./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i -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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:40:12,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:40:12,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:40:12,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:40:12,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:40:12,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:40:12,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:40:12,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:40:12,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:40:12,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:40:12,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:40:12,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:40:12,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:40:12,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:40:12,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:40:12,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:40:12,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:40:12,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:40:12,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:40:12,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:40:12,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:40:12,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:40:12,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:40:12,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:40:12,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:40:12,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:40:12,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:40:12,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:40:12,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:40:12,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:40:12,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:40:12,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:40:12,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:40:12,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:40:12,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:40:12,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:40:12,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:40:12,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:40:12,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:40:12,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:40:12,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:40:12,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:40:12,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:40:12,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:40:12,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:40:12,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:40:12,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:40:12,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:40:12,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:40:12,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:40:12,738 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:40:12,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:40:12,739 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:40:12,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:40:12,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:40:12,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:40:12,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:40:12,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:40:12,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:40:12,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:40:12,741 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:40:12,741 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:40:12,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:40:12,741 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:40:12,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:40:12,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:40:12,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:40:12,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:40:12,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:40:12,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:40:12,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:40:12,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:40:12,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:40:12,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:40:12,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:40:12,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:40:12,744 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:40:12,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:40:12,744 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:40:12,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:40:13,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:40:13,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:40:13,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:40:13,103 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:40:13,104 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:40:13,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-30 10:40:14,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:40:14,598 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:40:14,599 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-08-30 10:40:14,617 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f190f94/626c076b7ad24a31b387313b15fd320a/FLAG0b8670f2d [2023-08-30 10:40:14,633 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f190f94/626c076b7ad24a31b387313b15fd320a [2023-08-30 10:40:14,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:40:14,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:40:14,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:40:14,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:40:14,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:40:14,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:40:14" (1/1) ... [2023-08-30 10:40:14,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282eddf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:14, skipping insertion in model container [2023-08-30 10:40:14,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:40:14" (1/1) ... [2023-08-30 10:40:14,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:40:14,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:40:15,291 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-08-30 10:40:15,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:40:15,348 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:40:15,392 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i[58135,58148] [2023-08-30 10:40:15,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:40:15,542 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:40:15,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15 WrapperNode [2023-08-30 10:40:15,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:40:15,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:40:15,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:40:15,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:40:15,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,623 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 250 [2023-08-30 10:40:15,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:40:15,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:40:15,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:40:15,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:40:15,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:40:15,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:40:15,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:40:15,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:40:15,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (1/1) ... [2023-08-30 10:40:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:40:15,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:15,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:40:15,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:40:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:40:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:40:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 10:40:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:40:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:40:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:40:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:40:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:40:15,776 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:40:15,999 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:40:16,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:40:16,408 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:40:16,415 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:40:16,418 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 10:40:16,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:40:16 BoogieIcfgContainer [2023-08-30 10:40:16,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:40:16,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:40:16,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:40:16,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:40:16,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:40:14" (1/3) ... [2023-08-30 10:40:16,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d5d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:40:16, skipping insertion in model container [2023-08-30 10:40:16,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:40:15" (2/3) ... [2023-08-30 10:40:16,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d5d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:40:16, skipping insertion in model container [2023-08-30 10:40:16,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:40:16" (3/3) ... [2023-08-30 10:40:16,429 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-08-30 10:40:16,436 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:40:16,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:40:16,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:40:16,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:40:16,543 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:40:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 262 transitions, 532 flow [2023-08-30 10:40:16,739 INFO L130 PetriNetUnfolder]: 45/372 cut-off events. [2023-08-30 10:40:16,739 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:40:16,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 372 events. 45/372 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1137 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-30 10:40:16,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 262 transitions, 532 flow [2023-08-30 10:40:16,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 259 transitions, 526 flow [2023-08-30 10:40:16,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:40:16,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 259 transitions, 526 flow [2023-08-30 10:40:16,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 259 transitions, 526 flow [2023-08-30 10:40:16,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 259 transitions, 526 flow [2023-08-30 10:40:16,842 INFO L130 PetriNetUnfolder]: 44/369 cut-off events. [2023-08-30 10:40:16,842 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:40:16,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 369 events. 44/369 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1135 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-30 10:40:16,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 20400 [2023-08-30 10:40:26,777 INFO L134 LiptonReduction]: Checked pairs total: 42047 [2023-08-30 10:40:26,777 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 10:40:26,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:40:26,803 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;@112ad2ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:40:26,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:40:26,808 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-30 10:40:26,808 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:40:26,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:26,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:40:26,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:26,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 29696299, now seen corresponding path program 1 times [2023-08-30 10:40:26,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898058854] [2023-08-30 10:40:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898058854] [2023-08-30 10:40:27,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898058854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:27,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:27,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:40:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556661381] [2023-08-30 10:40:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:27,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:27,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 467 [2023-08-30 10:40:27,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 95 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:27,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:27,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 467 [2023-08-30 10:40:27,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:27,484 INFO L130 PetriNetUnfolder]: 795/1704 cut-off events. [2023-08-30 10:40:27,485 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:40:27,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 1704 events. 795/1704 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10168 event pairs, 0 based on Foata normal form. 146/1514 useless extension candidates. Maximal degree in co-relation 3241. Up to 1548 conditions per place. [2023-08-30 10:40:27,494 INFO L137 encePairwiseOnDemand]: 440/467 looper letters, 84 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-30 10:40:27,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 372 flow [2023-08-30 10:40:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-08-30 10:40:27,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767309064953604 [2023-08-30 10:40:27,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-08-30 10:40:27,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-08-30 10:40:27,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:27,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-08-30 10:40:27,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:27,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:27,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:27,534 INFO L175 Difference]: Start difference. First operand has 74 places, 95 transitions, 198 flow. Second operand 3 states and 808 transitions. [2023-08-30 10:40:27,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 372 flow [2023-08-30 10:40:27,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:40:27,558 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 158 flow [2023-08-30 10:40:27,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-08-30 10:40:27,564 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-08-30 10:40:27,564 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 158 flow [2023-08-30 10:40:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:27,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:27,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:27,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:40:27,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:27,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1195795373, now seen corresponding path program 1 times [2023-08-30 10:40:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255630348] [2023-08-30 10:40:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255630348] [2023-08-30 10:40:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255630348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:28,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 10:40:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709216853] [2023-08-30 10:40:28,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:40:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:40:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:40:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 467 [2023-08-30 10:40:29,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 158 flow. Second operand has 11 states, 11 states have (on average 206.27272727272728) internal successors, (2269), 11 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:29,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:29,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 467 [2023-08-30 10:40:29,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:30,127 INFO L130 PetriNetUnfolder]: 1394/3041 cut-off events. [2023-08-30 10:40:30,128 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 10:40:30,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 3041 events. 1394/3041 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 20503 event pairs, 23 based on Foata normal form. 0/2534 useless extension candidates. Maximal degree in co-relation 5931. Up to 1583 conditions per place. [2023-08-30 10:40:30,142 INFO L137 encePairwiseOnDemand]: 450/467 looper letters, 215 selfloop transitions, 37 changer transitions 0/260 dead transitions. [2023-08-30 10:40:30,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 260 transitions, 1071 flow [2023-08-30 10:40:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:40:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:40:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1893 transitions. [2023-08-30 10:40:30,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066916488222698 [2023-08-30 10:40:30,148 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1893 transitions. [2023-08-30 10:40:30,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1893 transitions. [2023-08-30 10:40:30,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:30,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1893 transitions. [2023-08-30 10:40:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 236.625) internal successors, (1893), 8 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:30,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:30,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:30,161 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 158 flow. Second operand 8 states and 1893 transitions. [2023-08-30 10:40:30,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 260 transitions, 1071 flow [2023-08-30 10:40:30,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 260 transitions, 1057 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:40:30,166 INFO L231 Difference]: Finished difference. Result has 83 places, 111 transitions, 409 flow [2023-08-30 10:40:30,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=83, PETRI_TRANSITIONS=111} [2023-08-30 10:40:30,167 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2023-08-30 10:40:30,167 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 111 transitions, 409 flow [2023-08-30 10:40:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 206.27272727272728) internal successors, (2269), 11 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:40:30,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:30,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1195795439, now seen corresponding path program 1 times [2023-08-30 10:40:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237815696] [2023-08-30 10:40:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:30,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:30,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:30,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237815696] [2023-08-30 10:40:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237815696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 10:40:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328086218] [2023-08-30 10:40:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:40:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:40:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:40:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 467 [2023-08-30 10:40:31,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 111 transitions, 409 flow. Second operand has 11 states, 11 states have (on average 206.27272727272728) internal successors, (2269), 11 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:31,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:31,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 467 [2023-08-30 10:40:31,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:32,421 INFO L130 PetriNetUnfolder]: 1266/2822 cut-off events. [2023-08-30 10:40:32,422 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2023-08-30 10:40:32,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6467 conditions, 2822 events. 