./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/popl20-bad-dot-product-alt.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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:00:47,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:00:47,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:00:47,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:00:47,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:00:47,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:00:47,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:00:47,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:00:47,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:00:47,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:00:47,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:00:47,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:00:47,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:00:47,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:00:47,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:00:47,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:00:47,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:00:47,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:00:47,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:00:47,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:00:47,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:00:47,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:00:47,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:00:47,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:00:47,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:00:47,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:00:47,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:00:47,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:00:47,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:00:47,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:00:47,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:00:47,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:00:47,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:00:47,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:00:47,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:00:47,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:00:47,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:00:47,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:00:47,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:00:47,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:00:47,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:00:47,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:00:47,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:00:47,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:00:47,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:00:47,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:00:47,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:00:47,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:00:47,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:00:47,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:00:47,700 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:00:47,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:00:47,701 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:00:47,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:00:47,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:00:47,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:00:47,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:00:47,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:00:47,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:00:47,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:00:47,702 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:00:47,703 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:00:47,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:00:47,706 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:00:47,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:00:47,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:00:47,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:00:47,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:00:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:00:47,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:00:47,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:00:47,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:00:47,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:00:47,709 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:00:47,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:00:47,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:00:48,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:00:48,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:00:48,014 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:00:48,014 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:00:48,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 08:00:48,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:00:49,180 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:00:49,181 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-09-01 08:00:49,187 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a2ff28fa/bcbb1176756841b2841e860c5151aeaa/FLAG0c7eb543d [2023-09-01 08:00:49,196 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a2ff28fa/bcbb1176756841b2841e860c5151aeaa [2023-09-01 08:00:49,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:00:49,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:00:49,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:00:49,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:00:49,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:00:49,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637550fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49, skipping insertion in model container [2023-09-01 08:00:49,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:00:49,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:00:49,414 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 08:00:49,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:00:49,427 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:00:49,464 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-09-01 08:00:49,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:00:49,486 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:00:49,487 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:00:49,493 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:00:49,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49 WrapperNode [2023-09-01 08:00:49,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:00:49,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:00:49,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:00:49,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:00:49,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,559 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 425 [2023-09-01 08:00:49,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:00:49,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:00:49,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:00:49,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:00:49,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:00:49,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:00:49,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:00:49,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:00:49,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (1/1) ... [2023-09-01 08:00:49,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:00:49,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:00:49,698 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) [2023-09-01 08:00:49,723 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 [2023-09-01 08:00:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:00:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 08:00:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:00:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:00:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:00:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 08:00:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:00:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:00:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:00:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:00:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:00:49,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:00:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:00:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:00:49,751 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:00:49,852 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:00:49,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:00:50,520 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:00:50,960 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:00:50,960 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 08:00:50,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:00:50 BoogieIcfgContainer [2023-09-01 08:00:50,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:00:50,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:00:50,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:00:50,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:00:50,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:00:49" (1/3) ... [2023-09-01 08:00:50,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c56f226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:00:50, skipping insertion in model container [2023-09-01 08:00:50,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:00:49" (2/3) ... [2023-09-01 08:00:50,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c56f226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:00:50, skipping insertion in model container [2023-09-01 08:00:50,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:00:50" (3/3) ... [2023-09-01 08:00:50,972 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-09-01 08:00:50,979 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:00:50,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:00:50,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:00:50,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:00:51,232 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:00:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 374 transitions, 772 flow [2023-09-01 08:00:51,455 INFO L130 PetriNetUnfolder]: 35/371 cut-off events. [2023-09-01 08:00:51,456 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:00:51,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 371 events. 35/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 862 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 298. Up to 2 conditions per place. [2023-09-01 08:00:51,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 374 transitions, 772 flow [2023-09-01 08:00:51,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 353 transitions, 721 flow [2023-09-01 08:00:51,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:00:51,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 353 transitions, 721 flow [2023-09-01 08:00:51,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 353 transitions, 721 flow [2023-09-01 08:00:51,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 353 transitions, 721 flow [2023-09-01 08:00:51,575 INFO L130 PetriNetUnfolder]: 34/353 cut-off events. [2023-09-01 08:00:51,575 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:00:51,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 353 events. 34/353 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 827 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 298. Up to 2 conditions per place. [2023-09-01 08:00:51,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 17934 [2023-09-01 08:01:16,138 INFO L134 LiptonReduction]: Checked pairs total: 24408 [2023-09-01 08:01:16,138 INFO L136 LiptonReduction]: Total number of compositions: 422 [2023-09-01 08:01:16,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:01:16,162 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;@200b45aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:01:16,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-09-01 08:01:16,164 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:01:16,165 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:01:16,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:16,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:01:16,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:01:16,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash 60193, now seen corresponding path program 1 times [2023-09-01 08:01:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:16,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770595020] [2023-09-01 08:01:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:16,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770595020] [2023-09-01 08:01:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770595020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:01:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:01:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:01:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070040839] [2023-09-01 08:01:16,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:01:16,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:01:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:01:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:01:16,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-09-01 08:01:16,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:16,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:16,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-09-01 08:01:16,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:21,561 INFO L130 PetriNetUnfolder]: 25006/32342 cut-off events. [2023-09-01 08:01:21,562 INFO L131 PetriNetUnfolder]: For 889/889 co-relation queries the response was YES. [2023-09-01 08:01:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65630 conditions, 32342 events. 25006/32342 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 2182. Compared 184879 event pairs, 15630 based on Foata normal form. 0/12117 useless extension candidates. Maximal degree in co-relation 30766. Up to 16172 conditions per place. [2023-09-01 08:01:21,779 INFO L137 encePairwiseOnDemand]: 778/796 looper letters, 109 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-09-01 08:01:21,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 496 flow [2023-09-01 08:01:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:01:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:01:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1087 transitions. [2023-09-01 08:01:21,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551926298157454 [2023-09-01 08:01:21,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1087 transitions. [2023-09-01 08:01:21,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1087 transitions. [2023-09-01 08:01:21,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:01:21,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1087 transitions. [2023-09-01 08:01:21,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:21,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:21,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:21,814 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1087 transitions. [2023-09-01 08:01:21,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 496 flow [2023-09-01 08:01:21,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 478 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:01:21,847 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 190 flow [2023-09-01 08:01:21,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-09-01 08:01:21,854 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-09-01 08:01:21,854 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 190 flow [2023-09-01 08:01:21,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:21,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:21,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:01:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:01:21,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:01:21,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1867710, now seen corresponding path program 1 times [2023-09-01 08:01:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117531500] [2023-09-01 08:01:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117531500] [2023-09-01 08:01:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117531500] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:01:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639023569] [2023-09-01 08:01:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:01:21,968 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) [2023-09-01 08:01:22,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:01:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:01:22,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:01:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:22,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:01:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639023569] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:01:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:01:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:01:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132937025] [2023-09-01 08:01:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:01:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:01:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:01:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:01:22,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-09-01 08:01:22,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:22,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:22,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-09-01 08:01:22,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:26,612 INFO L130 PetriNetUnfolder]: 25006/32339 cut-off events. [2023-09-01 08:01:26,612 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-09-01 08:01:26,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65363 conditions, 32339 events. 25006/32339 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 183580 event pairs, 15630 based on Foata normal form. 0/12125 useless extension candidates. Maximal degree in co-relation 32712. Up to 16172 conditions per place. [2023-09-01 08:01:26,729 INFO L137 encePairwiseOnDemand]: 787/796 looper letters, 106 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2023-09-01 08:01:26,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 506 flow [2023-09-01 08:01:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:01:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:01:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1387 transitions. [2023-09-01 08:01:26,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356155778894472 [2023-09-01 08:01:26,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1387 transitions. [2023-09-01 08:01:26,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1387 transitions. [2023-09-01 08:01:26,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:01:26,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1387 transitions. [2023-09-01 08:01:26,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:26,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:26,741 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:26,741 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 190 flow. Second operand 4 states and 1387 transitions. [2023-09-01 08:01:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 506 flow [2023-09-01 08:01:26,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:01:26,743 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 178 flow [2023-09-01 08:01:26,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-09-01 08:01:26,744 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2023-09-01 08:01:26,744 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 178 flow [2023-09-01 08:01:26,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:26,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:26,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:01:26,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 08:01:26,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:26,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:01:26,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1867709, now seen corresponding path program 1 times [2023-09-01 08:01:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306344303] [2023-09-01 08:01:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:27,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306344303] [2023-09-01 08:01:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306344303] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:01:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912663383] [2023-09-01 08:01:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:01:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:01:27,045 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) [2023-09-01 08:01:27,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:01:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:27,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:01:27,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:01:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:27,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:01:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912663383] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:01:27,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:01:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:01:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582846035] [2023-09-01 08:01:27,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:01:27,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:01:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:01:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:01:27,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-09-01 08:01:27,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:27,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:27,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-09-01 08:01:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:38,022 INFO L130 PetriNetUnfolder]: 62440/80768 cut-off events. [2023-09-01 08:01:38,022 INFO L131 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2023-09-01 08:01:38,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163229 conditions, 80768 events. 62440/80768 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 4818. Compared 499230 event pairs, 39033 based on Foata normal form. 0/30320 useless extension candidates. Maximal degree in co-relation 130411. Up to 16178 conditions per place. [2023-09-01 08:01:38,363 INFO L137 encePairwiseOnDemand]: 787/796 looper letters, 253 selfloop transitions, 21 changer transitions 0/277 dead transitions. [2023-09-01 08:01:38,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 277 transitions, 1214 flow [2023-09-01 08:01:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:01:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:01:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2191 transitions. [2023-09-01 08:01:38,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45875209380234505 [2023-09-01 08:01:38,368 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2191 transitions. [2023-09-01 08:01:38,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2191 transitions. [2023-09-01 08:01:38,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:01:38,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2191 transitions. [2023-09-01 08:01:38,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 365.1666666666667) internal successors, (2191), 6 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:38,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 796.0) internal successors, (5572), 7 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:38,380 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 796.0) internal successors, (5572), 7 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:38,380 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 178 flow. Second operand 6 states and 2191 transitions. [2023-09-01 08:01:38,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 277 transitions, 1214 flow [2023-09-01 08:01:38,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 277 transitions, 1201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:01:38,383 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 327 flow [2023-09-01 08:01:38,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-09-01 08:01:38,384 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-09-01 08:01:38,384 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 327 flow [2023-09-01 08:01:38,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:38,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:01:38,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:01:38,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:01:38,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:01:38,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:01:38,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:01:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1796828764, now seen corresponding path program 1 times [2023-09-01 08:01:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:01:38,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289514630] [2023-09-01 08:01:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:01:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:01:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:01:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:01:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:01:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289514630] [2023-09-01 08:01:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289514630] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:01:38,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:01:38,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:01:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370152871] [2023-09-01 08:01:38,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:01:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:01:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:01:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:01:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:01:38,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-09-01 08:01:38,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:01:38,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:01:38,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-09-01 08:01:38,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:01:59,392 INFO L130 PetriNetUnfolder]: 125016/161650 cut-off events. [2023-09-01 08:01:59,392 INFO L131 PetriNetUnfolder]: For 801/801 co-relation queries the response was YES. [2023-09-01 08:01:59,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326722 conditions, 161650 events. 125016/161650 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 9260. Compared 1075600 event pairs, 78150 based on Foata normal form. 0/60605 useless extension candidates. Maximal degree in co-relation 195998. Up to 80831 conditions per place. [2023-09-01 08:02:00,298 INFO L137 encePairwiseOnDemand]: 792/796 looper letters, 133 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2023-09-01 08:02:00,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 138 transitions, 777 flow [2023-09-01 08:02:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2023-09-01 08:02:00,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45268006700167507 [2023-09-01 08:02:00,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2023-09-01 08:02:00,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2023-09-01 08:02:00,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:00,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2023-09-01 08:02:00,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:00,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:00,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:00,308 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 327 flow. Second operand 3 states and 1081 transitions. [2023-09-01 08:02:00,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 138 transitions, 777 flow [2023-09-01 08:02:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 736 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:00,311 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 311 flow [2023-09-01 08:02:00,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-09-01 08:02:00,312 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2023-09-01 08:02:00,312 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 311 flow [2023-09-01 08:02:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:00,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:00,313 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:02:00,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:02:00,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:02:00,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash -191911328, now seen corresponding path program 2 times [2023-09-01 08:02:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:00,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342163166] [2023-09-01 08:02:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:00,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342163166] [2023-09-01 08:02:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342163166] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:02:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489632490] [2023-09-01 08:02:00,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:02:00,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:00,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:02:00,380 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) [2023-09-01 08:02:00,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:02:00,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:02:00,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:02:00,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:02:00,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:02:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:02:00,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:02:00,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489632490] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:02:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:02:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234660447] [2023-09-01 08:02:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:00,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:02:00,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 796 [2023-09-01 08:02:00,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:00,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:00,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 796 [2023-09-01 08:02:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:20,371 INFO L130 PetriNetUnfolder]: 125261/161894 cut-off events. [2023-09-01 08:02:20,371 INFO L131 PetriNetUnfolder]: For 814/814 co-relation queries the response was YES. [2023-09-01 08:02:20,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327228 conditions, 161894 events. 125261/161894 cut-off events. For 814/814 co-relation queries the response was YES. Maximal size of possible extension queue 9374. Compared 1076223 event pairs, 78290 based on Foata normal form. 1/60575 useless extension candidates. Maximal degree in co-relation 196308. Up to 161689 conditions per place. [2023-09-01 08:02:21,158 INFO L137 encePairwiseOnDemand]: 793/796 looper letters, 72 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-09-01 08:02:21,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 457 flow [2023-09-01 08:02:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-09-01 08:02:21,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275544388609715 [2023-09-01 08:02:21,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-09-01 08:02:21,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-09-01 08:02:21,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:21,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-09-01 08:02:21,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:21,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:21,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:21,169 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 311 flow. Second operand 3 states and 1021 transitions. [2023-09-01 08:02:21,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 457 flow [2023-09-01 08:02:21,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:02:21,171 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 311 flow [2023-09-01 08:02:21,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2023-09-01 08:02:21,174 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2023-09-01 08:02:21,174 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 311 flow [2023-09-01 08:02:21,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:21,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:21,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-09-01 08:02:21,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:02:21,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:02:21,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:02:21,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash 175670872, now seen corresponding path program 1 times [2023-09-01 08:02:21,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:21,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108875581] [2023-09-01 08:02:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:21,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:02:21,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108875581] [2023-09-01 08:02:21,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108875581] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:21,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:21,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:02:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587547357] [2023-09-01 08:02:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:21,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:02:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:02:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:02:21,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-09-01 08:02:21,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:21,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:21,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-09-01 08:02:21,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:02:43,720 INFO L130 PetriNetUnfolder]: 125261/161889 cut-off events. [2023-09-01 08:02:43,721 INFO L131 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2023-09-01 08:02:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327214 conditions, 161889 events. 125261/161889 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 9374. Compared 1076044 event pairs, 78290 based on Foata normal form. 0/60574 useless extension candidates. Maximal degree in co-relation 327157. Up to 161672 conditions per place. [2023-09-01 08:02:44,563 INFO L137 encePairwiseOnDemand]: 794/796 looper letters, 76 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-09-01 08:02:44,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 461 flow [2023-09-01 08:02:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:02:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:02:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-09-01 08:02:44,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43090452261306533 [2023-09-01 08:02:44,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-09-01 08:02:44,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-09-01 08:02:44,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:02:44,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-09-01 08:02:44,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:44,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:44,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:44,590 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 311 flow. Second operand 3 states and 1029 transitions. [2023-09-01 08:02:44,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 461 flow [2023-09-01 08:02:44,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:02:44,593 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 297 flow [2023-09-01 08:02:44,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=297, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-09-01 08:02:44,596 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2023-09-01 08:02:44,596 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 297 flow [2023-09-01 08:02:44,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:44,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:02:44,597 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:02:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:02:44,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:02:44,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:02:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 140765652, now seen corresponding path program 1 times [2023-09-01 08:02:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:02:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132415818] [2023-09-01 08:02:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:02:44,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:02:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:02:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:02:44,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:02:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132415818] [2023-09-01 08:02:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132415818] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:02:44,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:02:44,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:02:44,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988207229] [2023-09-01 08:02:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:02:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:02:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:02:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:02:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:02:44,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 796 [2023-09-01 08:02:44,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:02:44,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:02:44,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 796 [2023-09-01 08:02:44,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:03:02,424 INFO L130 PetriNetUnfolder]: 112737/145707 cut-off events. [2023-09-01 08:03:02,424 INFO L131 PetriNetUnfolder]: For 735/735 co-relation queries the response was YES. [2023-09-01 08:03:02,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294519 conditions, 145707 events. 112737/145707 cut-off events. For 735/735 co-relation queries the response was YES. Maximal size of possible extension queue 8962. Compared 965885 event pairs, 70461 based on Foata normal form. 2/54525 useless extension candidates. Maximal degree in co-relation 163610. Up to 145520 conditions per place. [2023-09-01 08:03:03,213 INFO L137 encePairwiseOnDemand]: 789/796 looper letters, 70 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2023-09-01 08:03:03,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 473 flow [2023-09-01 08:03:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:03:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:03:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1304 transitions. [2023-09-01 08:03:03,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954773869346733 [2023-09-01 08:03:03,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1304 transitions. [2023-09-01 08:03:03,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1304 transitions. [2023-09-01 08:03:03,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:03:03,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1304 transitions. [2023-09-01 08:03:03,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,222 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 297 flow. Second operand 4 states and 1304 transitions. [2023-09-01 08:03:03,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 473 flow [2023-09-01 08:03:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:03:03,224 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 343 flow [2023-09-01 08:03:03,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2023-09-01 08:03:03,224 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-09-01 08:03:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 343 flow [2023-09-01 08:03:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:03:03,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-09-01 08:03:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:03:03,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-09-01 08:03:03,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:03:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 175670874, now seen corresponding path program 1 times [2023-09-01 08:03:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:03:03,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155356046] [2023-09-01 08:03:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:03:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:03:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155356046] [2023-09-01 08:03:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155356046] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:03:03,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854099263] [2023-09-01 08:03:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:03:03,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:03:03,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:03:03,290 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) [2023-09-01 08:03:03,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:03:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:03:03,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:03:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:03:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:03,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:03:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:03:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854099263] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:03:03,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:03:03,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:03:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908619992] [2023-09-01 08:03:03,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:03:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:03:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:03:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:03:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:03:03,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-09-01 08:03:03,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 326.14285714285717) internal successors, (2283), 7 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:03:03,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:03:03,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-09-01 08:03:03,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand