./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-trans.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-node-trans.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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --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 11:01:00,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:01:00,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:01:00,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:01:00,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:01:00,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:01:00,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:01:00,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:01:00,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:01:00,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:01:00,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:01:00,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:01:00,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:01:00,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:01:00,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:01:00,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:01:00,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:01:00,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:01:00,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:01:00,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:01:00,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:01:00,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:01:00,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:01:00,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:01:00,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:01:00,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:01:00,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:01:00,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:01:00,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:01:00,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:01:00,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:01:00,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:01:00,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:01:00,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:01:00,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:01:00,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:01:00,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:01:00,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:01:00,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:01:00,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:01:00,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:01:00,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:01:00,634 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:01:00,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:01:00,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:01:00,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:01:00,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:01:00,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:01:00,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:01:00,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:01:00,637 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:01:00,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:01:00,638 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:01:00,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:01:00,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:01:00,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:01:00,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:01:00,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:01:00,640 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:01:00,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:01:00,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:01:00,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:01:00,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:01:00,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:01:00,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:01:00,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:01:00,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:01:00,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:01:00,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:01:00,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:01:00,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:01:00,643 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:01:00,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:01:00,643 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:01:00,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:01:00,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:01:00,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:01:00,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:01:00,961 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:01:00,961 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:01:00,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 11:01:02,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:01:02,228 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:01:02,229 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-30 11:01:02,243 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81da24dea/0002a577aa3943b4a3a6f670e278a2b1/FLAGfa61fe5f3 [2023-08-30 11:01:02,258 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81da24dea/0002a577aa3943b4a3a6f670e278a2b1 [2023-08-30 11:01:02,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:01:02,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:01:02,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:01:02,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:01:02,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:01:02,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf999f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02, skipping insertion in model container [2023-08-30 11:01:02,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:01:02,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:01:02,506 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-node-trans.wvr.c[3945,3958] [2023-08-30 11:01:02,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:01:02,547 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:01:02,581 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-node-trans.wvr.c[3945,3958] [2023-08-30 11:01:02,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:01:02,605 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:01:02,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02 WrapperNode [2023-08-30 11:01:02,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:01:02,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:01:02,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:01:02,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:01:02,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,663 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 497 [2023-08-30 11:01:02,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:01:02,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:01:02,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:01:02,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:01:02,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:01:02,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:01:02,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:01:02,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:01:02,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (1/1) ... [2023-08-30 11:01:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:01:02,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:02,764 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 11:01:02,790 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 11:01:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:01:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:01:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:01:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:01:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:01:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:01:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:01:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:01:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:01:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:01:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:01:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:01:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:01:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:01:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:01:02,810 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 11:01:02,970 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:01:02,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:01:03,619 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:01:03,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:01:03,642 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:01:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:01:03 BoogieIcfgContainer [2023-08-30 11:01:03,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:01:03,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:01:03,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:01:03,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:01:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:01:02" (1/3) ... [2023-08-30 11:01:03,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1ff510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:01:03, skipping insertion in model container [2023-08-30 11:01:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:02" (2/3) ... [2023-08-30 11:01:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1ff510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:01:03, skipping insertion in model container [2023-08-30 11:01:03,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:01:03" (3/3) ... [2023-08-30 11:01:03,656 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-08-30 11:01:03,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:01:03,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:01:03,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 11:01:03,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:01:03,810 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:01:03,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 11:01:04,111 INFO L130 PetriNetUnfolder]: 47/611 cut-off events. [2023-08-30 11:01:04,111 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:01:04,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 611 events. 47/611 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 11:01:04,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 11:01:04,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 593 transitions, 1201 flow [2023-08-30 11:01:04,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:01:04,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 11:01:04,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 11:01:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 593 transitions, 1201 flow [2023-08-30 11:01:04,275 INFO L130 PetriNetUnfolder]: 46/593 cut-off events. [2023-08-30 11:01:04,283 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:01:04,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 593 events. 