1266/2822 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18865 event pairs, 284 based on Foata normal form. 66/2517 useless extension candidates. Maximal degree in co-relation 6424. Up to 1772 conditions per place. [2023-08-30 10:40:32,437 INFO L137 encePairwiseOnDemand]: 450/467 looper letters, 211 selfloop transitions, 36 changer transitions 0/255 dead transitions. [2023-08-30 10:40:32,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 255 transitions, 1216 flow [2023-08-30 10:40:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:40:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:40:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1882 transitions. [2023-08-30 10:40:32,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037473233404711 [2023-08-30 10:40:32,442 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1882 transitions. [2023-08-30 10:40:32,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1882 transitions. [2023-08-30 10:40:32,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:32,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1882 transitions. [2023-08-30 10:40:32,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 235.25) internal successors, (1882), 8 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:32,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:32,454 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:32,454 INFO L175 Difference]: Start difference. First operand has 83 places, 111 transitions, 409 flow. Second operand 8 states and 1882 transitions. [2023-08-30 10:40:32,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 255 transitions, 1216 flow [2023-08-30 10:40:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 255 transitions, 1181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:40:32,462 INFO L231 Difference]: Finished difference. Result has 89 places, 116 transitions, 489 flow [2023-08-30 10:40:32,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=89, PETRI_TRANSITIONS=116} [2023-08-30 10:40:32,463 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-30 10:40:32,463 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 116 transitions, 489 flow [2023-08-30 10:40:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 206.27272727272728) internal successors, (2269), 11 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:32,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:32,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:32,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:40:32,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:32,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash 261827588, now seen corresponding path program 1 times [2023-08-30 10:40:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330070289] [2023-08-30 10:40:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:33,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:33,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330070289] [2023-08-30 10:40:33,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330070289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:40:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240280500] [2023-08-30 10:40:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:33,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:33,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:40:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:33,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 10:40:33,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:33,423 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:40:33,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:40:33,643 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-30 10:40:33,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2023-08-30 10:40:33,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:40:33,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:40:33,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:33,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:33,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:33,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:34,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:34,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 47 [2023-08-30 10:40:34,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:34,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 70 [2023-08-30 10:40:34,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-08-30 10:40:34,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-08-30 10:40:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240280500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:34,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-30 10:40:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075739559] [2023-08-30 10:40:34,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 10:40:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 10:40:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=664, Unknown=14, NotChecked=0, Total=812 [2023-08-30 10:40:34,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 467 [2023-08-30 10:40:34,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 489 flow. Second operand has 29 states, 29 states have (on average 164.6551724137931) internal successors, (4775), 29 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:34,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:34,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 467 [2023-08-30 10:40:34,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:37,260 INFO L130 PetriNetUnfolder]: 1321/2933 cut-off events. [2023-08-30 10:40:37,260 INFO L131 PetriNetUnfolder]: For 1141/1141 co-relation queries the response was YES. [2023-08-30 10:40:37,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 2933 events. 1321/2933 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19800 event pairs, 137 based on Foata normal form. 2/2585 useless extension candidates. Maximal degree in co-relation 7039. Up to 1585 conditions per place. [2023-08-30 10:40:37,279 INFO L137 encePairwiseOnDemand]: 448/467 looper letters, 244 selfloop transitions, 51 changer transitions 1/304 dead transitions. [2023-08-30 10:40:37,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 304 transitions, 1529 flow [2023-08-30 10:40:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:40:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:40:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1750 transitions. [2023-08-30 10:40:37,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41636926005234354 [2023-08-30 10:40:37,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1750 transitions. [2023-08-30 10:40:37,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1750 transitions. [2023-08-30 10:40:37,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:37,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1750 transitions. [2023-08-30 10:40:37,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.44444444444446) internal successors, (1750), 9 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 467.0) internal successors, (4670), 10 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 467.0) internal successors, (4670), 10 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,296 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 489 flow. Second operand 9 states and 1750 transitions. [2023-08-30 10:40:37,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 304 transitions, 1529 flow [2023-08-30 10:40:37,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 304 transitions, 1485 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-30 10:40:37,307 INFO L231 Difference]: Finished difference. Result has 97 places, 134 transitions, 757 flow [2023-08-30 10:40:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=757, PETRI_PLACES=97, PETRI_TRANSITIONS=134} [2023-08-30 10:40:37,308 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2023-08-30 10:40:37,308 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 134 transitions, 757 flow [2023-08-30 10:40:37,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 164.6551724137931) internal successors, (4775), 29 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:37,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:37,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:37,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 10:40:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:37,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:37,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 261827654, now seen corresponding path program 1 times [2023-08-30 10:40:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434363814] [2023-08-30 10:40:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434363814] [2023-08-30 10:40:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434363814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:40:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696690549] [2023-08-30 10:40:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:38,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:38,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:38,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:40:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:38,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-30 10:40:38,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:38,348 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-08-30 10:40:38,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 19 [2023-08-30 10:40:38,393 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 10:40:38,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:40:38,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:40:38,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:38,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:38,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:38,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:38,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:38,666 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_t_funThread1of1ForFork0_insert_~list#1.base| v_ArrVal_473) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-08-30 10:40:38,758 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_470 (Array Int Int)) (v_ArrVal_472 Int) (v_ArrVal_473 (Array Int Int))) (< (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_470))) (store .cse0 |c_t_funThread1of1ForFork0_~p~0#1.base| (store (select .cse0 |c_t_funThread1of1ForFork0_~p~0#1.base|) (+ |c_t_funThread1of1ForFork0_~p~0#1.offset| 4) v_ArrVal_472))) |c_~#A~0.base| v_ArrVal_473) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-08-30 10:40:38,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:38,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2023-08-30 10:40:38,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:38,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 62 [2023-08-30 10:40:38,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-08-30 10:40:38,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-08-30 10:40:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:40:38,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696690549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:38,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:38,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-30 10:40:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274939245] [2023-08-30 10:40:38,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:38,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 10:40:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 10:40:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=484, Unknown=5, NotChecked=94, Total=702 [2023-08-30 10:40:39,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 467 [2023-08-30 10:40:39,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 134 transitions, 757 flow. Second operand has 27 states, 27 states have (on average 165.59259259259258) internal successors, (4471), 27 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:39,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:39,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 467 [2023-08-30 10:40:39,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:40,634 INFO L130 PetriNetUnfolder]: 1323/2934 cut-off events. [2023-08-30 10:40:40,634 INFO L131 PetriNetUnfolder]: For 2796/2796 co-relation queries the response was YES. [2023-08-30 10:40:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8231 conditions, 2934 events. 1323/2934 cut-off events. For 2796/2796 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19718 event pairs, 181 based on Foata normal form. 1/2585 useless extension candidates. Maximal degree in co-relation 8182. Up to 1698 conditions per place. [2023-08-30 10:40:40,673 INFO L137 encePairwiseOnDemand]: 451/467 looper letters, 227 selfloop transitions, 41 changer transitions 0/276 dead transitions. [2023-08-30 10:40:40,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 276 transitions, 1588 flow [2023-08-30 10:40:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:40:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:40:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1558 transitions. [2023-08-30 10:40:40,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170235546038544 [2023-08-30 10:40:40,680 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1558 transitions. [2023-08-30 10:40:40,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1558 transitions. [2023-08-30 10:40:40,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:40,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1558 transitions. [2023-08-30 10:40:40,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.75) internal successors, (1558), 8 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:40,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:40,694 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 467.0) internal successors, (4203), 9 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:40,695 INFO L175 Difference]: Start difference. First operand has 97 places, 134 transitions, 757 flow. Second operand 8 states and 1558 transitions. [2023-08-30 10:40:40,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 276 transitions, 1588 flow [2023-08-30 10:40:40,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 276 transitions, 1534 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 10:40:40,716 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 776 flow [2023-08-30 10:40:40,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2023-08-30 10:40:40,720 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2023-08-30 10:40:40,721 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 776 flow [2023-08-30 10:40:40,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 165.59259259259258) internal successors, (4471), 27 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:40,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:40,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:40,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:40,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:40,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 288658771, now seen corresponding path program 1 times [2023-08-30 10:40:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:40,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140691987] [2023-08-30 10:40:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140691987] [2023-08-30 10:40:40,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140691987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:40:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795683602] [2023-08-30 10:40:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:40,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:41,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:40:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:40:41,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:41,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:41,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795683602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:41,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:40:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362591739] [2023-08-30 10:40:41,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:40:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:40:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:40:41,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-30 10:40:41,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 776 flow. Second operand has 7 states, 7 states have (on average 231.57142857142858) internal successors, (1621), 7 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:41,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:41,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-30 10:40:41,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:41,269 INFO L130 PetriNetUnfolder]: 38/139 cut-off events. [2023-08-30 10:40:41,269 INFO L131 PetriNetUnfolder]: For 153/153 co-relation queries the response was YES. [2023-08-30 10:40:41,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 139 events. 38/139 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 431 event pairs, 0 based on Foata normal form. 21/156 useless extension candidates. Maximal degree in co-relation 403. Up to 93 conditions per place. [2023-08-30 10:40:41,270 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 40 selfloop transitions, 2 changer transitions 13/60 dead transitions. [2023-08-30 10:40:41,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 407 flow [2023-08-30 10:40:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:40:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:40:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 958 transitions. [2023-08-30 10:40:41,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512847965738758 [2023-08-30 10:40:41,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 958 transitions. [2023-08-30 10:40:41,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 958 transitions. [2023-08-30 10:40:41,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:41,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 958 transitions. [2023-08-30 10:40:41,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:41,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:41,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:41,294 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 776 flow. Second operand 4 states and 958 transitions. [2023-08-30 10:40:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 407 flow [2023-08-30 10:40:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 303 flow, removed 2 selfloop flow, removed 17 redundant places. [2023-08-30 10:40:41,297 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 120 flow [2023-08-30 10:40:41,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-30 10:40:41,298 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -26 predicate places. [2023-08-30 10:40:41,299 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 120 flow [2023-08-30 10:40:41,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 231.57142857142858) internal successors, (1621), 7 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:41,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:41,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:41,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:41,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:41,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:41,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1292595805, now seen corresponding path program 1 times [2023-08-30 10:40:41,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:41,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593757966] [2023-08-30 10:40:41,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:41,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:42,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593757966] [2023-08-30 10:40:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593757966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:42,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 10:40:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460074562] [2023-08-30 10:40:42,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:42,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:40:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:40:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:40:42,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 467 [2023-08-30 10:40:42,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 120 flow. Second operand has 13 states, 13 states have (on average 201.30769230769232) internal successors, (2617), 13 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:42,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:42,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 467 [2023-08-30 10:40:42,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:43,411 INFO L130 PetriNetUnfolder]: 26/109 cut-off events. [2023-08-30 10:40:43,411 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 10:40:43,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 109 events. 26/109 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 267. Up to 29 conditions per place. [2023-08-30 10:40:43,412 INFO L137 encePairwiseOnDemand]: 457/467 looper letters, 32 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2023-08-30 10:40:43,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 275 flow [2023-08-30 10:40:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 10:40:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 10:40:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2248 transitions. [2023-08-30 10:40:43,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376094997080008 [2023-08-30 10:40:43,418 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2248 transitions. [2023-08-30 10:40:43,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2248 transitions. [2023-08-30 10:40:43,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:43,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2248 transitions. [2023-08-30 10:40:43,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.36363636363637) internal successors, (2248), 11 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 467.0) internal successors, (5604), 12 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,430 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 467.0) internal successors, (5604), 12 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,430 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 120 flow. Second operand 11 states and 2248 transitions. [2023-08-30 10:40:43,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 275 flow [2023-08-30 10:40:43,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:40:43,432 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 194 flow [2023-08-30 10:40:43,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-30 10:40:43,433 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -20 predicate places. [2023-08-30 10:40:43,433 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 194 flow [2023-08-30 10:40:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 201.30769230769232) internal successors, (2617), 13 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:40:43,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:43,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1292595833, now seen corresponding path program 1 times [2023-08-30 10:40:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239353644] [2023-08-30 10:40:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239353644] [2023-08-30 10:40:43,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239353644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:40:43,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:40:43,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:40:43,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386062099] [2023-08-30 10:40:43,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:40:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:40:43,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:40:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:40:43,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 467 [2023-08-30 10:40:43,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:43,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 467 [2023-08-30 10:40:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:43,644 INFO L130 PetriNetUnfolder]: 24/106 cut-off events. [2023-08-30 10:40:43,646 INFO L131 PetriNetUnfolder]: For 123/129 co-relation queries the response was YES. [2023-08-30 10:40:43,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 106 events. 24/106 cut-off events. For 123/129 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 281 event pairs, 12 based on Foata normal form. 8/114 useless extension candidates. Maximal degree in co-relation 310. Up to 74 conditions per place. [2023-08-30 10:40:43,647 INFO L137 encePairwiseOnDemand]: 463/467 looper letters, 26 selfloop transitions, 4 changer transitions 3/37 dead transitions. [2023-08-30 10:40:43,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 37 transitions, 260 flow [2023-08-30 10:40:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:40:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:40:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-30 10:40:43,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796573875802998 [2023-08-30 10:40:43,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-30 10:40:43,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-30 10:40:43,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:43,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-30 10:40:43,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,654 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 194 flow. Second operand 3 states and 672 transitions. [2023-08-30 10:40:43,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 37 transitions, 260 flow [2023-08-30 10:40:43,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 232 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 10:40:43,656 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 162 flow [2023-08-30 10:40:43,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-30 10:40:43,658 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -22 predicate places. [2023-08-30 10:40:43,658 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 162 flow [2023-08-30 10:40:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:43,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:43,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:40:43,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:43,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -869784886, now seen corresponding path program 1 times [2023-08-30 10:40:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902472411] [2023-08-30 10:40:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902472411] [2023-08-30 10:40:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902472411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:40:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52728695] [2023-08-30 10:40:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:44,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:44,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:44,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:40:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 10:40:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:44,642 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-08-30 10:40:44,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 30 [2023-08-30 10:40:44,701 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 10:40:44,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:40:44,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:40:44,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:44,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:40:44,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:45,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:40:45,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:45,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:45,180 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_949 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_949) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483648))) is different from false [2023-08-30 10:40:45,192 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_947 Int) (v_ArrVal_949 (Array Int Int))) (or (< v_ArrVal_947 (+ |c_t_funThread1of1ForFork0_#t~post38#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_~p~0#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset| v_ArrVal_947)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_949) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483648)))) is different from false [2023-08-30 10:40:45,203 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_947 Int) (v_ArrVal_949 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_~p~0#1.base|))) (or (< v_ArrVal_947 (+ (select .cse0 |c_t_funThread1of1ForFork0_~p~0#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_~p~0#1.base| (store .cse0 |c_t_funThread1of1ForFork0_~p~0#1.offset| v_ArrVal_947)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_949) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483648))))) is different from false [2023-08-30 10:40:45,243 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_946 (Array Int Int)) (v_ArrVal_947 Int) (v_ArrVal_949 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_t_funThread1of1ForFork0_insert_~list#1.base| v_ArrVal_946))) (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_~p~0#1.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_t_funThread1of1ForFork0_~p~0#1.base| (store .cse1 |c_t_funThread1of1ForFork0_~p~0#1.offset| v_ArrVal_947)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_949) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483648)) (< v_ArrVal_947 (+ (select .cse1 |c_t_funThread1of1ForFork0_~p~0#1.offset|) 1)))))) is different from false [2023-08-30 10:40:45,621 INFO L321 Elim1Store]: treesize reduction 34, result has 60.0 percent of original size [2023-08-30 10:40:45,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 89 [2023-08-30 10:40:45,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:45,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 129 [2023-08-30 10:40:45,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-08-30 10:40:45,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 10:40:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:40:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52728695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:45,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:45,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-30 10:40:45,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948687312] [2023-08-30 10:40:45,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:45,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 10:40:45,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 10:40:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=817, Unknown=4, NotChecked=244, Total=1190 [2023-08-30 10:40:48,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:40:48,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 467 [2023-08-30 10:40:48,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 162 flow. Second operand has 35 states, 35 states have (on average 158.62857142857143) internal successors, (5552), 35 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:48,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:48,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 467 [2023-08-30 10:40:48,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:51,181 INFO L130 PetriNetUnfolder]: 23/101 cut-off events. [2023-08-30 10:40:51,181 INFO L131 PetriNetUnfolder]: For 82/86 co-relation queries the response was YES. [2023-08-30 10:40:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 101 events. 23/101 cut-off events. For 82/86 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 260 event pairs, 1 based on Foata normal form. 6/107 useless extension candidates. Maximal degree in co-relation 305. Up to 36 conditions per place. [2023-08-30 10:40:51,182 INFO L137 encePairwiseOnDemand]: 457/467 looper letters, 18 selfloop transitions, 9 changer transitions 7/38 dead transitions. [2023-08-30 10:40:51,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 38 transitions, 235 flow [2023-08-30 10:40:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:40:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:40:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1602 transitions. [2023-08-30 10:40:51,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3430406852248394 [2023-08-30 10:40:51,187 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1602 transitions. [2023-08-30 10:40:51,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1602 transitions. [2023-08-30 10:40:51,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:51,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1602 transitions. [2023-08-30 10:40:51,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.2) internal successors, (1602), 10 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:51,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:51,200 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 467.0) internal successors, (5137), 11 states have internal predecessors, (5137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:51,200 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 162 flow. Second operand 10 states and 1602 transitions. [2023-08-30 10:40:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 38 transitions, 235 flow [2023-08-30 10:40:51,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 210 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 10:40:51,202 INFO L231 Difference]: Finished difference. Result has 50 places, 25 transitions, 117 flow [2023-08-30 10:40:51,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=25} [2023-08-30 10:40:51,202 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -24 predicate places. [2023-08-30 10:40:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 25 transitions, 117 flow [2023-08-30 10:40:51,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 158.62857142857143) internal successors, (5552), 35 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:51,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:40:51,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:51,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:51,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:51,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:40:51,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:40:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash -869784858, now seen corresponding path program 1 times [2023-08-30 10:40:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:40:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290712336] [2023-08-30 10:40:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:51,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:40:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:40:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290712336] [2023-08-30 10:40:51,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290712336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:40:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496730238] [2023-08-30 10:40:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:40:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:40:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:40:51,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:40:51,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:40:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:40:51,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:40:51,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:40:51,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:40:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:40:51,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:40:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:40:51,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:40:51,834 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1116 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1116) |c_t_funThread1of1ForFork0_~p~0#1.base|) |c_t_funThread1of1ForFork0_~p~0#1.offset|) 2147483649)) is different from false [2023-08-30 10:40:51,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:40:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:40:51,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:40:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:40:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496730238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:40:51,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:40:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 10:40:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092599469] [2023-08-30 10:40:51,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:40:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:40:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:40:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:40:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2023-08-30 10:40:51,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 467 [2023-08-30 10:40:51,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 25 transitions, 117 flow. Second operand has 11 states, 11 states have (on average 185.8181818181818) internal successors, (2044), 11 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:51,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:40:51,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 467 [2023-08-30 10:40:51,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:40:52,059 INFO L130 PetriNetUnfolder]: 15/75 cut-off events. [2023-08-30 10:40:52,060 INFO L131 PetriNetUnfolder]: For 41/42 co-relation queries the response was YES. [2023-08-30 10:40:52,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 75 events. 15/75 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 2 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 222. Up to 44 conditions per place. [2023-08-30 10:40:52,060 INFO L137 encePairwiseOnDemand]: 463/467 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-30 10:40:52,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 25 transitions, 157 flow [2023-08-30 10:40:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:40:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:40:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 931 transitions. [2023-08-30 10:40:52,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987152034261242 [2023-08-30 10:40:52,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 931 transitions. [2023-08-30 10:40:52,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 931 transitions. [2023-08-30 10:40:52,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:40:52,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 931 transitions. [2023-08-30 10:40:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.2) internal successors, (931), 5 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:52,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:52,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:52,070 INFO L175 Difference]: Start difference. First operand has 50 places, 25 transitions, 117 flow. Second operand 5 states and 931 transitions. [2023-08-30 10:40:52,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 25 transitions, 157 flow [2023-08-30 10:40:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 121 flow, removed 0 selfloop flow, removed 17 redundant places. [2023-08-30 10:40:52,071 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-30 10:40:52,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-30 10:40:52,072 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -40 predicate places. [2023-08-30 10:40:52,073 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-30 10:40:52,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.8181818181818) internal successors, (2044), 11 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:40:52,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:40:52,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:40:52,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:40:52,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:40:52,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:40:52,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:40:52,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:40:52,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:40:52,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:40:52,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:40:52,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:40:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 10:40:52,285 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:40:52,287 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:40:52,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 262 transitions, 532 flow [2023-08-30 10:40:52,326 INFO L130 PetriNetUnfolder]: 45/372 cut-off events. [2023-08-30 10:40:52,326 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:40:52,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 372 events. 45/372 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1137 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-30 10:40:52,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 262 transitions, 532 flow [2023-08-30 10:40:52,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 253 transitions, 511 flow [2023-08-30 10:40:52,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:40:52,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 253 transitions, 511 flow [2023-08-30 10:40:52,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 253 transitions, 511 flow [2023-08-30 10:40:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 253 transitions, 511 flow [2023-08-30 10:40:52,356 INFO L130 PetriNetUnfolder]: 44/363 cut-off events. [2023-08-30 10:40:52,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:40:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 363 events. 44/363 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1089 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-30 10:40:52,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 20400 [2023-08-30 10:41:02,209 INFO L134 LiptonReduction]: Checked pairs total: 45598 [2023-08-30 10:41:02,210 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-08-30 10:41:02,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:41:02,211 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;@112ad2ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:41:02,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:41:02,214 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 10:41:02,214 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:41:02,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:02,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:41:02,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:41:02,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash 205586807, now seen corresponding path program 1 times [2023-08-30 10:41:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:02,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805702837] [2023-08-30 10:41:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:02,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:41:02,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:41:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:41:02,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:41:02,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:41:02,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:41:02,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:41:02,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:41:02,257 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:41:02,258 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:41:02,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:41:02,286 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:41:02,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,349 INFO L130 PetriNetUnfolder]: 76/605 cut-off events. [2023-08-30 10:41:02,350 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:41:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 605 events. 76/605 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2427 event pairs, 0 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 374. Up to 12 conditions per place. [2023-08-30 10:41:02,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,362 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:41:02,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 349 transitions, 716 flow [2023-08-30 10:41:02,421 INFO L130 PetriNetUnfolder]: 76/605 cut-off events. [2023-08-30 10:41:02,422 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:41:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 605 events. 76/605 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2427 event pairs, 0 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 374. Up to 12 conditions per place. [2023-08-30 10:41:02,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 58480 [2023-08-30 10:41:12,770 INFO L134 LiptonReduction]: Checked pairs total: 124257 [2023-08-30 10:41:12,770 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-08-30 10:41:12,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:41:12,772 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;@112ad2ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:41:12,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:41:12,774 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 10:41:12,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:41:12,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:12,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:41:12,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:41:12,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1786600548, now seen corresponding path program 1 times [2023-08-30 10:41:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:12,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491898413] [2023-08-30 10:41:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491898413] [2023-08-30 10:41:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491898413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:12,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:12,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:41:12,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646354609] [2023-08-30 10:41:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:12,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:41:12,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:41:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:41:12,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 618 [2023-08-30 10:41:12,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 141 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:12,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:12,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 618 [2023-08-30 10:41:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:16,954 INFO L130 PetriNetUnfolder]: 42748/66434 cut-off events. [2023-08-30 10:41:16,954 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-08-30 10:41:17,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129940 conditions, 66434 events. 42748/66434 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 499032 event pairs, 19728 based on Foata normal form. 5673/56835 useless extension candidates. Maximal degree in co-relation 8830. Up to 63304 conditions per place. [2023-08-30 10:41:17,396 INFO L137 encePairwiseOnDemand]: 580/618 looper letters, 113 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-08-30 10:41:17,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 514 flow [2023-08-30 10:41:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:41:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:41:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-08-30 10:41:17,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760517799352751 [2023-08-30 10:41:17,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-08-30 10:41:17,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-08-30 10:41:17,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:17,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-08-30 10:41:17,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:17,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:17,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:17,406 INFO L175 Difference]: Start difference. First operand has 107 places, 141 transitions, 300 flow. Second operand 3 states and 1068 transitions. [2023-08-30 10:41:17,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 514 flow [2023-08-30 10:41:17,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 133 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:41:17,409 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 250 flow [2023-08-30 10:41:17,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2023-08-30 10:41:17,410 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 3 predicate places. [2023-08-30 10:41:17,410 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 250 flow [2023-08-30 10:41:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:17,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:17,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:41:17,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:41:17,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:41:17,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 41057782, now seen corresponding path program 1 times [2023-08-30 10:41:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010724021] [2023-08-30 10:41:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:41:17,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010724021] [2023-08-30 10:41:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010724021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:17,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:17,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:41:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274170209] [2023-08-30 10:41:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:41:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:41:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:41:17,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 618 [2023-08-30 10:41:17,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:17,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:17,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 618 [2023-08-30 10:41:17,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:21,409 INFO L130 PetriNetUnfolder]: 40908/64439 cut-off events. [2023-08-30 10:41:21,410 INFO L131 PetriNetUnfolder]: For 749/749 co-relation queries the response was YES. [2023-08-30 10:41:21,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128029 conditions, 64439 events. 40908/64439 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 507788 event pairs, 2900 based on Foata normal form. 0/50783 useless extension candidates. Maximal degree in co-relation 124900. Up to 56829 conditions per place. [2023-08-30 10:41:21,730 INFO L137 encePairwiseOnDemand]: 614/618 looper letters, 134 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2023-08-30 10:41:21,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 156 transitions, 618 flow [2023-08-30 10:41:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:41:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:41:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-30 10:41:21,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614886731391586 [2023-08-30 10:41:21,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-30 10:41:21,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-30 10:41:21,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:21,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-30 10:41:21,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:21,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:21,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:21,738 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 250 flow. Second operand 3 states and 1041 transitions. [2023-08-30 10:41:21,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 156 transitions, 618 flow [2023-08-30 10:41:21,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:41:21,741 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 260 flow [2023-08-30 10:41:21,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2023-08-30 10:41:21,742 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2023-08-30 10:41:21,742 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 260 flow [2023-08-30 10:41:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:21,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:41:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:41:21,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:41:21,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 41057685, now seen corresponding path program 1 times [2023-08-30 10:41:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462315773] [2023-08-30 10:41:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:21,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462315773] [2023-08-30 10:41:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462315773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:41:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842190583] [2023-08-30 10:41:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:21,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:21,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:21,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:21,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:41:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:41:21,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:21,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:41:21,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842190583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:21,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:41:21,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:41:21,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434873067] [2023-08-30 10:41:21,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:21,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:41:21,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:41:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:41:21,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 618 [2023-08-30 10:41:21,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 303.75) internal successors, (1215), 4 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:21,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:21,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 618 [2023-08-30 10:41:21,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:25,987 INFO L130 PetriNetUnfolder]: 40398/62740 cut-off events. [2023-08-30 10:41:25,988 INFO L131 PetriNetUnfolder]: For 5625/5625 co-relation queries the response was YES. [2023-08-30 10:41:26,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125870 conditions, 62740 events. 40398/62740 cut-off events. For 5625/5625 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 464914 event pairs, 18576 based on Foata normal form. 600/50358 useless extension candidates. Maximal degree in co-relation 8451. Up to 59801 conditions per place. [2023-08-30 10:41:26,359 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 111 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-30 10:41:26,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 528 flow [2023-08-30 10:41:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:41:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:41:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1322 transitions. [2023-08-30 10:41:26,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347896440129449 [2023-08-30 10:41:26,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1322 transitions. [2023-08-30 10:41:26,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1322 transitions. [2023-08-30 10:41:26,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:26,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1322 transitions. [2023-08-30 10:41:26,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:26,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:26,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 618.0) internal successors, (3090), 5 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:26,369 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 260 flow. Second operand 4 states and 1322 transitions. [2023-08-30 10:41:26,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 528 flow [2023-08-30 10:41:26,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:41:26,373 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 256 flow [2023-08-30 10:41:26,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2023-08-30 10:41:26,374 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2023-08-30 10:41:26,374 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 256 flow [2023-08-30 10:41:26,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 303.75) internal successors, (1215), 4 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:26,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:26,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:26,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:41:26,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:26,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:41:26,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash 459767603, now seen corresponding path program 1 times [2023-08-30 10:41:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899147369] [2023-08-30 10:41:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899147369] [2023-08-30 10:41:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899147369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:41:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:41:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 10:41:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259765173] [2023-08-30 10:41:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:41:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:41:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:41:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-30 10:41:27,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 618 [2023-08-30 10:41:27,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 256 flow. Second operand has 11 states, 11 states have (on average 272.27272727272725) internal successors, (2995), 11 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:27,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:27,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 618 [2023-08-30 10:41:27,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:41:34,742 INFO L130 PetriNetUnfolder]: 69363/108428 cut-off events. [2023-08-30 10:41:34,743 INFO L131 PetriNetUnfolder]: For 5371/5371 co-relation queries the response was YES. [2023-08-30 10:41:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215490 conditions, 108428 events. 69363/108428 cut-off events. For 5371/5371 co-relation queries the response was YES. Maximal size of possible extension queue 1886. Compared 865247 event pairs, 15591 based on Foata normal form. 955/89899 useless extension candidates. Maximal degree in co-relation 215314. Up to 72350 conditions per place. [2023-08-30 10:41:35,238 INFO L137 encePairwiseOnDemand]: 595/618 looper letters, 463 selfloop transitions, 73 changer transitions 0/549 dead transitions. [2023-08-30 10:41:35,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 549 transitions, 2298 flow [2023-08-30 10:41:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:41:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:41:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3788 transitions. [2023-08-30 10:41:35,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107874865156419 [2023-08-30 10:41:35,246 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3788 transitions. [2023-08-30 10:41:35,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3788 transitions. [2023-08-30 10:41:35,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:41:35,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3788 transitions. [2023-08-30 10:41:35,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.6666666666667) internal successors, (3788), 12 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:35,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:35,267 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:35,267 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 256 flow. Second operand 12 states and 3788 transitions. [2023-08-30 10:41:35,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 549 transitions, 2298 flow [2023-08-30 10:41:35,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 549 transitions, 2291 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:41:35,277 INFO L231 Difference]: Finished difference. Result has 127 places, 202 transitions, 770 flow [2023-08-30 10:41:35,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=770, PETRI_PLACES=127, PETRI_TRANSITIONS=202} [2023-08-30 10:41:35,277 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2023-08-30 10:41:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 202 transitions, 770 flow [2023-08-30 10:41:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.27272727272725) internal successors, (2995), 11 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:35,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:41:35,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:41:35,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:41:35,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:41:35,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:41:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash 367292356, now seen corresponding path program 1 times [2023-08-30 10:41:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:41:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576261610] [2023-08-30 10:41:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:41:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:41:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576261610] [2023-08-30 10:41:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576261610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:41:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146886327] [2023-08-30 10:41:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:41:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:41:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:41:36,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:41:36,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:41:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:41:36,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-30 10:41:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:41:36,331 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:41:36,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:41:36,495 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-30 10:41:36,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2023-08-30 10:41:36,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:41:36,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:41:36,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:41:36,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:41:37,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:41:37,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:41:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:41:37,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:41:37,056 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1521 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1521) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483650))) is different from false [2023-08-30 10:41:39,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:41:39,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2023-08-30 10:41:39,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 125 [2023-08-30 10:41:39,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-30 10:41:39,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 10:41:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:41:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146886327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:41:39,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:41:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-30 10:41:39,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185770186] [2023-08-30 10:41:39,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:41:39,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 10:41:39,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:41:39,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 10:41:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=613, Unknown=20, NotChecked=52, Total=812 [2023-08-30 10:41:39,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 618 [2023-08-30 10:41:39,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 202 transitions, 770 flow. Second operand has 29 states, 29 states have (on average 227.6551724137931) internal successors, (6602), 29 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:41:39,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:41:39,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 618 [2023-08-30 10:41:39,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:01,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:42:03,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:42:09,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:42:12,778 INFO L130 PetriNetUnfolder]: 125785/200166 cut-off events. [2023-08-30 10:42:12,779 INFO L131 PetriNetUnfolder]: For 63330/63339 co-relation queries the response was YES. [2023-08-30 10:42:13,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462537 conditions, 200166 events. 125785/200166 cut-off events. For 63330/63339 co-relation queries the response was YES. Maximal size of possible extension queue 3313. Compared 1758137 event pairs, 31661 based on Foata normal form. 77/168065 useless extension candidates. Maximal degree in co-relation 454970. Up to 75335 conditions per place. [2023-08-30 10:42:14,199 INFO L137 encePairwiseOnDemand]: 538/618 looper letters, 1016 selfloop transitions, 312 changer transitions 0/1341 dead transitions. [2023-08-30 10:42:14,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1341 transitions, 6487 flow [2023-08-30 10:42:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 10:42:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 10:42:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6229 transitions. [2023-08-30 10:42:14,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581494557222713 [2023-08-30 10:42:14,212 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6229 transitions. [2023-08-30 10:42:14,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6229 transitions. [2023-08-30 10:42:14,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:14,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6229 transitions. [2023-08-30 10:42:14,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 283.1363636363636) internal successors, (6229), 22 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:14,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 618.0) internal successors, (14214), 23 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:14,240 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 618.0) internal successors, (14214), 23 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:14,241 INFO L175 Difference]: Start difference. First operand has 127 places, 202 transitions, 770 flow. Second operand 22 states and 6229 transitions. [2023-08-30 10:42:14,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 1341 transitions, 6487 flow [2023-08-30 10:42:22,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 1341 transitions, 6486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:42:22,482 INFO L231 Difference]: Finished difference. Result has 164 places, 473 transitions, 3273 flow [2023-08-30 10:42:22,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3273, PETRI_PLACES=164, PETRI_TRANSITIONS=473} [2023-08-30 10:42:22,482 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 57 predicate places. [2023-08-30 10:42:22,483 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 473 transitions, 3273 flow [2023-08-30 10:42:22,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 227.6551724137931) internal successors, (6602), 29 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:22,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:22,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:22,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:22,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:22,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1572512730, now seen corresponding path program 1 times [2023-08-30 10:42:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889377888] [2023-08-30 10:42:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889377888] [2023-08-30 10:42:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889377888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:42:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848445988] [2023-08-30 10:42:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:22,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:22,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:22,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:42:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:22,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:42:22,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:22,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:42:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848445988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:42:23,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:42:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:42:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623304156] [2023-08-30 10:42:23,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:42:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:42:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:42:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:42:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 618 [2023-08-30 10:42:23,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 473 transitions, 3273 flow. Second operand has 7 states, 7 states have (on average 304.7142857142857) internal successors, (2133), 7 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:23,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:23,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 618 [2023-08-30 10:42:23,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:24,487 INFO L130 PetriNetUnfolder]: 6483/12535 cut-off events. [2023-08-30 10:42:24,487 INFO L131 PetriNetUnfolder]: For 25918/26083 co-relation queries the response was YES. [2023-08-30 10:42:24,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47217 conditions, 12535 events. 6483/12535 cut-off events. For 25918/26083 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 103249 event pairs, 825 based on Foata normal form. 1408/12915 useless extension candidates. Maximal degree in co-relation 47188. Up to 8103 conditions per place. [2023-08-30 10:42:24,584 INFO L137 encePairwiseOnDemand]: 615/618 looper letters, 253 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2023-08-30 10:42:24,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 290 transitions, 2403 flow [2023-08-30 10:42:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:42:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:42:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1628 transitions. [2023-08-30 10:42:24,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268608414239482 [2023-08-30 10:42:24,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1628 transitions. [2023-08-30 10:42:24,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1628 transitions. [2023-08-30 10:42:24,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:24,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1628 transitions. [2023-08-30 10:42:24,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.6) internal successors, (1628), 5 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:24,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:24,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:24,593 INFO L175 Difference]: Start difference. First operand has 164 places, 473 transitions, 3273 flow. Second operand 5 states and 1628 transitions. [2023-08-30 10:42:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 290 transitions, 2403 flow [2023-08-30 10:42:24,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 290 transitions, 2228 flow, removed 72 selfloop flow, removed 12 redundant places. [2023-08-30 10:42:24,727 INFO L231 Difference]: Finished difference. Result has 108 places, 162 transitions, 990 flow [2023-08-30 10:42:24,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=990, PETRI_PLACES=108, PETRI_TRANSITIONS=162} [2023-08-30 10:42:24,728 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 1 predicate places. [2023-08-30 10:42:24,728 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 162 transitions, 990 flow [2023-08-30 10:42:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.7142857142857) internal successors, (2133), 7 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:24,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:24,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:24,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:42:24,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:24,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 328937037, now seen corresponding path program 1 times [2023-08-30 10:42:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:24,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123682515] [2023-08-30 10:42:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123682515] [2023-08-30 10:42:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123682515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:42:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:42:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522721583] [2023-08-30 10:42:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:25,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:42:25,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:42:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:42:25,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 618 [2023-08-30 10:42:25,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 162 transitions, 990 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:25,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:25,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 618 [2023-08-30 10:42:25,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:26,408 INFO L130 PetriNetUnfolder]: 8141/14320 cut-off events. [2023-08-30 10:42:26,408 INFO L131 PetriNetUnfolder]: For 29048/29069 co-relation queries the response was YES. [2023-08-30 10:42:26,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52115 conditions, 14320 events. 8141/14320 cut-off events. For 29048/29069 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 107901 event pairs, 3326 based on Foata normal form. 87/13173 useless extension candidates. Maximal degree in co-relation 52095. Up to 10518 conditions per place. [2023-08-30 10:42:26,514 INFO L137 encePairwiseOnDemand]: 605/618 looper letters, 179 selfloop transitions, 27 changer transitions 2/217 dead transitions. [2023-08-30 10:42:26,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 217 transitions, 1696 flow [2023-08-30 10:42:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:42:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:42:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2023-08-30 10:42:26,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091693635382956 [2023-08-30 10:42:26,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 944 transitions. [2023-08-30 10:42:26,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 944 transitions. [2023-08-30 10:42:26,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:26,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 944 transitions. [2023-08-30 10:42:26,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:26,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:26,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:26,519 INFO L175 Difference]: Start difference. First operand has 108 places, 162 transitions, 990 flow. Second operand 3 states and 944 transitions. [2023-08-30 10:42:26,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 217 transitions, 1696 flow [2023-08-30 10:42:26,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 217 transitions, 1681 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:42:26,576 INFO L231 Difference]: Finished difference. Result has 109 places, 179 transitions, 1235 flow [2023-08-30 10:42:26,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1235, PETRI_PLACES=109, PETRI_TRANSITIONS=179} [2023-08-30 10:42:26,577 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 2 predicate places. [2023-08-30 10:42:26,577 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 179 transitions, 1235 flow [2023-08-30 10:42:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:26,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:26,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:42:26,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:26,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash 328937036, now seen corresponding path program 1 times [2023-08-30 10:42:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283504466] [2023-08-30 10:42:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:27,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:27,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283504466] [2023-08-30 10:42:27,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283504466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:27,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:42:27,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 10:42:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438030052] [2023-08-30 10:42:27,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:42:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:42:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:42:28,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 618 [2023-08-30 10:42:28,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 179 transitions, 1235 flow. Second operand has 13 states, 13 states have (on average 269.38461538461536) internal successors, (3502), 13 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:28,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:28,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 618 [2023-08-30 10:42:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:31,386 INFO L130 PetriNetUnfolder]: 8851/15978 cut-off events. [2023-08-30 10:42:31,387 INFO L131 PetriNetUnfolder]: For 36483/36507 co-relation queries the response was YES. [2023-08-30 10:42:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60659 conditions, 15978 events. 8851/15978 cut-off events. For 36483/36507 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 127758 event pairs, 1272 based on Foata normal form. 93/14919 useless extension candidates. Maximal degree in co-relation 60639. Up to 11077 conditions per place. [2023-08-30 10:42:31,517 INFO L137 encePairwiseOnDemand]: 600/618 looper letters, 315 selfloop transitions, 65 changer transitions 1/390 dead transitions. [2023-08-30 10:42:31,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 390 transitions, 3070 flow [2023-08-30 10:42:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:42:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:42:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2956 transitions. [2023-08-30 10:42:31,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47831715210355985 [2023-08-30 10:42:31,520 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2956 transitions. [2023-08-30 10:42:31,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2956 transitions. [2023-08-30 10:42:31,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2956 transitions. [2023-08-30 10:42:31,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 295.6) internal successors, (2956), 10 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:31,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 618.0) internal successors, (6798), 11 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:31,526 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 618.0) internal successors, (6798), 11 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:31,526 INFO L175 Difference]: Start difference. First operand has 109 places, 179 transitions, 1235 flow. Second operand 10 states and 2956 transitions. [2023-08-30 10:42:31,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 390 transitions, 3070 flow [2023-08-30 10:42:31,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 390 transitions, 2998 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:42:31,608 INFO L231 Difference]: Finished difference. Result has 119 places, 207 transitions, 1620 flow [2023-08-30 10:42:31,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1620, PETRI_PLACES=119, PETRI_TRANSITIONS=207} [2023-08-30 10:42:31,609 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 12 predicate places. [2023-08-30 10:42:31,609 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 207 transitions, 1620 flow [2023-08-30 10:42:31,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 269.38461538461536) internal successors, (3502), 13 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:31,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:31,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:31,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:42:31,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:31,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash -910039045, now seen corresponding path program 1 times [2023-08-30 10:42:31,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:31,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876866877] [2023-08-30 10:42:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:31,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:42:32,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876866877] [2023-08-30 10:42:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876866877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:42:32,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313617038] [2023-08-30 10:42:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:32,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:32,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:42:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:32,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-30 10:42:32,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:32,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:42:32,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:42:32,424 INFO L321 Elim1Store]: treesize reduction 38, result has 26.9 percent of original size [2023-08-30 10:42:32,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 33 [2023-08-30 10:42:32,551 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 10:42:32,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 10:42:32,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:42:32,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:32,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:32,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:42:32,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:42:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313617038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:42:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2023-08-30 10:42:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108837165] [2023-08-30 10:42:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:42:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:42:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-08-30 10:42:33,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 618 [2023-08-30 10:42:33,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 207 transitions, 1620 flow. Second operand has 10 states, 10 states have (on average 275.6) internal successors, (2756), 10 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:33,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:33,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 618 [2023-08-30 10:42:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:36,571 INFO L130 PetriNetUnfolder]: 10955/19717 cut-off events. [2023-08-30 10:42:36,571 INFO L131 PetriNetUnfolder]: For 57940/57966 co-relation queries the response was YES. [2023-08-30 10:42:36,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78709 conditions, 19717 events. 10955/19717 cut-off events. For 57940/57966 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 160457 event pairs, 2295 based on Foata normal form. 108/18473 useless extension candidates. Maximal degree in co-relation 78686. Up to 14128 conditions per place. [2023-08-30 10:42:36,724 INFO L137 encePairwiseOnDemand]: 602/618 looper letters, 321 selfloop transitions, 82 changer transitions 0/412 dead transitions. [2023-08-30 10:42:36,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 412 transitions, 3932 flow [2023-08-30 10:42:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:42:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:42:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2093 transitions. [2023-08-30 10:42:36,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48381877022653724 [2023-08-30 10:42:36,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2093 transitions. [2023-08-30 10:42:36,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2093 transitions. [2023-08-30 10:42:36,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:36,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2093 transitions. [2023-08-30 10:42:36,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:36,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 618.0) internal successors, (4944), 8 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:36,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 618.0) internal successors, (4944), 8 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:36,731 INFO L175 Difference]: Start difference. First operand has 119 places, 207 transitions, 1620 flow. Second operand 7 states and 2093 transitions. [2023-08-30 10:42:36,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 412 transitions, 3932 flow [2023-08-30 10:42:36,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 412 transitions, 3780 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-30 10:42:36,816 INFO L231 Difference]: Finished difference. Result has 124 places, 278 transitions, 2524 flow [2023-08-30 10:42:36,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2524, PETRI_PLACES=124, PETRI_TRANSITIONS=278} [2023-08-30 10:42:36,817 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 17 predicate places. [2023-08-30 10:42:36,817 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 278 transitions, 2524 flow [2023-08-30 10:42:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 275.6) internal successors, (2756), 10 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:36,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:36,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:36,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:37,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:37,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:37,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -910039044, now seen corresponding path program 1 times [2023-08-30 10:42:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440118546] [2023-08-30 10:42:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:42:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440118546] [2023-08-30 10:42:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440118546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:42:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447833273] [2023-08-30 10:42:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:37,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:37,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:42:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:37,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-30 10:42:37,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:37,943 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-30 10:42:37,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2023-08-30 10:42:38,032 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:42:38,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-30 10:42:38,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:42:38,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:38,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:38,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:42:38,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:42:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447833273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:42:38,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:42:38,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-08-30 10:42:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899968575] [2023-08-30 10:42:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:42:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 10:42:38,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 10:42:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-08-30 10:42:39,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 618 [2023-08-30 10:42:39,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 278 transitions, 2524 flow. Second operand has 10 states, 10 states have (on average 274.6) internal successors, (2746), 10 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:39,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:39,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 618 [2023-08-30 10:42:39,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:42,295 INFO L130 PetriNetUnfolder]: 11348/21048 cut-off events. [2023-08-30 10:42:42,295 INFO L131 PetriNetUnfolder]: For 78189/78215 co-relation queries the response was YES. [2023-08-30 10:42:42,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90662 conditions, 21048 events. 11348/21048 cut-off events. For 78189/78215 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 179676 event pairs, 1933 based on Foata normal form. 108/20560 useless extension candidates. Maximal degree in co-relation 90635. Up to 14382 conditions per place. [2023-08-30 10:42:42,472 INFO L137 encePairwiseOnDemand]: 602/618 looper letters, 349 selfloop transitions, 96 changer transitions 0/454 dead transitions. [2023-08-30 10:42:42,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 454 transitions, 4764 flow [2023-08-30 10:42:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:42:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:42:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2086 transitions. [2023-08-30 10:42:42,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48220064724919093 [2023-08-30 10:42:42,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2086 transitions. [2023-08-30 10:42:42,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2086 transitions. [2023-08-30 10:42:42,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:42,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2086 transitions. [2023-08-30 10:42:42,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:42,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 618.0) internal successors, (4944), 8 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:42,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 618.0) internal successors, (4944), 8 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:42,479 INFO L175 Difference]: Start difference. First operand has 124 places, 278 transitions, 2524 flow. Second operand 7 states and 2086 transitions. [2023-08-30 10:42:42,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 454 transitions, 4764 flow [2023-08-30 10:42:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 454 transitions, 4653 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 10:42:42,621 INFO L231 Difference]: Finished difference. Result has 129 places, 318 transitions, 3200 flow [2023-08-30 10:42:42,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3200, PETRI_PLACES=129, PETRI_TRANSITIONS=318} [2023-08-30 10:42:42,621 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 22 predicate places. [2023-08-30 10:42:42,621 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 318 transitions, 3200 flow [2023-08-30 10:42:42,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 274.6) internal successors, (2746), 10 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:42,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:42,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:42,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:42,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 10:42:42,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:42,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -410111044, now seen corresponding path program 1 times [2023-08-30 10:42:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:42,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856709962] [2023-08-30 10:42:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:42,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:42:43,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856709962] [2023-08-30 10:42:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856709962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:42:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018487313] [2023-08-30 10:42:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:43,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:43,492 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:43,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:42:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:43,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-30 10:42:43,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:43,786 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:42:43,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:42:43,910 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 10:42:43,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2023-08-30 10:42:44,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:42:44,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:44,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:44,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:42:44,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:44,700 INFO L321 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-08-30 10:42:44,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2023-08-30 10:42:44,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:42:44,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:42:45,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:42:45,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-08-30 10:42:45,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-08-30 10:42:45,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-08-30 10:42:45,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-08-30 10:42:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:42:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018487313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:42:45,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:42:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 30 [2023-08-30 10:42:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436799381] [2023-08-30 10:42:45,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:42:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 10:42:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:42:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 10:42:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=827, Unknown=6, NotChecked=0, Total=992 [2023-08-30 10:42:49,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:42:50,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 618 [2023-08-30 10:42:50,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 318 transitions, 3200 flow. Second operand has 32 states, 32 states have (on average 225.71875) internal successors, (7223), 32 states have internal predecessors, (7223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:50,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:42:50,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 618 [2023-08-30 10:42:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:42:55,394 INFO L130 PetriNetUnfolder]: 12108/22550 cut-off events. [2023-08-30 10:42:55,394 INFO L131 PetriNetUnfolder]: For 100835/100847 co-relation queries the response was YES. [2023-08-30 10:42:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103576 conditions, 22550 events. 12108/22550 cut-off events. For 100835/100847 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 194641 event pairs, 4058 based on Foata normal form. 72/22316 useless extension candidates. Maximal degree in co-relation 103549. Up to 16058 conditions per place. [2023-08-30 10:42:55,656 INFO L137 encePairwiseOnDemand]: 600/618 looper letters, 423 selfloop transitions, 126 changer transitions 5/563 dead transitions. [2023-08-30 10:42:55,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 563 transitions, 6324 flow [2023-08-30 10:42:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:42:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:42:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2944 transitions. [2023-08-30 10:42:55,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969795037756203 [2023-08-30 10:42:55,659 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2944 transitions. [2023-08-30 10:42:55,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2944 transitions. [2023-08-30 10:42:55,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:42:55,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2944 transitions. [2023-08-30 10:42:55,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.33333333333334) internal successors, (2944), 12 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:55,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:55,667 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:55,667 INFO L175 Difference]: Start difference. First operand has 129 places, 318 transitions, 3200 flow. Second operand 12 states and 2944 transitions. [2023-08-30 10:42:55,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 563 transitions, 6324 flow [2023-08-30 10:42:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 563 transitions, 6239 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:42:55,859 INFO L231 Difference]: Finished difference. Result has 143 places, 386 transitions, 4510 flow [2023-08-30 10:42:55,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4510, PETRI_PLACES=143, PETRI_TRANSITIONS=386} [2023-08-30 10:42:55,860 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 36 predicate places. [2023-08-30 10:42:55,860 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 386 transitions, 4510 flow [2023-08-30 10:42:55,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 225.71875) internal successors, (7223), 32 states have internal predecessors, (7223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:42:55,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:42:55,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:42:55,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:42:56,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 10:42:56,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:42:56,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:42:56,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1702437952, now seen corresponding path program 2 times [2023-08-30 10:42:56,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:42:56,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020728180] [2023-08-30 10:42:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:42:56,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:42:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:42:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:42:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020728180] [2023-08-30 10:42:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020728180] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:42:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493596293] [2023-08-30 10:42:56,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:42:56,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:42:56,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:42:56,901 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:42:56,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:42:57,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:42:57,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:42:57,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-30 10:42:57,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:42:57,186 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-30 10:42:57,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2023-08-30 10:42:57,301 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-08-30 10:42:57,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-08-30 10:42:57,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:42:57,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:42:57,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 10:42:57,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:57,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:42:57,870 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 10:42:57,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:42:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:42:57,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:42:58,039 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2471 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2471) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-08-30 10:43:04,592 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 10:43:04,619 INFO L321 Elim1Store]: treesize reduction 14, result has 70.8 percent of original size [2023-08-30 10:43:04,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2023-08-30 10:43:04,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:43:04,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 119 [2023-08-30 10:43:04,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 10:43:04,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 10:43:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:43:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493596293] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:43:04,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:43:04,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-08-30 10:43:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771472802] [2023-08-30 10:43:04,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:43:04,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 10:43:04,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 10:43:04,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=824, Unknown=16, NotChecked=60, Total=1056 [2023-08-30 10:43:05,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 618 [2023-08-30 10:43:05,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 386 transitions, 4510 flow. Second operand has 33 states, 33 states have (on average 224.72727272727272) internal successors, (7416), 33 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:05,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:05,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 618 [2023-08-30 10:43:05,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:11,315 INFO L130 PetriNetUnfolder]: 13371/24955 cut-off events. [2023-08-30 10:43:11,315 INFO L131 PetriNetUnfolder]: For 129706/129721 co-relation queries the response was YES. [2023-08-30 10:43:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121018 conditions, 24955 events. 13371/24955 cut-off events. For 129706/129721 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 217858 event pairs, 2148 based on Foata normal form. 103/24736 useless extension candidates. Maximal degree in co-relation 120984. Up to 14538 conditions per place. [2023-08-30 10:43:11,650 INFO L137 encePairwiseOnDemand]: 576/618 looper letters, 462 selfloop transitions, 205 changer transitions 5/681 dead transitions. [2023-08-30 10:43:11,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 681 transitions, 8230 flow [2023-08-30 10:43:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:43:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:43:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3423 transitions. [2023-08-30 10:43:11,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39563106796116504 [2023-08-30 10:43:11,654 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3423 transitions. [2023-08-30 10:43:11,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3423 transitions. [2023-08-30 10:43:11,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:11,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3423 transitions. [2023-08-30 10:43:11,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 244.5) internal successors, (3423), 14 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 618.0) internal successors, (9270), 15 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,663 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 618.0) internal successors, (9270), 15 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:11,663 INFO L175 Difference]: Start difference. First operand has 143 places, 386 transitions, 4510 flow. Second operand 14 states and 3423 transitions. [2023-08-30 10:43:11,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 681 transitions, 8230 flow [2023-08-30 10:43:12,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 681 transitions, 8133 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-08-30 10:43:12,179 INFO L231 Difference]: Finished difference. Result has 164 places, 487 transitions, 6200 flow [2023-08-30 10:43:12,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=4415, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6200, PETRI_PLACES=164, PETRI_TRANSITIONS=487} [2023-08-30 10:43:12,179 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 57 predicate places. [2023-08-30 10:43:12,180 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 487 transitions, 6200 flow [2023-08-30 10:43:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 224.72727272727272) internal successors, (7416), 33 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:12,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:12,180 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:12,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:43:12,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 10:43:12,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:43:12,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2118305669, now seen corresponding path program 1 times [2023-08-30 10:43:12,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:12,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039885775] [2023-08-30 10:43:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:43:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039885775] [2023-08-30 10:43:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039885775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:43:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417316232] [2023-08-30 10:43:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:13,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:13,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:13,136 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:13,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:43:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:13,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-30 10:43:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:13,408 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:43:13,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:43:13,626 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-30 10:43:13,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2023-08-30 10:43:13,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:43:13,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:13,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:14,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:14,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:43:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:43:14,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:43:14,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:43:14,422 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2650 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483648))) is different from false [2023-08-30 10:43:14,447 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2650 (Array Int Int)) (v_ArrVal_2649 Int)) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset| v_ArrVal_2649)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|))) (< v_ArrVal_2649 (+ 1 |c_t_funThread1of2ForFork0_#t~post38#1|)))) is different from false [2023-08-30 10:43:14,460 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2650 (Array Int Int)) (v_ArrVal_2649 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base|))) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base| (store .cse0 |c_t_funThread1of2ForFork0_~p~0#1.offset| v_ArrVal_2649)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|))) (< v_ArrVal_2649 (+ (select .cse0 |c_t_funThread1of2ForFork0_~p~0#1.offset|) 1))))) is different from false [2023-08-30 10:43:14,522 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2647 (Array Int Int)) (v_ArrVal_2650 (Array Int Int)) (v_ArrVal_2649 Int)) (let ((.cse1 (store |c_#memory_int| |c_t_funThread1of2ForFork0_insert_~list#1.base| v_ArrVal_2647))) (let ((.cse0 (select .cse1 |c_t_funThread1of2ForFork0_~p~0#1.base|))) (or (< v_ArrVal_2649 (+ (select .cse0 |c_t_funThread1of2ForFork0_~p~0#1.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_t_funThread1of2ForFork0_~p~0#1.base| (store .cse0 |c_t_funThread1of2ForFork0_~p~0#1.offset| v_ArrVal_2649)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483648)))))) is different from false [2023-08-30 10:43:14,749 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2647 (Array Int Int)) (v_ArrVal_2650 (Array Int Int)) (v_ArrVal_2646 Int) (v_ArrVal_2649 Int)) (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_~p~0#1.base|) (+ 4 |c_t_funThread1of2ForFork0_~p~0#1.offset|) v_ArrVal_2646)) |c_~#A~0.base| v_ArrVal_2647))) (let ((.cse1 (select .cse0 |c_t_funThread1of2ForFork0_~p~0#1.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_t_funThread1of2ForFork0_~p~0#1.base| (store .cse1 |c_t_funThread1of2ForFork0_~p~0#1.offset| v_ArrVal_2649)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483648)) (< v_ArrVal_2649 (+ (select .cse1 |c_t_funThread1of2ForFork0_~p~0#1.offset|) 1)))))) is different from false [2023-08-30 10:43:14,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:43:14,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 57 [2023-08-30 10:43:14,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 78 [2023-08-30 10:43:14,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-08-30 10:43:14,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 10:43:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:43:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417316232] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:43:17,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:43:17,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-30 10:43:17,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44209159] [2023-08-30 10:43:17,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:43:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 10:43:17,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 10:43:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=759, Unknown=7, NotChecked=300, Total=1190 [2023-08-30 10:43:17,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 618 [2023-08-30 10:43:17,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 487 transitions, 6200 flow. Second operand has 35 states, 35 states have (on average 221.71428571428572) internal successors, (7760), 35 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:17,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:17,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 618 [2023-08-30 10:43:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:23,116 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2647 (Array Int Int)) (v_ArrVal_2650 (Array Int Int)) (v_ArrVal_2646 Int) (v_ArrVal_2649 Int)) (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_insert_~p#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_insert_~p#1.base|) (+ |c_t_funThread1of2ForFork0_insert_~p#1.offset| 4) v_ArrVal_2646)) |c_t_funThread1of2ForFork0_insert_~list#1.base| v_ArrVal_2647))) (let ((.cse1 (select .cse0 |c_t_funThread1of2ForFork0_~p~0#1.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_t_funThread1of2ForFork0_~p~0#1.base| (store .cse1 |c_t_funThread1of2ForFork0_~p~0#1.offset| v_ArrVal_2649)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_2650) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483648)) (< v_ArrVal_2649 (+ (select .cse1 |c_t_funThread1of2ForFork0_~p~0#1.offset|) 1)))))) (not (= |c_ULTIMATE.start_main_~#t_ids~0#1.base| 4)) (not (= |c_ULTIMATE.start_main_~#t_ids~0#1.base| |c_t_funThread1of2ForFork0_~p~0#1.base|)) (= (select |c_#valid| 4) 1) (<= (+ 2 |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (= |c_~#A~0.base| 4) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (not (= 4 |c_t_funThread1of2ForFork0_~p~0#1.base|)) (= |c_t_funThread1of2ForFork0_~p~0#1.offset| 0)) is different from false [2023-08-30 10:43:32,409 INFO L130 PetriNetUnfolder]: 17921/34225 cut-off events. [2023-08-30 10:43:32,409 INFO L131 PetriNetUnfolder]: For 245139/245148 co-relation queries the response was YES. [2023-08-30 10:43:32,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185343 conditions, 34225 events. 17921/34225 cut-off events. For 245139/245148 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 318359 event pairs, 3607 based on Foata normal form. 273/34133 useless extension candidates. Maximal degree in co-relation 185300. Up to 17121 conditions per place. [2023-08-30 10:43:32,811 INFO L137 encePairwiseOnDemand]: 587/618 looper letters, 853 selfloop transitions, 351 changer transitions 23/1236 dead transitions. [2023-08-30 10:43:32,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 1236 transitions, 15775 flow [2023-08-30 10:43:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-30 10:43:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-30 10:43:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 7010 transitions. [2023-08-30 10:43:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39113938176542795 [2023-08-30 10:43:32,823 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 7010 transitions. [2023-08-30 10:43:32,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 7010 transitions. [2023-08-30 10:43:32,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:32,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 7010 transitions. [2023-08-30 10:43:32,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 241.72413793103448) internal successors, (7010), 29 states have internal predecessors, (7010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:32,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 618.0) internal successors, (18540), 30 states have internal predecessors, (18540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:32,846 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 618.0) internal successors, (18540), 30 states have internal predecessors, (18540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:32,846 INFO L175 Difference]: Start difference. First operand has 164 places, 487 transitions, 6200 flow. Second operand 29 states and 7010 transitions. [2023-08-30 10:43:32,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 1236 transitions, 15775 flow [2023-08-30 10:43:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1236 transitions, 15502 flow, removed 106 selfloop flow, removed 4 redundant places. [2023-08-30 10:43:33,887 INFO L231 Difference]: Finished difference. Result has 202 places, 674 transitions, 9300 flow [2023-08-30 10:43:33,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9300, PETRI_PLACES=202, PETRI_TRANSITIONS=674} [2023-08-30 10:43:33,888 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 95 predicate places. [2023-08-30 10:43:33,888 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 674 transitions, 9300 flow [2023-08-30 10:43:33,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 221.71428571428572) internal successors, (7760), 35 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:33,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:33,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:33,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:43:34,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 10:43:34,090 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:43:34,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1295260896, now seen corresponding path program 1 times [2023-08-30 10:43:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:34,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831274071] [2023-08-30 10:43:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:34,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:43:34,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831274071] [2023-08-30 10:43:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831274071] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:43:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982450888] [2023-08-30 10:43:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:34,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:43:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:35,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-30 10:43:35,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:35,164 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:43:35,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:43:35,337 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2023-08-30 10:43:35,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 43 [2023-08-30 10:43:35,431 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-30 10:43:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 30 [2023-08-30 10:43:35,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:43:35,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:35,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:35,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:35,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:43:35,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:43:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982450888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:43:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:43:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 21 [2023-08-30 10:43:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674252716] [2023-08-30 10:43:35,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:43:35,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:43:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:43:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:43:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-08-30 10:43:36,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 618 [2023-08-30 10:43:36,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 674 transitions, 9300 flow. Second operand has 12 states, 12 states have (on average 273.5) internal successors, (3282), 12 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:36,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:43:36,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 618 [2023-08-30 10:43:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:43:50,985 INFO L130 PetriNetUnfolder]: 33397/64566 cut-off events. [2023-08-30 10:43:50,985 INFO L131 PetriNetUnfolder]: For 675864/675934 co-relation queries the response was YES. [2023-08-30 10:43:51,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394458 conditions, 64566 events. 33397/64566 cut-off events. For 675864/675934 co-relation queries the response was YES. Maximal size of possible extension queue 2248. Compared 666518 event pairs, 10085 based on Foata normal form. 54/63896 useless extension candidates. Maximal degree in co-relation 394401. Up to 30816 conditions per place. [2023-08-30 10:43:52,297 INFO L137 encePairwiseOnDemand]: 602/618 looper letters, 1255 selfloop transitions, 148 changer transitions 5/1417 dead transitions. [2023-08-30 10:43:52,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1417 transitions, 21746 flow [2023-08-30 10:43:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:43:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:43:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2699 transitions. [2023-08-30 10:43:52,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48525710176195613 [2023-08-30 10:43:52,301 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2699 transitions. [2023-08-30 10:43:52,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2699 transitions. [2023-08-30 10:43:52,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:43:52,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2699 transitions. [2023-08-30 10:43:52,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 299.8888888888889) internal successors, (2699), 9 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:52,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 618.0) internal successors, (6180), 10 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 618.0) internal successors, (6180), 10 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:52,308 INFO L175 Difference]: Start difference. First operand has 202 places, 674 transitions, 9300 flow. Second operand 9 states and 2699 transitions. [2023-08-30 10:43:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1417 transitions, 21746 flow [2023-08-30 10:43:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1417 transitions, 21142 flow, removed 224 selfloop flow, removed 5 redundant places. [2023-08-30 10:43:56,293 INFO L231 Difference]: Finished difference. Result has 211 places, 816 transitions, 12138 flow [2023-08-30 10:43:56,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=8992, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12138, PETRI_PLACES=211, PETRI_TRANSITIONS=816} [2023-08-30 10:43:56,294 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 104 predicate places. [2023-08-30 10:43:56,294 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 816 transitions, 12138 flow [2023-08-30 10:43:56,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.5) internal successors, (3282), 12 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:43:56,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:43:56,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:43:56,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:43:56,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:56,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:43:56,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:43:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash 168355916, now seen corresponding path program 3 times [2023-08-30 10:43:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:43:56,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848881492] [2023-08-30 10:43:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:43:56,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:43:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:43:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:43:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:43:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848881492] [2023-08-30 10:43:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848881492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:43:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74301726] [2023-08-30 10:43:57,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:43:57,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:43:57,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:43:57,089 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:43:57,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:43:57,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 10:43:57,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:43:57,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-30 10:43:57,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:43:57,357 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:43:57,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:43:57,499 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2023-08-30 10:43:57,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 46 [2023-08-30 10:43:57,656 INFO L321 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2023-08-30 10:43:57,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 58 [2023-08-30 10:43:57,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:43:57,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:58,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:43:58,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:58,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:43:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:43:58,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:43:58,223 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2994 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_t_funThread1of2ForFork0_insert_~list#1.base| v_ArrVal_2994) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-08-30 10:44:00,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:44:00,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-08-30 10:44:00,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2023-08-30 10:44:00,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 10:44:00,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 10:44:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:44:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74301726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:44:00,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:44:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-08-30 10:44:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415147004] [2023-08-30 10:44:00,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:44:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 10:44:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:44:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 10:44:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=839, Unknown=19, NotChecked=60, Total=1056 [2023-08-30 10:44:00,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 618 [2023-08-30 10:44:00,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 816 transitions, 12138 flow. Second operand has 33 states, 33 states have (on average 225.66666666666666) internal successors, (7447), 33 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:00,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:44:00,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 618 [2023-08-30 10:44:00,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:44:18,036 INFO L130 PetriNetUnfolder]: 33261/64040 cut-off events. [2023-08-30 10:44:18,036 INFO L131 PetriNetUnfolder]: For 721799/721850 co-relation queries the response was YES. [2023-08-30 10:44:18,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399663 conditions, 64040 events. 33261/64040 cut-off events. For 721799/721850 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 661530 event pairs, 8963 based on Foata normal form. 75/63390 useless extension candidates. Maximal degree in co-relation 399599. Up to 30502 conditions per place. [2023-08-30 10:44:19,228 INFO L137 encePairwiseOnDemand]: 599/618 looper letters, 1308 selfloop transitions, 188 changer transitions 10/1515 dead transitions. [2023-08-30 10:44:19,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1515 transitions, 23545 flow [2023-08-30 10:44:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:44:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:44:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3013 transitions. [2023-08-30 10:44:19,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40628371089536136 [2023-08-30 10:44:19,231 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3013 transitions. [2023-08-30 10:44:19,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3013 transitions. [2023-08-30 10:44:19,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:44:19,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3013 transitions. [2023-08-30 10:44:19,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 251.08333333333334) internal successors, (3013), 12 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:19,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:19,240 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 618.0) internal successors, (8034), 13 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:19,241 INFO L175 Difference]: Start difference. First operand has 211 places, 816 transitions, 12138 flow. Second operand 12 states and 3013 transitions. [2023-08-30 10:44:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1515 transitions, 23545 flow [2023-08-30 10:44:23,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1515 transitions, 23494 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-30 10:44:23,931 INFO L231 Difference]: Finished difference. Result has 226 places, 908 transitions, 14349 flow [2023-08-30 10:44:23,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=12062, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14349, PETRI_PLACES=226, PETRI_TRANSITIONS=908} [2023-08-30 10:44:23,933 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 119 predicate places. [2023-08-30 10:44:23,933 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 908 transitions, 14349 flow [2023-08-30 10:44:23,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 225.66666666666666) internal successors, (7447), 33 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:23,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:44:23,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:44:23,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:44:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:44:24,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:44:24,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:44:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1295260802, now seen corresponding path program 4 times [2023-08-30 10:44:24,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:44:24,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773007570] [2023-08-30 10:44:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:44:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:44:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:44:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:44:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:44:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773007570] [2023-08-30 10:44:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773007570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:44:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335121058] [2023-08-30 10:44:24,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 10:44:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:44:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:44:24,714 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:44:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:44:25,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 10:44:25,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:44:25,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 68 conjunts are in the unsatisfiable core [2023-08-30 10:44:25,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:44:25,042 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:44:25,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:44:25,242 INFO L321 Elim1Store]: treesize reduction 28, result has 55.6 percent of original size [2023-08-30 10:44:25,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 54 [2023-08-30 10:44:25,448 INFO L321 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2023-08-30 10:44:25,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2023-08-30 10:44:25,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:44:25,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:44:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:44:26,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 10:44:26,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:44:26,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:44:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:44:26,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:44:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335121058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:44:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:44:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 22 [2023-08-30 10:44:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52647991] [2023-08-30 10:44:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:44:26,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:44:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:44:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:44:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-08-30 10:44:27,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 618 [2023-08-30 10:44:27,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 908 transitions, 14349 flow. Second operand has 13 states, 13 states have (on average 272.38461538461536) internal successors, (3541), 13 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:27,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:44:27,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 618 [2023-08-30 10:44:27,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:44:44,885 INFO L130 PetriNetUnfolder]: 33157/64188 cut-off events. [2023-08-30 10:44:44,885 INFO L131 PetriNetUnfolder]: For 788081/788135 co-relation queries the response was YES. [2023-08-30 10:44:45,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407120 conditions, 64188 events. 33157/64188 cut-off events. For 788081/788135 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 665209 event pairs, 9604 based on Foata normal form. 24/63487 useless extension candidates. Maximal degree in co-relation 407050. Up to 30488 conditions per place. [2023-08-30 10:44:46,152 INFO L137 encePairwiseOnDemand]: 602/618 looper letters, 1315 selfloop transitions, 127 changer transitions 5/1456 dead transitions. [2023-08-30 10:44:46,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 1456 transitions, 23507 flow [2023-08-30 10:44:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:44:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:44:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2689 transitions. [2023-08-30 10:44:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834591873426825 [2023-08-30 10:44:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2689 transitions. [2023-08-30 10:44:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2689 transitions. [2023-08-30 10:44:46,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:44:46,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2689 transitions. [2023-08-30 10:44:46,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 298.77777777777777) internal successors, (2689), 9 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:46,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 618.0) internal successors, (6180), 10 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:46,162 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 618.0) internal successors, (6180), 10 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:46,162 INFO L175 Difference]: Start difference. First operand has 226 places, 908 transitions, 14349 flow. Second operand 9 states and 2689 transitions. [2023-08-30 10:44:46,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 1456 transitions, 23507 flow [2023-08-30 10:44:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 1456 transitions, 23229 flow, removed 137 selfloop flow, removed 2 redundant places. [2023-08-30 10:44:51,082 INFO L231 Difference]: Finished difference. Result has 234 places, 906 transitions, 14406 flow [2023-08-30 10:44:51,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14406, PETRI_PLACES=234, PETRI_TRANSITIONS=906} [2023-08-30 10:44:51,083 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 127 predicate places. [2023-08-30 10:44:51,083 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 906 transitions, 14406 flow [2023-08-30 10:44:51,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 272.38461538461536) internal successors, (3541), 13 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:51,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:44:51,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:44:51,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 10:44:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 10:44:51,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:44:51,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:44:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2118305670, now seen corresponding path program 1 times [2023-08-30 10:44:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:44:51,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115510420] [2023-08-30 10:44:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:44:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:44:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:44:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:44:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:44:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115510420] [2023-08-30 10:44:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115510420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:44:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232181944] [2023-08-30 10:44:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:44:51,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:44:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:44:51,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:44:51,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:44:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:44:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 10:44:51,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:44:51,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:44:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:44:51,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:44:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:44:51,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:44:51,735 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3334 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_3334) |c_t_funThread1of2ForFork0_~p~0#1.base|) |c_t_funThread1of2ForFork0_~p~0#1.offset|) 2147483649)) is different from false [2023-08-30 10:44:51,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:44:51,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:44:51,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-30 10:44:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:44:51,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232181944] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:44:51,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:44:51,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 10:44:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299071160] [2023-08-30 10:44:51,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:44:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:44:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:44:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:44:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2023-08-30 10:44:51,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 618 [2023-08-30 10:44:51,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 906 transitions, 14406 flow. Second operand has 11 states, 11 states have (on average 249.0909090909091) internal successors, (2740), 11 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:44:51,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:44:51,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 618 [2023-08-30 10:44:51,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:45:09,111 INFO L130 PetriNetUnfolder]: 33187/64292 cut-off events. [2023-08-30 10:45:09,112 INFO L131 PetriNetUnfolder]: For 806129/806173 co-relation queries the response was YES. [2023-08-30 10:45:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411298 conditions, 64292 events. 33187/64292 cut-off events. For 806129/806173 co-relation queries the response was YES. Maximal size of possible extension queue 2283. Compared 669682 event pairs, 7085 based on Foata normal form. 310/63875 useless extension candidates. Maximal degree in co-relation 411226. Up to 32883 conditions per place. [2023-08-30 10:45:10,699 INFO L137 encePairwiseOnDemand]: 604/618 looper letters, 716 selfloop transitions, 220 changer transitions 16/961 dead transitions. [2023-08-30 10:45:10,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 961 transitions, 16794 flow [2023-08-30 10:45:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:45:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:45:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1349 transitions. [2023-08-30 10:45:10,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43656957928802587 [2023-08-30 10:45:10,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1349 transitions. [2023-08-30 10:45:10,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1349 transitions. [2023-08-30 10:45:10,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:45:10,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1349 transitions. [2023-08-30 10:45:10,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.8) internal successors, (1349), 5 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:45:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:45:10,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 618.0) internal successors, (3708), 6 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:45:10,705 INFO L175 Difference]: Start difference. First operand has 234 places, 906 transitions, 14406 flow. Second operand 5 states and 1349 transitions. [2023-08-30 10:45:10,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 961 transitions, 16794 flow [2023-08-30 10:45:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 961 transitions, 16381 flow, removed 49 selfloop flow, removed 7 redundant places. [2023-08-30 10:45:16,202 INFO L231 Difference]: Finished difference. Result has 233 places, 885 transitions, 14661 flow [2023-08-30 10:45:16,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=618, PETRI_DIFFERENCE_MINUEND_FLOW=13524, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14661, PETRI_PLACES=233, PETRI_TRANSITIONS=885} [2023-08-30 10:45:16,203 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 126 predicate places. [2023-08-30 10:45:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 885 transitions, 14661 flow [2023-08-30 10:45:16,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 249.0909090909091) internal successors, (2740), 11 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:45:16,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:45:16,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:45:16,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-30 10:45:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 10:45:16,405 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:45:16,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:45:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1768769856, now seen corresponding path program 1 times [2023-08-30 10:45:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:45:16,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998221473] [2023-08-30 10:45:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:45:16,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:45:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:45:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:45:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:45:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998221473] [2023-08-30 10:45:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998221473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:45:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783994881] [2023-08-30 10:45:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:45:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:45:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:45:17,161 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:45:17,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:45:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:45:17,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-30 10:45:17,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:45:17,465 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2023-08-30 10:45:17,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2023-08-30 10:45:17,542 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 10:45:17,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 30 [2023-08-30 10:45:17,636 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-30 10:45:17,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2023-08-30 10:45:17,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 10:45:17,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:45:17,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:45:17,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 10:45:17,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 10:45:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:45:18,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:45:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783994881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:45:18,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:45:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-08-30 10:45:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597263656] [2023-08-30 10:45:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:45:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:45:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:45:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:45:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-08-30 10:45:19,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 618 [2023-08-30 10:45:19,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 885 transitions, 14661 flow. Second operand has 13 states, 13 states have (on average 271.46153846153845) internal successors, (3529), 13 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:45:19,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:45:19,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 618 [2023-08-30 10:45:19,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand