./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:06:53,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:06:53,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:06:53,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:06:53,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:06:53,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:06:53,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:06:53,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:06:53,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:06:53,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:06:53,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:06:53,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:06:53,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:06:53,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:06:53,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:06:53,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:06:53,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:06:53,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:06:53,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:06:53,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:06:53,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:06:53,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:06:53,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:06:53,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:06:53,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:06:53,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:06:53,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:06:53,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:06:53,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:06:53,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:06:53,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:06:53,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:06:53,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:06:53,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:06:53,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:06:53,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:06:53,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:06:53,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:06:53,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:06:53,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:06:53,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:06:53,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:06:53,675 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:06:53,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:06:53,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:06:53,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:06:53,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:06:53,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:06:53,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:06:53,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:06:53,678 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:06:53,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:06:53,679 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:06:53,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:06:53,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:06:53,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:06:53,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:06:53,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:06:53,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:06:53,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:06:53,681 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:06:53,681 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:06:53,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:06:53,682 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:06:53,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:06:53,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:06:53,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:06:53,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:06:53,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:06:53,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:06:53,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:06:53,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:06:53,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:06:53,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:06:53,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:06:53,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:06:53,684 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:06:53,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:06:53,685 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:06:53,685 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:06:53,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:06:54,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:06:54,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:06:54,021 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:06:54,021 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:06:54,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-30 11:06:55,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:06:55,435 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:06:55,436 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-30 11:06:55,443 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61a86507/911a7c0c59554dfd98235927af356d09/FLAGb750ecf2b [2023-08-30 11:06:55,455 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61a86507/911a7c0c59554dfd98235927af356d09 [2023-08-30 11:06:55,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:06:55,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:06:55,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:06:55,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:06:55,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:06:55,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8dc1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55, skipping insertion in model container [2023-08-30 11:06:55,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:06:55,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:06:55,705 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-08-30 11:06:55,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:06:55,725 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:06:55,767 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-08-30 11:06:55,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:06:55,794 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:06:55,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55 WrapperNode [2023-08-30 11:06:55,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:06:55,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:06:55,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:06:55,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:06:55,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,847 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-08-30 11:06:55,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:06:55,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:06:55,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:06:55,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:06:55,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:06:55,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:06:55,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:06:55,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:06:55,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (1/1) ... [2023-08-30 11:06:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:06:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:06:55,940 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) [2023-08-30 11:06:55,971 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 [2023-08-30 11:06:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:06:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:06:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:06:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:06:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:06:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:06:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:06:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:06:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:06:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:06:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:06:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:06:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:06:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:06:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:06:56,002 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:06:56,149 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:06:56,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:06:56,553 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:06:56,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:06:56,568 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:06:56,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:06:56 BoogieIcfgContainer [2023-08-30 11:06:56,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:06:56,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:06:56,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:06:56,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:06:56,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:06:55" (1/3) ... [2023-08-30 11:06:56,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24069440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:06:56, skipping insertion in model container [2023-08-30 11:06:56,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:06:55" (2/3) ... [2023-08-30 11:06:56,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24069440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:06:56, skipping insertion in model container [2023-08-30 11:06:56,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:06:56" (3/3) ... [2023-08-30 11:06:56,577 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-08-30 11:06:56,585 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:06:56,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:06:56,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 11:06:56,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:06:56,698 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:06:56,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 331 transitions, 686 flow [2023-08-30 11:06:56,883 INFO L130 PetriNetUnfolder]: 29/328 cut-off events. [2023-08-30 11:06:56,883 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:06:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 328 events. 29/328 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 547 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 11:06:56,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 331 transitions, 686 flow [2023-08-30 11:06:56,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 304 transitions, 623 flow [2023-08-30 11:06:56,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:06:56,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 11:06:56,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 11:06:56,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 304 transitions, 623 flow [2023-08-30 11:06:57,000 INFO L130 PetriNetUnfolder]: 27/304 cut-off events. [2023-08-30 11:06:57,000 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:06:57,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 304 events. 27/304 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 541 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 11:06:57,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2023-08-30 11:07:05,861 INFO L134 LiptonReduction]: Checked pairs total: 16072 [2023-08-30 11:07:05,861 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-08-30 11:07:05,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:07:05,879 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=true, 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;@3a24de39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:07:05,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-30 11:07:05,882 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:07:05,882 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:07:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:05,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:07:05,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:05,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:05,887 INFO L85 PathProgramCache]: Analyzing trace with hash 40201, now seen corresponding path program 1 times [2023-08-30 11:07:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623735340] [2023-08-30 11:07:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:06,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623735340] [2023-08-30 11:07:06,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623735340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:06,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:06,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:07:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589300854] [2023-08-30 11:07:06,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:06,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:06,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:06,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-08-30 11:07:06,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:06,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:06,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-08-30 11:07:06,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:07,930 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2023-08-30 11:07:07,931 INFO L131 PetriNetUnfolder]: For 668/668 co-relation queries the response was YES. [2023-08-30 11:07:07,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 83082 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2023-08-30 11:07:08,049 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-08-30 11:07:08,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2023-08-30 11:07:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-30 11:07:08,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154743784880771 [2023-08-30 11:07:08,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-30 11:07:08,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-30 11:07:08,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:08,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-30 11:07:08,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:08,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:08,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:08,095 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1016 transitions. [2023-08-30 11:07:08,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2023-08-30 11:07:08,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:08,117 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2023-08-30 11:07:08,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-08-30 11:07:08,123 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 11:07:08,124 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2023-08-30 11:07:08,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:08,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:08,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:07:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:07:08,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:08,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1247914, now seen corresponding path program 1 times [2023-08-30 11:07:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:08,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390146172] [2023-08-30 11:07:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390146172] [2023-08-30 11:07:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390146172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:08,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328821094] [2023-08-30 11:07:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:08,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:08,257 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) [2023-08-30 11:07:08,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:07:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:08,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:07:08,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:08,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328821094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:08,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:08,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:07:08,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374223545] [2023-08-30 11:07:08,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:08,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:07:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:07:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:07:08,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-08-30 11:07:08,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:08,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:08,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-08-30 11:07:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:11,430 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2023-08-30 11:07:11,430 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2023-08-30 11:07:11,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 1708. Compared 231205 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2023-08-30 11:07:11,658 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-08-30 11:07:11,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2023-08-30 11:07:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:07:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:07:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2382 transitions. [2023-08-30 11:07:11,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179386823222439 [2023-08-30 11:07:11,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2382 transitions. [2023-08-30 11:07:11,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2382 transitions. [2023-08-30 11:07:11,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:11,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2382 transitions. [2023-08-30 11:07:11,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 340.2857142857143) internal successors, (2382), 7 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:11,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:11,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:11,681 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2382 transitions. [2023-08-30 11:07:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2023-08-30 11:07:11,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:11,687 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2023-08-30 11:07:11,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-08-30 11:07:11,688 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 11:07:11,688 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2023-08-30 11:07:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:11,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:11,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:07:11,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:11,896 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 [2023-08-30 11:07:11,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:11,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash 38686537, now seen corresponding path program 1 times [2023-08-30 11:07:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802047262] [2023-08-30 11:07:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:11,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802047262] [2023-08-30 11:07:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802047262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203061965] [2023-08-30 11:07:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:11,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-08-30 11:07:11,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:11,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:11,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-08-30 11:07:11,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:14,273 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2023-08-30 11:07:14,273 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2023-08-30 11:07:14,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 1847. Compared 232998 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 40994 conditions per place. [2023-08-30 11:07:14,485 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-30 11:07:14,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 450 flow [2023-08-30 11:07:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2023-08-30 11:07:14,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487062404870624 [2023-08-30 11:07:14,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2023-08-30 11:07:14,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2023-08-30 11:07:14,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:14,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2023-08-30 11:07:14,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:14,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:14,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:14,497 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 3 states and 960 transitions. [2023-08-30 11:07:14,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 450 flow [2023-08-30 11:07:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 420 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:14,500 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 274 flow [2023-08-30 11:07:14,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-08-30 11:07:14,502 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 11:07:14,502 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 274 flow [2023-08-30 11:07:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:14,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:14,503 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:07:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:07:14,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:14,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1476890216, now seen corresponding path program 2 times [2023-08-30 11:07:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:14,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300531097] [2023-08-30 11:07:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:14,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300531097] [2023-08-30 11:07:14,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300531097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:14,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252182272] [2023-08-30 11:07:14,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:07:14,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:14,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:14,641 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) [2023-08-30 11:07:14,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:07:14,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:07:14,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:07:14,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:07:14,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:07:14,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252182272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:07:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107541331] [2023-08-30 11:07:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:14,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:07:14,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 657 [2023-08-30 11:07:14,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:14,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:14,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 657 [2023-08-30 11:07:14,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:16,866 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2023-08-30 11:07:16,867 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2023-08-30 11:07:16,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83320 conditions, 40993 events. 30341/40993 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 1847. Compared 232971 event pairs, 22150 based on Foata normal form. 1/20132 useless extension candidates. Maximal degree in co-relation 83308. Up to 40988 conditions per place. [2023-08-30 11:07:17,146 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 11:07:17,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 410 flow [2023-08-30 11:07:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2023-08-30 11:07:17,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901065449010654 [2023-08-30 11:07:17,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2023-08-30 11:07:17,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2023-08-30 11:07:17,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:17,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2023-08-30 11:07:17,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,159 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 274 flow. Second operand 3 states and 966 transitions. [2023-08-30 11:07:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 410 flow [2023-08-30 11:07:17,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:17,161 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2023-08-30 11:07:17,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-08-30 11:07:17,162 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 11:07:17,163 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2023-08-30 11:07:17,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:17,164 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:07:17,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:17,372 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,SelfDestructingSolverStorable3 [2023-08-30 11:07:17,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:17,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1845262550, now seen corresponding path program 1 times [2023-08-30 11:07:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63024347] [2023-08-30 11:07:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:17,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63024347] [2023-08-30 11:07:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63024347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:17,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438118430] [2023-08-30 11:07:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:17,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:17,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:17,499 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) [2023-08-30 11:07:17,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:07:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:17,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:07:17,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438118430] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:17,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:07:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256070358] [2023-08-30 11:07:17,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:07:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:07:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:07:17,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 657 [2023-08-30 11:07:17,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 302.15384615384613) internal successors, (3928), 13 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:17,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:17,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 657 [2023-08-30 11:07:17,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:22,801 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2023-08-30 11:07:22,801 INFO L131 PetriNetUnfolder]: For 782/782 co-relation queries the response was YES. [2023-08-30 11:07:22,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 2486. Compared 533876 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2023-08-30 11:07:23,383 INFO L137 encePairwiseOnDemand]: 649/657 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2023-08-30 11:07:23,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2023-08-30 11:07:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:07:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:07:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4177 transitions. [2023-08-30 11:07:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298072044647387 [2023-08-30 11:07:23,395 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4177 transitions. [2023-08-30 11:07:23,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4177 transitions. [2023-08-30 11:07:23,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:23,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4177 transitions. [2023-08-30 11:07:23,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 348.0833333333333) internal successors, (4177), 12 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 657.0) internal successors, (8541), 13 states have internal predecessors, (8541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,428 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 657.0) internal successors, (8541), 13 states have internal predecessors, (8541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,428 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4177 transitions. [2023-08-30 11:07:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2023-08-30 11:07:23,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:23,436 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2023-08-30 11:07:23,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2023-08-30 11:07:23,438 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-30 11:07:23,438 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2023-08-30 11:07:23,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 302.15384615384613) internal successors, (3928), 13 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:23,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:23,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:23,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:23,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -834736654, now seen corresponding path program 1 times [2023-08-30 11:07:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223776254] [2023-08-30 11:07:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223776254] [2023-08-30 11:07:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223776254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:23,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827868550] [2023-08-30 11:07:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:23,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-08-30 11:07:23,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:23,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-08-30 11:07:23,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:32,447 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2023-08-30 11:07:32,448 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2023-08-30 11:07:32,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317922 conditions, 156445 events. 115501/156445 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 4270. Compared 1037679 event pairs, 48730 based on Foata normal form. 0/78583 useless extension candidates. Maximal degree in co-relation 317903. Up to 90182 conditions per place. [2023-08-30 11:07:33,481 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-30 11:07:33,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 978 flow [2023-08-30 11:07:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-08-30 11:07:33,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164890918315576 [2023-08-30 11:07:33,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-08-30 11:07:33,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-08-30 11:07:33,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:33,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-08-30 11:07:33,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:33,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:33,491 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1018 transitions. [2023-08-30 11:07:33,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 978 flow [2023-08-30 11:07:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 834 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:33,496 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2023-08-30 11:07:33,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2023-08-30 11:07:33,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-30 11:07:33,497 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2023-08-30 11:07:33,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:33,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:33,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:07:33,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:33,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -834735184, now seen corresponding path program 1 times [2023-08-30 11:07:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:33,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710540404] [2023-08-30 11:07:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:33,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710540404] [2023-08-30 11:07:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710540404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:33,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:33,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109668191] [2023-08-30 11:07:33,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:33,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:07:33,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 657 [2023-08-30 11:07:33,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:33,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:33,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 657 [2023-08-30 11:07:33,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:50,345 INFO L130 PetriNetUnfolder]: 213566/287611 cut-off events. [2023-08-30 11:07:50,346 INFO L131 PetriNetUnfolder]: For 22386/22386 co-relation queries the response was YES. [2023-08-30 11:07:51,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607569 conditions, 287611 events. 213566/287611 cut-off events. For 22386/22386 co-relation queries the response was YES. Maximal size of possible extension queue 7121. Compared 1942832 event pairs, 155584 based on Foata normal form. 0/158292 useless extension candidates. Maximal degree in co-relation 607550. Up to 145753 conditions per place. [2023-08-30 11:07:52,193 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 180 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2023-08-30 11:07:52,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 184 transitions, 1194 flow [2023-08-30 11:07:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:07:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:07:52,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1285 transitions. [2023-08-30 11:07:52,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889649923896499 [2023-08-30 11:07:52,196 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1285 transitions. [2023-08-30 11:07:52,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1285 transitions. [2023-08-30 11:07:52,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:52,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1285 transitions. [2023-08-30 11:07:52,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:52,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:52,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:52,204 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 481 flow. Second operand 4 states and 1285 transitions. [2023-08-30 11:07:52,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 184 transitions, 1194 flow [2023-08-30 11:07:52,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 184 transitions, 1190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:52,261 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 498 flow [2023-08-30 11:07:52,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=76, PETRI_TRANSITIONS=105} [2023-08-30 11:07:52,262 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-30 11:07:52,262 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 498 flow [2023-08-30 11:07:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:52,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:52,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:07:52,263 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:52,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 727280455, now seen corresponding path program 1 times [2023-08-30 11:07:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51440568] [2023-08-30 11:07:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51440568] [2023-08-30 11:07:52,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51440568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707196735] [2023-08-30 11:07:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:52,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:52,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:52,413 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) [2023-08-30 11:07:52,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:07:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:52,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:07:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:52,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:52,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707196735] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:52,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:07:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-08-30 11:07:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527328079] [2023-08-30 11:07:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 11:07:52,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 657 [2023-08-30 11:07:52,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 105 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:52,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:52,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 657 [2023-08-30 11:07:52,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:08,357 INFO L130 PetriNetUnfolder]: 198980/269109 cut-off events. [2023-08-30 11:08:08,357 INFO L131 PetriNetUnfolder]: For 33672/33672 co-relation queries the response was YES. [2023-08-30 11:08:09,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570064 conditions, 269109 events. 198980/269109 cut-off events. For 33672/33672 co-relation queries the response was YES. Maximal size of possible extension queue 6703. Compared 1822220 event pairs, 146938 based on Foata normal form. 7832/164738 useless extension candidates. Maximal degree in co-relation 570042. Up to 269109 conditions per place. [2023-08-30 11:08:09,954 INFO L137 encePairwiseOnDemand]: 655/657 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-30 11:08:09,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 103 transitions, 694 flow [2023-08-30 11:08:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-08-30 11:08:09,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606798579401319 [2023-08-30 11:08:09,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-08-30 11:08:09,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-08-30 11:08:09,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:09,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-08-30 11:08:09,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,962 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 498 flow. Second operand 3 states and 908 transitions. [2023-08-30 11:08:09,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 103 transitions, 694 flow [2023-08-30 11:08:09,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 686 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:09,986 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 482 flow [2023-08-30 11:08:09,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-08-30 11:08:09,986 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-30 11:08:09,986 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 482 flow [2023-08-30 11:08:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:09,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:09,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:10,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:10,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:10,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 727280578, now seen corresponding path program 1 times [2023-08-30 11:08:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834077851] [2023-08-30 11:08:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834077851] [2023-08-30 11:08:10,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834077851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:08:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267280430] [2023-08-30 11:08:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:10,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:10,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:10,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:08:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:10,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:08:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:08:10,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267280430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:10,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:08:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:08:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772657813] [2023-08-30 11:08:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:10,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:08:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:08:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:08:10,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-08-30 11:08:10,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:10,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:10,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-08-30 11:08:10,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:24,935 INFO L130 PetriNetUnfolder]: 188310/254523 cut-off events. [2023-08-30 11:08:24,936 INFO L131 PetriNetUnfolder]: For 18373/18373 co-relation queries the response was YES. [2023-08-30 11:08:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536467 conditions, 254523 events. 188310/254523 cut-off events. For 18373/18373 co-relation queries the response was YES. Maximal size of possible extension queue 6330. Compared 1711744 event pairs, 138292 based on Foata normal form. 3916/151604 useless extension candidates. Maximal degree in co-relation 536445. Up to 254511 conditions per place. [2023-08-30 11:08:26,429 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 90 selfloop transitions, 12 changer transitions 0/102 dead transitions. [2023-08-30 11:08:26,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 682 flow [2023-08-30 11:08:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:08:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:08:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1272 transitions. [2023-08-30 11:08:26,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840182648401826 [2023-08-30 11:08:26,433 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1272 transitions. [2023-08-30 11:08:26,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1272 transitions. [2023-08-30 11:08:26,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:26,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1272 transitions. [2023-08-30 11:08:26,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:26,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:26,439 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:26,440 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 482 flow. Second operand 4 states and 1272 transitions. [2023-08-30 11:08:26,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 682 flow [2023-08-30 11:08:26,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 102 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:26,464 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 500 flow [2023-08-30 11:08:26,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2023-08-30 11:08:26,466 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-30 11:08:26,466 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 500 flow [2023-08-30 11:08:26,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:26,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:26,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:26,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:08:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:26,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:26,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1016688971, now seen corresponding path program 1 times [2023-08-30 11:08:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124798257] [2023-08-30 11:08:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:26,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124798257] [2023-08-30 11:08:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124798257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:26,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:26,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:08:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719483021] [2023-08-30 11:08:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:26,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:08:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:08:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:08:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-08-30 11:08:26,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:26,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:26,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-08-30 11:08:26,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:42,754 INFO L130 PetriNetUnfolder]: 186864/252541 cut-off events. [2023-08-30 11:08:42,754 INFO L131 PetriNetUnfolder]: For 14508/14508 co-relation queries the response was YES. [2023-08-30 11:08:43,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532294 conditions, 252541 events. 186864/252541 cut-off events. For 14508/14508 co-relation queries the response was YES. Maximal size of possible extension queue 6304. Compared 1706331 event pairs, 125290 based on Foata normal form. 0/146779 useless extension candidates. Maximal degree in co-relation 532272. Up to 211539 conditions per place. [2023-08-30 11:08:44,443 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 144 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2023-08-30 11:08:44,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 1005 flow [2023-08-30 11:08:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:08:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:08:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2163 transitions. [2023-08-30 11:08:44,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703196347031963 [2023-08-30 11:08:44,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2163 transitions. [2023-08-30 11:08:44,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2163 transitions. [2023-08-30 11:08:44,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:44,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2163 transitions. [2023-08-30 11:08:44,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:44,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:44,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:44,457 INFO L175 Difference]: Start difference. First operand has 75 places, 102 transitions, 500 flow. Second operand 7 states and 2163 transitions. [2023-08-30 11:08:44,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 1005 flow [2023-08-30 11:08:44,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 170 transitions, 992 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:44,483 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 587 flow [2023-08-30 11:08:44,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 11:08:44,484 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-08-30 11:08:44,484 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 587 flow [2023-08-30 11:08:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:44,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:44,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:08:44,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:44,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1016689078, now seen corresponding path program 1 times [2023-08-30 11:08:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890297166] [2023-08-30 11:08:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890297166] [2023-08-30 11:08:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890297166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:44,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:44,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:08:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409809513] [2023-08-30 11:08:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:44,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:08:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:08:44,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:08:44,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-08-30 11:08:44,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:44,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:44,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-08-30 11:08:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:59,200 INFO L130 PetriNetUnfolder]: 178911/241640 cut-off events. [2023-08-30 11:08:59,200 INFO L131 PetriNetUnfolder]: For 24277/24277 co-relation queries the response was YES. [2023-08-30 11:09:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520356 conditions, 241640 events. 178911/241640 cut-off events. For 24277/24277 co-relation queries the response was YES. Maximal size of possible extension queue 5893. Compared 1610101 event pairs, 124699 based on Foata normal form. 2948/153032 useless extension candidates. Maximal degree in co-relation 520331. Up to 116371 conditions per place. [2023-08-30 11:09:00,818 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 193 selfloop transitions, 15 changer transitions 0/208 dead transitions. [2023-08-30 11:09:00,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 208 transitions, 1463 flow [2023-08-30 11:09:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:09:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:09:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1877 transitions. [2023-08-30 11:09:00,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47615423642820903 [2023-08-30 11:09:00,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1877 transitions. [2023-08-30 11:09:00,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1877 transitions. [2023-08-30 11:09:00,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:00,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1877 transitions. [2023-08-30 11:09:00,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:00,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:00,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:00,832 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 587 flow. Second operand 6 states and 1877 transitions. [2023-08-30 11:09:00,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 208 transitions, 1463 flow [2023-08-30 11:09:00,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 208 transitions, 1446 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:09:00,890 INFO L231 Difference]: Finished difference. Result has 88 places, 116 transitions, 767 flow [2023-08-30 11:09:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=88, PETRI_TRANSITIONS=116} [2023-08-30 11:09:00,891 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2023-08-30 11:09:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 116 transitions, 767 flow [2023-08-30 11:09:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:09:00,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:00,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1016689010, now seen corresponding path program 1 times [2023-08-30 11:09:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:00,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609342721] [2023-08-30 11:09:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:09:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609342721] [2023-08-30 11:09:00,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609342721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:00,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:00,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:09:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375754915] [2023-08-30 11:09:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:00,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:09:00,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:09:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:09:00,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-08-30 11:09:00,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 116 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:00,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:00,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-08-30 11:09:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:28,161 INFO L130 PetriNetUnfolder]: 303360/410389 cut-off events. [2023-08-30 11:09:28,162 INFO L131 PetriNetUnfolder]: For 50148/50148 co-relation queries the response was YES. [2023-08-30 11:09:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908784 conditions, 410389 events. 303360/410389 cut-off events. For 50148/50148 co-relation queries the response was YES. Maximal size of possible extension queue 9805. Compared 2960906 event pairs, 130609 based on Foata normal form. 0/262829 useless extension candidates. Maximal degree in co-relation 908756. Up to 241641 conditions per place. [2023-08-30 11:09:31,470 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-30 11:09:31,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 154 transitions, 1183 flow [2023-08-30 11:09:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-30 11:09:31,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134449518011162 [2023-08-30 11:09:31,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-30 11:09:31,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-30 11:09:31,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:31,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-30 11:09:31,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:31,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:31,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:31,475 INFO L175 Difference]: Start difference. First operand has 88 places, 116 transitions, 767 flow. Second operand 3 states and 1012 transitions. [2023-08-30 11:09:31,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 154 transitions, 1183 flow [2023-08-30 11:09:31,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:31,613 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 778 flow [2023-08-30 11:09:31,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=778, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2023-08-30 11:09:31,613 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2023-08-30 11:09:31,614 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 778 flow [2023-08-30 11:09:31,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:31,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:31,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:09:31,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:31,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 977009876, now seen corresponding path program 1 times [2023-08-30 11:09:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837655565] [2023-08-30 11:09:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:09:31,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:31,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837655565] [2023-08-30 11:09:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837655565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:31,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:09:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553829950] [2023-08-30 11:09:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:31,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:09:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:09:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:09:31,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 657 [2023-08-30 11:09:31,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:31,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:31,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 657 [2023-08-30 11:09:31,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:54,087 INFO L130 PetriNetUnfolder]: 210082/287291 cut-off events. [2023-08-30 11:09:54,087 INFO L131 PetriNetUnfolder]: For 74258/74258 co-relation queries the response was YES. [2023-08-30 11:09:55,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665267 conditions, 287291 events. 210082/287291 cut-off events. For 74258/74258 co-relation queries the response was YES. Maximal size of possible extension queue 7162. Compared 2026125 event pairs, 135567 based on Foata normal form. 0/198587 useless extension candidates. Maximal degree in co-relation 665238. Up to 216106 conditions per place. [2023-08-30 11:09:56,262 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 203 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2023-08-30 11:09:56,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 207 transitions, 1547 flow [2023-08-30 11:09:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:09:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:09:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1588 transitions. [2023-08-30 11:09:56,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834094368340944 [2023-08-30 11:09:56,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1588 transitions. [2023-08-30 11:09:56,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1588 transitions. [2023-08-30 11:09:56,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:56,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1588 transitions. [2023-08-30 11:09:56,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.6) internal successors, (1588), 5 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:56,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:56,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:56,270 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 778 flow. Second operand 5 states and 1588 transitions. [2023-08-30 11:09:56,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 207 transitions, 1547 flow [2023-08-30 11:09:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 207 transitions, 1541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:56,531 INFO L231 Difference]: Finished difference. Result has 95 places, 118 transitions, 795 flow [2023-08-30 11:09:56,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=95, PETRI_TRANSITIONS=118} [2023-08-30 11:09:56,532 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-30 11:09:56,532 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 118 transitions, 795 flow [2023-08-30 11:09:56,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:56,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:56,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:56,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:09:56,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:56,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1124717240, now seen corresponding path program 1 times [2023-08-30 11:09:56,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:56,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983992990] [2023-08-30 11:09:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:56,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:09:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983992990] [2023-08-30 11:09:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983992990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:09:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203134251] [2023-08-30 11:09:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:56,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:56,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:56,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:09:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:09:56,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:09:56,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203134251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:09:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 11:09:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801735613] [2023-08-30 11:09:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:09:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:09:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:09:56,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-08-30 11:09:56,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:56,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:56,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-08-30 11:09:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:10:15,591 INFO L130 PetriNetUnfolder]: 194176/265489 cut-off events. [2023-08-30 11:10:15,591 INFO L131 PetriNetUnfolder]: For 92671/92671 co-relation queries the response was YES. [2023-08-30 11:10:17,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612870 conditions, 265489 events. 194176/265489 cut-off events. For 92671/92671 co-relation queries the response was YES. Maximal size of possible extension queue 6522. Compared 1834210 event pairs, 147558 based on Foata normal form. 5896/194541 useless extension candidates. Maximal degree in co-relation 612838. Up to 265442 conditions per place. [2023-08-30 11:10:17,802 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 93 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2023-08-30 11:10:17,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 116 transitions, 1014 flow [2023-08-30 11:10:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:10:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:10:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1271 transitions. [2023-08-30 11:10:17,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836377473363775 [2023-08-30 11:10:17,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1271 transitions. [2023-08-30 11:10:17,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1271 transitions. [2023-08-30 11:10:17,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:10:17,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1271 transitions. [2023-08-30 11:10:17,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:17,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:17,809 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:17,809 INFO L175 Difference]: Start difference. First operand has 95 places, 118 transitions, 795 flow. Second operand 4 states and 1271 transitions. [2023-08-30 11:10:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 116 transitions, 1014 flow [2023-08-30 11:10:17,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 930 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:10:17,934 INFO L231 Difference]: Finished difference. Result has 91 places, 116 transitions, 744 flow [2023-08-30 11:10:17,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=91, PETRI_TRANSITIONS=116} [2023-08-30 11:10:17,935 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-08-30 11:10:17,935 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 116 transitions, 744 flow [2023-08-30 11:10:17,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:17,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:10:17,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:10:17,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 11:10:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:10:18,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:10:18,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:10:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888922, now seen corresponding path program 1 times [2023-08-30 11:10:18,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:10:18,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612781163] [2023-08-30 11:10:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:10:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:10:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:10:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:10:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:10:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612781163] [2023-08-30 11:10:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612781163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:10:18,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:10:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:10:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464700788] [2023-08-30 11:10:18,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:10:18,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:10:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:10:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:10:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:10:18,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 657 [2023-08-30 11:10:18,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 116 transitions, 744 flow. Second operand has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:18,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:10:18,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 657 [2023-08-30 11:10:18,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:10:36,400 INFO L130 PetriNetUnfolder]: 192216/262793 cut-off events. [2023-08-30 11:10:36,400 INFO L131 PetriNetUnfolder]: For 75370/75370 co-relation queries the response was YES. [2023-08-30 11:10:37,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606892 conditions, 262793 events. 192216/262793 cut-off events. For 75370/75370 co-relation queries the response was YES. Maximal size of possible extension queue 6575. Compared 1821864 event pairs, 127190 based on Foata normal form. 0/186936 useless extension candidates. Maximal degree in co-relation 606862. Up to 213459 conditions per place. [2023-08-30 11:10:38,618 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 154 selfloop transitions, 36 changer transitions 0/190 dead transitions. [2023-08-30 11:10:38,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 190 transitions, 1349 flow [2023-08-30 11:10:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:10:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:10:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1872 transitions. [2023-08-30 11:10:38,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2023-08-30 11:10:38,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1872 transitions. [2023-08-30 11:10:38,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1872 transitions. [2023-08-30 11:10:38,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:10:38,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1872 transitions. [2023-08-30 11:10:38,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-08-30 11:10:38,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:38,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:38,627 INFO L175 Difference]: Start difference. First operand has 91 places, 116 transitions, 744 flow. Second operand 6 states and 1872 transitions. [2023-08-30 11:10:38,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 190 transitions, 1349 flow [2023-08-30 11:10:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 190 transitions, 1325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:10:38,761 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 834 flow [2023-08-30 11:10:38,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=834, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2023-08-30 11:10:38,762 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2023-08-30 11:10:38,762 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 834 flow [2023-08-30 11:10:38,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:38,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:10:38,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:10:38,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 11:10:38,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:10:38,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:10:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888881, now seen corresponding path program 1 times [2023-08-30 11:10:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:10:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599728998] [2023-08-30 11:10:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:10:38,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:10:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:10:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:10:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:10:38,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599728998] [2023-08-30 11:10:38,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599728998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:10:38,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:10:38,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:10:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214752441] [2023-08-30 11:10:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:10:38,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:10:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:10:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:10:38,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:10:38,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 657 [2023-08-30 11:10:38,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 834 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:38,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:10:38,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 657 [2023-08-30 11:10:38,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:11:09,743 INFO L130 PetriNetUnfolder]: 286096/392161 cut-off events. [2023-08-30 11:11:09,744 INFO L131 PetriNetUnfolder]: For 123986/123986 co-relation queries the response was YES. [2023-08-30 11:11:11,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953750 conditions, 392161 events. 286096/392161 cut-off events. For 123986/123986 co-relation queries the response was YES. Maximal size of possible extension queue 10067. Compared 2880788 event pairs, 145910 based on Foata normal form. 0/313469 useless extension candidates. Maximal degree in co-relation 953719. Up to 262794 conditions per place. [2023-08-30 11:11:13,160 INFO L137 encePairwiseOnDemand]: 653/657 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-30 11:11:13,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 154 transitions, 1264 flow [2023-08-30 11:11:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:11:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:11:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-30 11:11:13,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-30 11:11:13,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-30 11:11:13,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-30 11:11:13,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:11:13,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-30 11:11:13,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:11:13,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:11:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:11:13,166 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 834 flow. Second operand 3 states and 1008 transitions. [2023-08-30 11:11:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 154 transitions, 1264 flow [2023-08-30 11:11:13,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:11:13,496 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 813 flow [2023-08-30 11:11:13,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=813, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2023-08-30 11:11:13,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2023-08-30 11:11:13,497 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 813 flow [2023-08-30 11:11:13,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:11:13,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:11:13,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:11:13,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:11:13,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:11:13,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:11:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1164396443, now seen corresponding path program 1 times [2023-08-30 11:11:13,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:11:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435232687] [2023-08-30 11:11:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:11:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:11:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:11:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:11:13,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:11:13,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435232687] [2023-08-30 11:11:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435232687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:11:13,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:11:13,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 11:11:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557007741] [2023-08-30 11:11:13,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:11:13,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:11:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:11:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:11:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:11:13,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 657 [2023-08-30 11:11:13,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 813 flow. Second operand has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:11:13,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:11:13,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 657 [2023-08-30 11:11:13,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:12:01,224 INFO L130 PetriNetUnfolder]: 422610/585329 cut-off events. [2023-08-30 11:12:01,225 INFO L131 PetriNetUnfolder]: For 274407/274407 co-relation queries the response was YES. [2023-08-30 11:12:05,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506877 conditions, 585329 events. 422610/585329 cut-off events. For 274407/274407 co-relation queries the response was YES. Maximal size of possible extension queue 14391. Compared 4589665 event pairs, 268872 based on Foata normal form. 4032/519505 useless extension candidates. Maximal degree in co-relation 1506845. Up to 392149 conditions per place. [2023-08-30 11:12:07,780 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 243 selfloop transitions, 19 changer transitions 0/262 dead transitions. [2023-08-30 11:12:07,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 262 transitions, 1852 flow [2023-08-30 11:12:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:12:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:12:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2232 transitions. [2023-08-30 11:12:07,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2023-08-30 11:12:07,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2232 transitions. [2023-08-30 11:12:07,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2232 transitions. [2023-08-30 11:12:07,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:12:07,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2232 transitions. [2023-08-30 11:12:07,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.85714285714283) internal successors, (2232), 7 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:12:07,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:12:07,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:12:07,794 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 813 flow. Second operand 7 states and 2232 transitions. [2023-08-30 11:12:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 262 transitions, 1852 flow [2023-08-30 11:12:25,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 262 transitions, 1842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:12:25,853 INFO L231 Difference]: Finished difference. Result has 106 places, 123 transitions, 915 flow [2023-08-30 11:12:25,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=106, PETRI_TRANSITIONS=123} [2023-08-30 11:12:25,854 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2023-08-30 11:12:25,854 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 123 transitions, 915 flow [2023-08-30 11:12:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:12:25,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:12:25,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:12:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 11:12:25,855 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:12:25,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:12:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1453888920, now seen corresponding path program 1 times [2023-08-30 11:12:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:12:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270619119] [2023-08-30 11:12:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:12:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:12:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:12:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:12:25,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:12:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270619119] [2023-08-30 11:12:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270619119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:12:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:12:25,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:12:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508027265] [2023-08-30 11:12:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:12:25,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:12:25,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:12:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:12:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:12:26,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 657 [2023-08-30 11:12:26,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 123 transitions, 915 flow. Second operand has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:12:26,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:12:26,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 657 [2023-08-30 11:12:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:17,101 INFO L130 PetriNetUnfolder]: 397470/549477 cut-off events. [2023-08-30 11:13:17,101 INFO L131 PetriNetUnfolder]: For 435108/435108 co-relation queries the response was YES. [2023-08-30 11:13:20,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466458 conditions, 549477 events. 397470/549477 cut-off events. For 435108/435108 co-relation queries the response was YES. Maximal size of possible extension queue 13422. Compared 4217234 event pairs, 292024 based on Foata normal form. 10712/501853 useless extension candidates. Maximal degree in co-relation 1466422. Up to 331509 conditions per place. [2023-08-30 11:13:22,668 INFO L137 encePairwiseOnDemand]: 651/657 looper letters, 195 selfloop transitions, 16 changer transitions 0/211 dead transitions. [2023-08-30 11:13:22,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 211 transitions, 1667 flow [2023-08-30 11:13:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:13:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:13:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2023-08-30 11:13:22,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879756468797565 [2023-08-30 11:13:22,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2023-08-30 11:13:22,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2023-08-30 11:13:22,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:22,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2023-08-30 11:13:22,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:22,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:22,678 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:22,678 INFO L175 Difference]: Start difference. First operand has 106 places, 123 transitions, 915 flow. Second operand 5 states and 1603 transitions. [2023-08-30 11:13:22,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 211 transitions, 1667 flow [2023-08-30 11:13:34,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 211 transitions, 1626 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:34,800 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 934 flow [2023-08-30 11:13:34,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=934, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2023-08-30 11:13:34,800 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-08-30 11:13:34,801 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 934 flow [2023-08-30 11:13:34,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:34,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:34,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:34,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 11:13:34,801 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:13:34,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash 98528532, now seen corresponding path program 1 times [2023-08-30 11:13:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966516575] [2023-08-30 11:13:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:34,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966516575] [2023-08-30 11:13:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966516575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237281593] [2023-08-30 11:13:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:34,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:34,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:34,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:34,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:13:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:35,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:13:35,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:13:35,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237281593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:13:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342154036] [2023-08-30 11:13:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:35,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:13:35,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 657 [2023-08-30 11:13:35,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:35,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:35,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 657 [2023-08-30 11:13:35,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:19,830 INFO L130 PetriNetUnfolder]: 335670/463341 cut-off events. [2023-08-30 11:14:19,830 INFO L131 PetriNetUnfolder]: For 479424/479424 co-relation queries the response was YES. [2023-08-30 11:14:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226446 conditions, 463341 events. 335670/463341 cut-off events. For 479424/479424 co-relation queries the response was YES. Maximal size of possible extension queue 11219. Compared 3475599 event pairs, 262476 based on Foata normal form. 23376/433633 useless extension candidates. Maximal degree in co-relation 1226408. Up to 463341 conditions per place. [2023-08-30 11:14:24,720 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-08-30 11:14:24,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1151 flow [2023-08-30 11:14:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2023-08-30 11:14:24,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926433282597666 [2023-08-30 11:14:24,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2023-08-30 11:14:24,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2023-08-30 11:14:24,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:24,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2023-08-30 11:14:24,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:24,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:24,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 657.0) internal successors, (2628), 4 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:24,725 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 934 flow. Second operand 3 states and 971 transitions. [2023-08-30 11:14:24,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1151 flow [2023-08-30 11:14:38,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:14:38,656 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 886 flow [2023-08-30 11:14:38,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=886, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2023-08-30 11:14:38,657 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2023-08-30 11:14:38,657 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 886 flow [2023-08-30 11:14:38,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:38,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:38,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:14:38,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:14:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:14:38,863 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:14:38,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2065241530, now seen corresponding path program 1 times [2023-08-30 11:14:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364889992] [2023-08-30 11:14:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:38,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:14:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:38,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364889992] [2023-08-30 11:14:38,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364889992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:14:38,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245898365] [2023-08-30 11:14:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:38,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:14:38,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:14:38,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:14:38,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:14:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:39,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:14:39,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:14:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:14:39,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:14:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245898365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:39,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:14:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 11:14:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521823647] [2023-08-30 11:14:39,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:14:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:14:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:14:39,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 657 [2023-08-30 11:14:39,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 886 flow. Second operand has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:39,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:39,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 657 [2023-08-30 11:14:39,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:15:16,061 INFO L130 PetriNetUnfolder]: 292550/404029 cut-off events. [2023-08-30 11:15:16,062 INFO L131 PetriNetUnfolder]: For 324300/324300 co-relation queries the response was YES. [2023-08-30 11:15:19,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038762 conditions, 404029 events. 292550/404029 cut-off events. For 324300/324300 co-relation queries the response was YES. Maximal size of possible extension queue 9894. Compared 2991105 event pairs, 226220 based on Foata normal form. 16192/372681 useless extension candidates. Maximal degree in co-relation 1038726. Up to 403982 conditions per place. [2023-08-30 11:15:21,182 INFO L137 encePairwiseOnDemand]: 654/657 looper letters, 96 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2023-08-30 11:15:21,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 119 transitions, 1111 flow [2023-08-30 11:15:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:15:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:15:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1268 transitions. [2023-08-30 11:15:21,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2023-08-30 11:15:21,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1268 transitions. [2023-08-30 11:15:21,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1268 transitions. [2023-08-30 11:15:21,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:15:21,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1268 transitions. [2023-08-30 11:15:21,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:15:21,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:15:21,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:15:21,190 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 886 flow. Second operand 4 states and 1268 transitions. [2023-08-30 11:15:21,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 119 transitions, 1111 flow [2023-08-30 11:15:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 119 transitions, 1035 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:15:30,516 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 843 flow [2023-08-30 11:15:30,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=843, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2023-08-30 11:15:30,516 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2023-08-30 11:15:30,516 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 843 flow [2023-08-30 11:15:30,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:15:30,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:15:30,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:15:30,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:15:30,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:15:30,717 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:15:30,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:15:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1254401823, now seen corresponding path program 1 times [2023-08-30 11:15:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:15:30,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448169339] [2023-08-30 11:15:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:15:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:15:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:15:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:15:30,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:15:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448169339] [2023-08-30 11:15:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448169339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:15:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864412519] [2023-08-30 11:15:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:15:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:15:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:15:30,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:15:30,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:15:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:15:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:15:30,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:15:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:15:31,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:15:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:15:31,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864412519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:15:31,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:15:31,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-30 11:15:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800280901] [2023-08-30 11:15:31,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:15:31,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 11:15:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:15:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 11:15:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-30 11:15:31,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 657 [2023-08-30 11:15:31,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 843 flow. Second operand has 16 states, 16 states have (on average 284.875) internal successors, (4558), 16 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:15:31,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:15:31,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 657 [2023-08-30 11:15:31,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:17:07,000 INFO L130 PetriNetUnfolder]: 715766/991460 cut-off events. [2023-08-30 11:17:07,001 INFO L131 PetriNetUnfolder]: For 612392/612392 co-relation queries the response was YES. Killed by 15