46/593 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1064 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 11:01:04,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 34440 [2023-08-30 11:01:30,141 INFO L134 LiptonReduction]: Checked pairs total: 44964 [2023-08-30 11:01:30,142 INFO L136 LiptonReduction]: Total number of compositions: 761 [2023-08-30 11:01:30,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:01:30,185 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;@4e7aba27, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:01:30,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-30 11:01:30,196 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 11:01:30,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:01:30,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:30,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:01:30,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:30,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2023-08-30 11:01:30,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:30,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754518559] [2023-08-30 11:01:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:30,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:30,346 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 11:01:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754518559] [2023-08-30 11:01:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754518559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:30,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:30,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:01:30,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870162645] [2023-08-30 11:01:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:01:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:01:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:01:30,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1375 [2023-08-30 11:01:30,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 177 flow. Second operand has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 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 11:01:30,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:30,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1375 [2023-08-30 11:01:30,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:31,518 INFO L130 PetriNetUnfolder]: 4309/6198 cut-off events. [2023-08-30 11:01:31,518 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2023-08-30 11:01:31,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12739 conditions, 6198 events. 4309/6198 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29847 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 11796. Up to 6199 conditions per place. [2023-08-30 11:01:31,549 INFO L137 encePairwiseOnDemand]: 1367/1375 looper letters, 73 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-30 11:01:31,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 307 flow [2023-08-30 11:01:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:01:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:01:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1237 transitions. [2023-08-30 11:01:31,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44981818181818184 [2023-08-30 11:01:31,566 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1237 transitions. [2023-08-30 11:01:31,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1237 transitions. [2023-08-30 11:01:31,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:31,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1237 transitions. [2023-08-30 11:01:31,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 618.5) internal successors, (1237), 2 states have internal predecessors, (1237), 0 states have call successors, (0), 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 11:01:31,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 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 11:01:31,587 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 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 11:01:31,589 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 177 flow. Second operand 2 states and 1237 transitions. [2023-08-30 11:01:31,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 307 flow [2023-08-30 11:01:31,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:01:31,605 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 152 flow [2023-08-30 11:01:31,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-30 11:01:31,610 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 11:01:31,610 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 152 flow [2023-08-30 11:01:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 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 11:01:31,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:31,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:01:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:01:31,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:31,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash 77732, now seen corresponding path program 1 times [2023-08-30 11:01:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:31,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706568000] [2023-08-30 11:01:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:31,775 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 11:01:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706568000] [2023-08-30 11:01:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706568000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:31,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:31,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970963280] [2023-08-30 11:01:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:31,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:31,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:31,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:01:31,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 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 11:01:31,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:31,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:01:31,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:32,761 INFO L130 PetriNetUnfolder]: 4309/6196 cut-off events. [2023-08-30 11:01:32,761 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 11:01:32,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 6196 events. 4309/6196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29844 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12646. Up to 6196 conditions per place. [2023-08-30 11:01:32,821 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:01:32,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 290 flow [2023-08-30 11:01:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1783 transitions. [2023-08-30 11:01:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43224242424242426 [2023-08-30 11:01:32,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1783 transitions. [2023-08-30 11:01:32,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1783 transitions. [2023-08-30 11:01:32,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:32,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1783 transitions. [2023-08-30 11:01:32,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 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 11:01:32,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:32,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:32,842 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 152 flow. Second operand 3 states and 1783 transitions. [2023-08-30 11:01:32,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 290 flow [2023-08-30 11:01:32,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:01:32,844 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 150 flow [2023-08-30 11:01:32,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-30 11:01:32,846 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 11:01:32,846 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 150 flow [2023-08-30 11:01:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 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 11:01:32,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:32,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:01:32,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:01:32,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:32,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 77731, now seen corresponding path program 1 times [2023-08-30 11:01:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669957413] [2023-08-30 11:01:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:32,919 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 11:01:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669957413] [2023-08-30 11:01:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669957413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:32,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046078667] [2023-08-30 11:01:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:32,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:32,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:32,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:01:32,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:32,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:32,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:01:32,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:33,905 INFO L130 PetriNetUnfolder]: 4309/6194 cut-off events. [2023-08-30 11:01:33,906 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 11:01:33,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 6194 events. 4309/6194 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29840 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12643. Up to 6194 conditions per place. [2023-08-30 11:01:33,937 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 11:01:33,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 284 flow [2023-08-30 11:01:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1787 transitions. [2023-08-30 11:01:33,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332121212121212 [2023-08-30 11:01:33,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1787 transitions. [2023-08-30 11:01:33,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1787 transitions. [2023-08-30 11:01:33,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:33,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1787 transitions. [2023-08-30 11:01:33,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 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 11:01:33,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:33,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:33,957 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 150 flow. Second operand 3 states and 1787 transitions. [2023-08-30 11:01:33,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 284 flow [2023-08-30 11:01:33,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:33,959 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 147 flow [2023-08-30 11:01:33,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-30 11:01:33,960 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 11:01:33,960 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 147 flow [2023-08-30 11:01:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:33,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:33,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:01:33,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:01:33,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:33,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 77639, now seen corresponding path program 1 times [2023-08-30 11:01:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661959004] [2023-08-30 11:01:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:34,030 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 11:01:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661959004] [2023-08-30 11:01:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661959004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:34,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682069411] [2023-08-30 11:01:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:34,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:34,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 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 11:01:34,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:34,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:34,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:35,667 INFO L130 PetriNetUnfolder]: 8617/12381 cut-off events. [2023-08-30 11:01:35,667 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:01:35,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25276 conditions, 12381 events. 8617/12381 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66718 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25272. Up to 6195 conditions per place. [2023-08-30 11:01:35,716 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 125 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-08-30 11:01:35,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 539 flow [2023-08-30 11:01:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1844 transitions. [2023-08-30 11:01:35,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44703030303030306 [2023-08-30 11:01:35,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1844 transitions. [2023-08-30 11:01:35,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1844 transitions. [2023-08-30 11:01:35,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:35,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1844 transitions. [2023-08-30 11:01:35,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.6666666666666) internal successors, (1844), 3 states have internal predecessors, (1844), 0 states have call successors, (0), 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 11:01:35,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:35,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:35,736 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 147 flow. Second operand 3 states and 1844 transitions. [2023-08-30 11:01:35,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 539 flow [2023-08-30 11:01:35,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 131 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:35,739 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 202 flow [2023-08-30 11:01:35,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-08-30 11:01:35,740 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-08-30 11:01:35,740 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 202 flow [2023-08-30 11:01:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 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 11:01:35,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:35,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:01:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:01:35,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:35,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2412280, now seen corresponding path program 1 times [2023-08-30 11:01:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28434971] [2023-08-30 11:01:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:35,828 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 11:01:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28434971] [2023-08-30 11:01:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28434971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:35,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:35,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:01:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518450172] [2023-08-30 11:01:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:35,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:35,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 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 11:01:35,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:35,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:37,258 INFO L130 PetriNetUnfolder]: 8617/12378 cut-off events. [2023-08-30 11:01:37,258 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:01:37,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25291 conditions, 12378 events. 8617/12378 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66615 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25286. Up to 12378 conditions per place. [2023-08-30 11:01:37,321 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:01:37,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 332 flow [2023-08-30 11:01:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 11:01:37,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 11:01:37,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 11:01:37,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 11:01:37,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:37,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 11:01:37,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 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 11:01:37,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:37,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:37,338 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 202 flow. Second operand 3 states and 1776 transitions. [2023-08-30 11:01:37,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 332 flow [2023-08-30 11:01:37,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:01:37,341 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 180 flow [2023-08-30 11:01:37,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-08-30 11:01:37,342 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 11:01:37,342 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 180 flow [2023-08-30 11:01:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 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 11:01:37,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:37,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:01:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:01:37,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:37,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2414611, now seen corresponding path program 1 times [2023-08-30 11:01:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678301469] [2023-08-30 11:01:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:37,412 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 11:01:37,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678301469] [2023-08-30 11:01:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678301469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96381202] [2023-08-30 11:01:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:37,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:37,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:01:37,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:37,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:37,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:01:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:38,582 INFO L130 PetriNetUnfolder]: 8617/12374 cut-off events. [2023-08-30 11:01:38,583 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:01:38,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25278 conditions, 12374 events. 8617/12374 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66587 event pairs, 7650 based on Foata normal form. 0/6683 useless extension candidates. Maximal degree in co-relation 25273. Up to 12374 conditions per place. [2023-08-30 11:01:38,624 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 11:01:38,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 314 flow [2023-08-30 11:01:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1782 transitions. [2023-08-30 11:01:38,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-08-30 11:01:38,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1782 transitions. [2023-08-30 11:01:38,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1782 transitions. [2023-08-30 11:01:38,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:38,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1782 transitions. [2023-08-30 11:01:38,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.0) internal successors, (1782), 3 states have internal predecessors, (1782), 0 states have call successors, (0), 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 11:01:38,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:38,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:38,640 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 180 flow. Second operand 3 states and 1782 transitions. [2023-08-30 11:01:38,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 314 flow [2023-08-30 11:01:38,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:38,642 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 177 flow [2023-08-30 11:01:38,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-30 11:01:38,643 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-08-30 11:01:38,643 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 177 flow [2023-08-30 11:01:38,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:38,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:38,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:01:38,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:01:38,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:38,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2414678, now seen corresponding path program 1 times [2023-08-30 11:01:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:38,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577344956] [2023-08-30 11:01:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:38,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:38,686 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 11:01:38,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:38,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577344956] [2023-08-30 11:01:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577344956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:38,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:38,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099812683] [2023-08-30 11:01:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:38,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:38,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:38,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:38,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:38,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:01:38,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 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 11:01:38,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:38,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:01:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:40,175 INFO L130 PetriNetUnfolder]: 8617/12370 cut-off events. [2023-08-30 11:01:40,175 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:01:40,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25271 conditions, 12370 events. 8617/12370 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66550 event pairs, 7650 based on Foata normal form. 2/6683 useless extension candidates. Maximal degree in co-relation 25266. Up to 12370 conditions per place. [2023-08-30 11:01:40,225 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 66 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 11:01:40,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 307 flow [2023-08-30 11:01:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1774 transitions. [2023-08-30 11:01:40,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300606060606061 [2023-08-30 11:01:40,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1774 transitions. [2023-08-30 11:01:40,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1774 transitions. [2023-08-30 11:01:40,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:40,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1774 transitions. [2023-08-30 11:01:40,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 591.3333333333334) internal successors, (1774), 3 states have internal predecessors, (1774), 0 states have call successors, (0), 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 11:01:40,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:40,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:40,242 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 177 flow. Second operand 3 states and 1774 transitions. [2023-08-30 11:01:40,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 307 flow [2023-08-30 11:01:40,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:40,245 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 174 flow [2023-08-30 11:01:40,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 11:01:40,245 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-30 11:01:40,246 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 174 flow [2023-08-30 11:01:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 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 11:01:40,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:40,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:01:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:01:40,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:40,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2412279, now seen corresponding path program 1 times [2023-08-30 11:01:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001957907] [2023-08-30 11:01:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:40,297 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 11:01:40,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001957907] [2023-08-30 11:01:40,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001957907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209813118] [2023-08-30 11:01:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:40,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:40,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:40,305 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 11:01:40,317 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 11:01:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:40,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:01:40,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:40,502 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 11:01:40,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:01:40,533 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 11:01:40,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209813118] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:01:40,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:01:40,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:01:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921293968] [2023-08-30 11:01:40,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:01:40,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:01:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:01:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:01:40,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:40,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 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 11:01:40,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:40,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:43,842 INFO L130 PetriNetUnfolder]: 21541/30919 cut-off events. [2023-08-30 11:01:43,842 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 11:01:43,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 30919 events. 21541/30919 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 186755 event pairs, 19125 based on Foata normal form. 0/16701 useless extension candidates. Maximal degree in co-relation 63142. Up to 6189 conditions per place. [2023-08-30 11:01:44,010 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 273 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2023-08-30 11:01:44,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 294 transitions, 1270 flow [2023-08-30 11:01:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:01:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:01:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3717 transitions. [2023-08-30 11:01:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505454545454545 [2023-08-30 11:01:44,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3717 transitions. [2023-08-30 11:01:44,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3717 transitions. [2023-08-30 11:01:44,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:44,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3717 transitions. [2023-08-30 11:01:44,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 619.5) internal successors, (3717), 6 states have internal predecessors, (3717), 0 states have call successors, (0), 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 11:01:44,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 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 11:01:44,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 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 11:01:44,188 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 174 flow. Second operand 6 states and 3717 transitions. [2023-08-30 11:01:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 294 transitions, 1270 flow [2023-08-30 11:01:44,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 294 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:44,193 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 323 flow [2023-08-30 11:01:44,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-08-30 11:01:44,196 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:01:44,196 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 323 flow [2023-08-30 11:01:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 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 11:01:44,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:44,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:01:44,205 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 11:01:44,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:44,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:44,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash 74862323, now seen corresponding path program 1 times [2023-08-30 11:01:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:44,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82256855] [2023-08-30 11:01:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:44,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:44,459 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 11:01:44,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82256855] [2023-08-30 11:01:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82256855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131031408] [2023-08-30 11:01:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:44,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:44,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:44,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:01:44,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:44,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:44,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:01:44,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:47,557 INFO L130 PetriNetUnfolder]: 21541/30914 cut-off events. [2023-08-30 11:01:47,558 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2023-08-30 11:01:47,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 30914 events. 21541/30914 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188536 event pairs, 19125 based on Foata normal form. 0/16710 useless extension candidates. Maximal degree in co-relation 63180. Up to 30914 conditions per place. [2023-08-30 11:01:47,711 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 11:01:47,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 483 flow [2023-08-30 11:01:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1778 transitions. [2023-08-30 11:01:47,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103030303030304 [2023-08-30 11:01:47,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1778 transitions. [2023-08-30 11:01:47,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1778 transitions. [2023-08-30 11:01:47,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:47,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1778 transitions. [2023-08-30 11:01:47,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.6666666666666) internal successors, (1778), 3 states have internal predecessors, (1778), 0 states have call successors, (0), 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 11:01:47,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:47,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:47,726 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 323 flow. Second operand 3 states and 1778 transitions. [2023-08-30 11:01:47,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 483 flow [2023-08-30 11:01:47,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 453 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:47,729 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 293 flow [2023-08-30 11:01:47,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-08-30 11:01:47,730 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:01:47,730 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 293 flow [2023-08-30 11:01:47,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:47,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:47,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:01:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:01:47,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:47,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash 74862322, now seen corresponding path program 1 times [2023-08-30 11:01:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:47,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120755796] [2023-08-30 11:01:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:47,789 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 11:01:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120755796] [2023-08-30 11:01:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120755796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:47,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:01:47,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974685531] [2023-08-30 11:01:47,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:47,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:47,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:01:47,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 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 11:01:47,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:47,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:01:47,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:50,899 INFO L130 PetriNetUnfolder]: 21541/30909 cut-off events. [2023-08-30 11:01:50,899 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2023-08-30 11:01:51,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 30909 events. 21541/30909 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188538 event pairs, 19125 based on Foata normal form. 0/16712 useless extension candidates. Maximal degree in co-relation 63153. Up to 30909 conditions per place. [2023-08-30 11:01:51,120 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-30 11:01:51,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 451 flow [2023-08-30 11:01:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1771 transitions. [2023-08-30 11:01:51,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42933333333333334 [2023-08-30 11:01:51,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1771 transitions. [2023-08-30 11:01:51,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1771 transitions. [2023-08-30 11:01:51,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:51,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1771 transitions. [2023-08-30 11:01:51,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 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 11:01:51,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:51,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:51,134 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 293 flow. Second operand 3 states and 1771 transitions. [2023-08-30 11:01:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 451 flow [2023-08-30 11:01:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:51,137 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 292 flow [2023-08-30 11:01:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-08-30 11:01:51,138 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:01:51,138 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 292 flow [2023-08-30 11:01:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 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 11:01:51,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:51,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:01:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:01:51,139 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:51,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1974230638, now seen corresponding path program 1 times [2023-08-30 11:01:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594356570] [2023-08-30 11:01:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:51,184 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 11:01:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594356570] [2023-08-30 11:01:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594356570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:01:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:01:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422192767] [2023-08-30 11:01:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:51,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:01:51,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:51,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 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 11:01:51,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:51,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:51,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:56,976 INFO L130 PetriNetUnfolder]: 43066/61754 cut-off events. [2023-08-30 11:01:56,976 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 11:01:57,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126123 conditions, 61754 events. 43066/61754 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412742 event pairs, 38250 based on Foata normal form. 0/33392 useless extension candidates. Maximal degree in co-relation 126114. Up to 30910 conditions per place. [2023-08-30 11:01:57,347 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-08-30 11:01:57,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 634 flow [2023-08-30 11:01:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1817 transitions. [2023-08-30 11:01:57,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404848484848485 [2023-08-30 11:01:57,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1817 transitions. [2023-08-30 11:01:57,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1817 transitions. [2023-08-30 11:01:57,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:57,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1817 transitions. [2023-08-30 11:01:57,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.6666666666666) internal successors, (1817), 3 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:57,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:57,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:01:57,361 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 292 flow. Second operand 3 states and 1817 transitions. [2023-08-30 11:01:57,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 634 flow [2023-08-30 11:01:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:57,364 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2023-08-30 11:01:57,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-30 11:01:57,364 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 11:01:57,364 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2023-08-30 11:01:57,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 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 11:01:57,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:57,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:01:57,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:01:57,366 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:57,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601384, now seen corresponding path program 1 times [2023-08-30 11:01:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989465341] [2023-08-30 11:01:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:57,432 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 11:01:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989465341] [2023-08-30 11:01:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989465341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:57,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592260736] [2023-08-30 11:01:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:57,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:57,434 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 11:01:57,437 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 11:01:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:57,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:01:57,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:57,606 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 11:01:57,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:01:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592260736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:01:57,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:01:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091274600] [2023-08-30 11:01:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:01:57,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 1375 [2023-08-30 11:01:57,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:57,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:57,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 1375 [2023-08-30 11:01:57,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:04,898 INFO L130 PetriNetUnfolder]: 43065/61753 cut-off events. [2023-08-30 11:02:04,898 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-30 11:02:05,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126236 conditions, 61753 events. 43065/61753 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412740 event pairs, 38250 based on Foata normal form. 1/33422 useless extension candidates. Maximal degree in co-relation 126226. Up to 61753 conditions per place. [2023-08-30 11:02:05,247 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 11:02:05,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 511 flow [2023-08-30 11:02:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:02:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:02:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1760 transitions. [2023-08-30 11:02:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2023-08-30 11:02:05,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1760 transitions. [2023-08-30 11:02:05,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1760 transitions. [2023-08-30 11:02:05,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:05,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1760 transitions. [2023-08-30 11:02:05,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 3 states have internal predecessors, (1760), 0 states have call successors, (0), 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 11:02:05,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:02:05,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:02:05,256 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1760 transitions. [2023-08-30 11:02:05,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 511 flow [2023-08-30 11:02:05,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:02:05,259 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 335 flow [2023-08-30 11:02:05,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-08-30 11:02:05,260 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 11:02:05,260 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 335 flow [2023-08-30 11:02:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:05,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:05,261 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:02:05,270 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 11:02:05,468 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,SelfDestructingSolverStorable11 [2023-08-30 11:02:05,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:05,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1144777850, now seen corresponding path program 2 times [2023-08-30 11:02:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087165406] [2023-08-30 11:02:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:05,572 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 11:02:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087165406] [2023-08-30 11:02:05,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087165406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198723646] [2023-08-30 11:02:05,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:02:05,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:05,575 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 11:02:05,606 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 11:02:05,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:02:05,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:02:05,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:02:05,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:05,718 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 11:02:05,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:02:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198723646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:02:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:02:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067136767] [2023-08-30 11:02:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:02:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:02:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:02:05,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:02:05,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:05,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:05,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:02:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:12,372 INFO L130 PetriNetUnfolder]: 43065/61750 cut-off events. [2023-08-30 11:02:12,372 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 11:02:12,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126190 conditions, 61750 events. 43065/61750 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412746 event pairs, 38250 based on Foata normal form. 3/33401 useless extension candidates. Maximal degree in co-relation 126180. Up to 61750 conditions per place. [2023-08-30 11:02:12,724 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 11:02:12,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 467 flow [2023-08-30 11:02:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:02:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:02:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 11:02:12,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 11:02:12,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 11:02:12,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 11:02:12,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:12,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 11:02:12,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 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 11:02:12,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:02:12,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:02:12,736 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 335 flow. Second operand 3 states and 1776 transitions. [2023-08-30 11:02:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 467 flow [2023-08-30 11:02:12,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 421 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 11:02:12,739 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 261 flow [2023-08-30 11:02:12,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-08-30 11:02:12,739 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-08-30 11:02:12,740 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 261 flow [2023-08-30 11:02:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:12,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:12,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:12,752 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 11:02:12,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:12,946 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:12,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:12,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1055193015, now seen corresponding path program 1 times [2023-08-30 11:02:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755666134] [2023-08-30 11:02:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:02:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755666134] [2023-08-30 11:02:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755666134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369856164] [2023-08-30 11:02:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:13,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:13,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:13,016 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 11:02:13,027 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 11:02:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:13,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:02:13,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:02:13,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:02:13,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369856164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:13,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:02:13,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 11:02:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202108850] [2023-08-30 11:02:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:02:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:02:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:02:13,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:02:13,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 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 11:02:13,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:13,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:02:13,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:20,001 INFO L130 PetriNetUnfolder]: 43064/61749 cut-off events. [2023-08-30 11:02:20,002 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 11:02:20,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126161 conditions, 61749 events. 43064/61749 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412772 event pairs, 38250 based on Foata normal form. 0/33391 useless extension candidates. Maximal degree in co-relation 126155. Up to 61744 conditions per place. [2023-08-30 11:02:20,330 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 11:02:20,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 417 flow [2023-08-30 11:02:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:02:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:02:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 11:02:20,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 11:02:20,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 11:02:20,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 11:02:20,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:20,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 11:02:20,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 11:02:20,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:20,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:20,341 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 261 flow. Second operand 4 states and 2300 transitions. [2023-08-30 11:02:20,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 417 flow [2023-08-30 11:02:20,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:02:20,343 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 270 flow [2023-08-30 11:02:20,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-30 11:02:20,343 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 11:02:20,343 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 270 flow [2023-08-30 11:02:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 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 11:02:20,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:20,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:20,348 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 11:02:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:20,544 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:20,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1536929800, now seen corresponding path program 1 times [2023-08-30 11:02:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:20,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532780656] [2023-08-30 11:02:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:20,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:02:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532780656] [2023-08-30 11:02:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532780656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930374854] [2023-08-30 11:02:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:20,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:02:20,623 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 11:02:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:20,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:02:20,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:20,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:02:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930374854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:02:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 11:02:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394775917] [2023-08-30 11:02:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:20,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:02:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:02:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:02:20,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:02:20,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 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 11:02:20,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:20,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:02:20,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:26,083 INFO L130 PetriNetUnfolder]: 34453/49404 cut-off events. [2023-08-30 11:02:26,083 INFO L131 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2023-08-30 11:02:26,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100953 conditions, 49404 events. 34453/49404 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 322680 event pairs, 30600 based on Foata normal form. 1/26721 useless extension candidates. Maximal degree in co-relation 100947. Up to 49399 conditions per place. [2023-08-30 11:02:26,360 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 11:02:26,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 430 flow [2023-08-30 11:02:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:02:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:02:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 11:02:26,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 11:02:26,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 11:02:26,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 11:02:26,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:26,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 11:02:26,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 11:02:26,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:26,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:26,373 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 270 flow. Second operand 4 states and 2300 transitions. [2023-08-30 11:02:26,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 430 flow [2023-08-30 11:02:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:02:26,375 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 292 flow [2023-08-30 11:02:26,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 11:02:26,376 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-08-30 11:02:26,376 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 292 flow [2023-08-30 11:02:26,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 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 11:02:26,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:26,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:26,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:02:26,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 11:02:26,577 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:26,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 396618935, now seen corresponding path program 1 times [2023-08-30 11:02:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42742878] [2023-08-30 11:02:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:26,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42742878] [2023-08-30 11:02:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42742878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677345595] [2023-08-30 11:02:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:26,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:26,665 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 11:02:26,687 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 11:02:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:02:26,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:26,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:02:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677345595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:02:26,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:02:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:02:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033394534] [2023-08-30 11:02:26,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:02:26,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:02:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:02:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:02:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:02:26,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 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 11:02:26,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:26,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:02:26,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:40,704 INFO L130 PetriNetUnfolder]: 86149/123468 cut-off events. [2023-08-30 11:02:40,705 INFO L131 PetriNetUnfolder]: For 967/967 co-relation queries the response was YES. [2023-08-30 11:02:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252239 conditions, 123468 events. 86149/123468 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 892226 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 252232. Up to 24717 conditions per place. [2023-08-30 11:02:41,429 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 227 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2023-08-30 11:02:41,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 260 transitions, 1244 flow [2023-08-30 11:02:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:02:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:02:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4234 transitions. [2023-08-30 11:02:41,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398961038961039 [2023-08-30 11:02:41,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4234 transitions. [2023-08-30 11:02:41,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4234 transitions. [2023-08-30 11:02:41,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:41,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4234 transitions. [2023-08-30 11:02:41,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 604.8571428571429) internal successors, (4234), 7 states have internal predecessors, (4234), 0 states have call successors, (0), 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 11:02:41,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 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 11:02:41,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 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 11:02:41,448 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 292 flow. Second operand 7 states and 4234 transitions. [2023-08-30 11:02:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 260 transitions, 1244 flow [2023-08-30 11:02:41,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 260 transitions, 1225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:02:41,452 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 492 flow [2023-08-30 11:02:41,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 11:02:41,452 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-30 11:02:41,453 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 492 flow [2023-08-30 11:02:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 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 11:02:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:41,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:41,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:02:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 11:02:41,661 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:41,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 396618880, now seen corresponding path program 1 times [2023-08-30 11:02:41,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477946143] [2023-08-30 11:02:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:41,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:41,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477946143] [2023-08-30 11:02:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477946143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:41,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792433666] [2023-08-30 11:02:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:41,722 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 11:02:41,735 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 11:02:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:41,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:02:41,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:41,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:02:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792433666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:41,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:02:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:02:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241086703] [2023-08-30 11:02:41,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:02:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:02:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:02:41,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:02:41,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 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 11:02:41,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:41,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:02:41,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:55,457 INFO L130 PetriNetUnfolder]: 86113/123420 cut-off events. [2023-08-30 11:02:55,458 INFO L131 PetriNetUnfolder]: For 990/990 co-relation queries the response was YES. [2023-08-30 11:02:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252279 conditions, 123420 events. 86113/123420 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 4234. Compared 894158 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 252269. Up to 98696 conditions per place. [2023-08-30 11:02:56,173 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-08-30 11:02:56,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 757 flow [2023-08-30 11:02:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:02:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:02:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2377 transitions. [2023-08-30 11:02:56,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43218181818181817 [2023-08-30 11:02:56,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2377 transitions. [2023-08-30 11:02:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2377 transitions. [2023-08-30 11:02:56,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:56,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2377 transitions. [2023-08-30 11:02:56,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 594.25) internal successors, (2377), 4 states have internal predecessors, (2377), 0 states have call successors, (0), 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 11:02:56,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:56,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:02:56,186 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 492 flow. Second operand 4 states and 2377 transitions. [2023-08-30 11:02:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 757 flow [2023-08-30 11:02:56,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 727 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:02:56,190 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 405 flow [2023-08-30 11:02:56,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2023-08-30 11:02:56,191 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -2 predicate places. [2023-08-30 11:02:56,191 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 405 flow [2023-08-30 11:02:56,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 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 11:02:56,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:56,192 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:56,201 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 11:02:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:56,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:56,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:56,398 INFO L85 PathProgramCache]: Analyzing trace with hash 224174474, now seen corresponding path program 2 times [2023-08-30 11:02:56,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:56,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574671207] [2023-08-30 11:02:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 11:02:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574671207] [2023-08-30 11:02:56,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574671207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:02:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758630484] [2023-08-30 11:02:56,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:02:56,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:02:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:02:56,577 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 11:02:56,581 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 11:02:56,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:02:56,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:02:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:02:56,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:02:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 11:02:56,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:02:56,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758630484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:56,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:02:56,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 11:02:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502447523] [2023-08-30 11:02:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:02:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:02:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:02:56,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:02:56,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:56,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:56,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:02:56,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:03:10,223 INFO L130 PetriNetUnfolder]: 86113/123408 cut-off events. [2023-08-30 11:03:10,223 INFO L131 PetriNetUnfolder]: For 1049/1049 co-relation queries the response was YES. [2023-08-30 11:03:10,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252184 conditions, 123408 events. 86113/123408 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894119 event pairs, 76500 based on Foata normal form. 12/66820 useless extension candidates. Maximal degree in co-relation 252173. Up to 123384 conditions per place. [2023-08-30 11:03:10,980 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-30 11:03:10,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 553 flow [2023-08-30 11:03:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:03:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:03:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1770 transitions. [2023-08-30 11:03:10,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290909090909091 [2023-08-30 11:03:10,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1770 transitions. [2023-08-30 11:03:10,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1770 transitions. [2023-08-30 11:03:10,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:03:10,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1770 transitions. [2023-08-30 11:03:10,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 0 states have call successors, (0), 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 11:03:10,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:03:10,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 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 11:03:10,987 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 405 flow. Second operand 3 states and 1770 transitions. [2023-08-30 11:03:10,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 553 flow [2023-08-30 11:03:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 498 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 11:03:10,990 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 322 flow [2023-08-30 11:03:10,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2023-08-30 11:03:10,990 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 11:03:10,990 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 322 flow [2023-08-30 11:03:10,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:03:10,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:03:10,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:03:10,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 11:03:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 11:03:11,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:03:11,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:03:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash 719084549, now seen corresponding path program 1 times [2023-08-30 11:03:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:03:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155102866] [2023-08-30 11:03:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:03:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:03:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:03:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:03:11,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:03:11,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155102866] [2023-08-30 11:03:11,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155102866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:03:11,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:03:11,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:03:11,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281554152] [2023-08-30 11:03:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:03:11,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:03:11,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:03:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:03:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:03:11,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:03:11,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 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 11:03:11,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:03:11,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:03:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:03:24,613 INFO L130 PetriNetUnfolder]: 86109/123404 cut-off events. [2023-08-30 11:03:24,613 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-08-30 11:03:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252052 conditions, 123404 events. 86109/123404 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894005 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252045. Up to 123400 conditions per place. [2023-08-30 11:03:25,353 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 85 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 11:03:25,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 494 flow [2023-08-30 11:03:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:03:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:03:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-08-30 11:03:25,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-08-30 11:03:25,359 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-08-30 11:03:25,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-08-30 11:03:25,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:03:25,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-08-30 11:03:25,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 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 11:03:25,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:03:25,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 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 11:03:25,366 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 322 flow. Second operand 4 states and 2293 transitions. [2023-08-30 11:03:25,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 494 flow [2023-08-30 11:03:25,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:03:25,369 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 323 flow [2023-08-30 11:03:25,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-30 11:03:25,370 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-08-30 11:03:25,370 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 323 flow [2023-08-30 11:03:25,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 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 11:03:25,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:03:25,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:03:25,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 11:03:25,371 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:03:25,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:03:25,371 INFO L85 PathProgramCache]: Analyzing trace with hash -718561934, now seen corresponding path program 1 times [2023-08-30 11:03:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:03:25,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895045203] [2023-08-30 11:03:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:03:25,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:03:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:03:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:03:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:03:25,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895045203] [2023-08-30 11:03:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895045203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:03:25,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:03:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:03:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251961522] [2023-08-30 11:03:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:03:25,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:03:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:03:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:03:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:03:25,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:03:25,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 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 11:03:25,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:03:25,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:03:25,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand