11:54:20,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 487 transitions, 2813 flow [2022-09-16 11:54:20,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 487 transitions, 2808 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:54:20,300 INFO L231 Difference]: Finished difference. Result has 357 places, 434 transitions, 2106 flow [2022-09-16 11:54:20,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2106, PETRI_PLACES=357, PETRI_TRANSITIONS=434} [2022-09-16 11:54:20,302 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 80 predicate places. [2022-09-16 11:54:20,302 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 434 transitions, 2106 flow [2022-09-16 11:54:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.16666666666666) internal successors, (1387), 6 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:20,302 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] [2022-09-16 11:54:20,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:54:20,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash 476842010, now seen corresponding path program 1 times [2022-09-16 11:54:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:20,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246662737] [2022-09-16 11:54:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:54:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:20,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246662737] [2022-09-16 11:54:20,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246662737] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:20,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:20,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:54:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594541309] [2022-09-16 11:54:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:54:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:54:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:54:20,543 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 312 [2022-09-16 11:54:20,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 434 transitions, 2106 flow. Second operand has 6 states, 6 states have (on average 231.83333333333334) internal successors, (1391), 6 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:20,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 312 [2022-09-16 11:54:20,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:25,462 INFO L130 PetriNetUnfolder]: 8521/31303 cut-off events. [2022-09-16 11:54:25,462 INFO L131 PetriNetUnfolder]: For 9445/9445 co-relation queries the response was YES. [2022-09-16 11:54:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58051 conditions, 31303 events. 8521/31303 cut-off events. For 9445/9445 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 337254 event pairs, 6150 based on Foata normal form. 510/21823 useless extension candidates. Maximal degree in co-relation 53964. Up to 13891 conditions per place. [2022-09-16 11:54:25,732 INFO L137 encePairwiseOnDemand]: 301/312 looper letters, 282 selfloop transitions, 29 changer transitions 0/552 dead transitions. [2022-09-16 11:54:25,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 552 transitions, 3454 flow [2022-09-16 11:54:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:54:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:54:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2132 transitions. [2022-09-16 11:54:25,735 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2022-09-16 11:54:25,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2132 transitions. [2022-09-16 11:54:25,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2132 transitions. [2022-09-16 11:54:25,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:25,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2132 transitions. [2022-09-16 11:54:25,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.88888888888889) internal successors, (2132), 9 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:25,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:25,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:25,740 INFO L175 Difference]: Start difference. First operand has 357 places, 434 transitions, 2106 flow. Second operand 9 states and 2132 transitions. [2022-09-16 11:54:25,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 552 transitions, 3454 flow [2022-09-16 11:54:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 552 transitions, 3404 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:54:25,764 INFO L231 Difference]: Finished difference. Result has 364 places, 435 transitions, 2144 flow [2022-09-16 11:54:25,765 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=364, PETRI_TRANSITIONS=435} [2022-09-16 11:54:25,766 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 87 predicate places. [2022-09-16 11:54:25,766 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 435 transitions, 2144 flow [2022-09-16 11:54:25,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.83333333333334) internal successors, (1391), 6 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:25,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:25,767 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] [2022-09-16 11:54:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:54:25,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 863266134, now seen corresponding path program 1 times [2022-09-16 11:54:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375826948] [2022-09-16 11:54:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:54:25,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:25,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375826948] [2022-09-16 11:54:25,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375826948] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:25,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:25,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:54:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366735070] [2022-09-16 11:54:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:25,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:54:25,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:54:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:54:25,853 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 312 [2022-09-16 11:54:25,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 435 transitions, 2144 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:25,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:25,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 312 [2022-09-16 11:54:25,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:29,783 INFO L130 PetriNetUnfolder]: 7096/26083 cut-off events. [2022-09-16 11:54:29,783 INFO L131 PetriNetUnfolder]: For 7012/7012 co-relation queries the response was YES. [2022-09-16 11:54:29,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49010 conditions, 26083 events. 7096/26083 cut-off events. For 7012/7012 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 273232 event pairs, 3960 based on Foata normal form. 255/17878 useless extension candidates. Maximal degree in co-relation 45536. Up to 10713 conditions per place. [2022-09-16 11:54:29,992 INFO L137 encePairwiseOnDemand]: 306/312 looper letters, 39 selfloop transitions, 4 changer transitions 0/442 dead transitions. [2022-09-16 11:54:29,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 442 transitions, 2257 flow [2022-09-16 11:54:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:54:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:54:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 809 transitions. [2022-09-16 11:54:29,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8643162393162394 [2022-09-16 11:54:29,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 809 transitions. [2022-09-16 11:54:29,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 809 transitions. [2022-09-16 11:54:29,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:29,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 809 transitions. [2022-09-16 11:54:29,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:29,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:29,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:29,998 INFO L175 Difference]: Start difference. First operand has 364 places, 435 transitions, 2144 flow. Second operand 3 states and 809 transitions. [2022-09-16 11:54:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 442 transitions, 2257 flow [2022-09-16 11:54:30,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 442 transitions, 2221 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:54:30,016 INFO L231 Difference]: Finished difference. Result has 362 places, 436 transitions, 2130 flow [2022-09-16 11:54:30,016 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2130, PETRI_PLACES=362, PETRI_TRANSITIONS=436} [2022-09-16 11:54:30,017 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 85 predicate places. [2022-09-16 11:54:30,017 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 436 transitions, 2130 flow [2022-09-16 11:54:30,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:30,017 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] [2022-09-16 11:54:30,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:54:30,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2130074623, now seen corresponding path program 1 times [2022-09-16 11:54:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:30,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568942716] [2022-09-16 11:54:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:54:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568942716] [2022-09-16 11:54:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568942716] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:30,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:30,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:54:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766123143] [2022-09-16 11:54:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:54:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:54:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:54:30,079 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 312 [2022-09-16 11:54:30,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 436 transitions, 2130 flow. Second operand has 5 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:30,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 312 [2022-09-16 11:54:30,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:49,717 INFO L130 PetriNetUnfolder]: 48631/127993 cut-off events. [2022-09-16 11:54:49,718 INFO L131 PetriNetUnfolder]: For 31050/31605 co-relation queries the response was YES. [2022-09-16 11:54:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247303 conditions, 127993 events. 48631/127993 cut-off events. For 31050/31605 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 1529403 event pairs, 30210 based on Foata normal form. 0/88543 useless extension candidates. Maximal degree in co-relation 242608. Up to 59106 conditions per place. [2022-09-16 11:54:51,266 INFO L137 encePairwiseOnDemand]: 303/312 looper letters, 80 selfloop transitions, 6 changer transitions 0/473 dead transitions. [2022-09-16 11:54:51,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 473 transitions, 2408 flow [2022-09-16 11:54:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:54:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:54:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1281 transitions. [2022-09-16 11:54:51,268 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8211538461538461 [2022-09-16 11:54:51,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1281 transitions. [2022-09-16 11:54:51,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1281 transitions. [2022-09-16 11:54:51,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:51,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1281 transitions. [2022-09-16 11:54:51,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.2) internal successors, (1281), 5 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:51,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:51,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:51,271 INFO L175 Difference]: Start difference. First operand has 362 places, 436 transitions, 2130 flow. Second operand 5 states and 1281 transitions. [2022-09-16 11:54:51,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 473 transitions, 2408 flow [2022-09-16 11:54:51,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 473 transitions, 2403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:54:51,295 INFO L231 Difference]: Finished difference. Result has 367 places, 439 transitions, 2163 flow [2022-09-16 11:54:51,296 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2163, PETRI_PLACES=367, PETRI_TRANSITIONS=439} [2022-09-16 11:54:51,296 INFO L287 CegarLoopForPetriNet]: 277 programPoint places, 90 predicate places. [2022-09-16 11:54:51,296 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 439 transitions, 2163 flow [2022-09-16 11:54:51,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:51,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:51,297 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] [2022-09-16 11:54:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:54:51,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-09-16 11:54:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2130041949, now seen corresponding path program 1 times [2022-09-16 11:54:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:51,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677687816] [2022-09-16 11:54:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:54:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:51,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677687816] [2022-09-16 11:54:51,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677687816] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:51,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:51,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:54:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780712593] [2022-09-16 11:54:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:54:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:54:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:54:51,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 312 [2022-09-16 11:54:51,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 439 transitions, 2163 flow. Second operand has 5 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:51,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:51,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 312 [2022-09-16 11:54:51,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand