./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:50:10,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:50:10,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:50:10,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:50:10,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:50:10,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:50:10,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:50:10,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:50:10,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:50:10,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:50:10,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:50:10,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:50:10,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:50:10,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:50:10,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:50:10,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:50:10,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:50:10,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:50:10,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:50:10,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:50:10,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:50:10,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:50:10,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:50:10,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:50:10,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:50:10,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:50:10,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:50:10,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:50:10,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:50:10,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:50:10,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:50:10,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:50:10,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:50:10,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:50:10,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:50:10,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:50:10,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:50:10,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:50:10,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:50:10,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:50:10,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:50:10,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:50:10,875 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:50:10,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:50:10,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:50:10,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:50:10,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:50:10,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:50:10,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:50:10,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:50:10,879 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:50:10,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:50:10,880 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:50:10,880 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:50:10,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:50:10,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:50:10,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:50:10,881 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:50:10,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:50:10,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:50:10,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:50:10,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:50:10,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:50:10,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:50:10,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:50:10,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:50:10,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:50:10,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:50:10,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:50:10,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:50:10,884 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:50:10,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:50:10,884 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:50:10,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:50:11,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:50:11,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:50:11,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:50:11,183 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:50:11,184 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:50:11,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 11:50:12,198 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:50:12,347 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:50:12,347 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 11:50:12,370 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e483ed1d9/e1736f10bff84591bfb446c30abc3d19/FLAG053aa3d3e [2023-08-30 11:50:12,385 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e483ed1d9/e1736f10bff84591bfb446c30abc3d19 [2023-08-30 11:50:12,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:50:12,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:50:12,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:50:12,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:50:12,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:50:12,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34143f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12, skipping insertion in model container [2023-08-30 11:50:12,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:50:12,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:50:12,607 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 11:50:12,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:50:12,625 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:50:12,648 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 11:50:12,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:50:12,663 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:50:12,663 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:50:12,667 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:50:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12 WrapperNode [2023-08-30 11:50:12,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:50:12,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:50:12,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:50:12,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:50:12,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,706 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 434 [2023-08-30 11:50:12,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:50:12,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:50:12,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:50:12,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:50:12,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,748 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:50:12,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:50:12,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:50:12,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:50:12,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (1/1) ... [2023-08-30 11:50:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:50:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:12,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:50:12,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:50:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:50:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 11:50:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:50:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:50:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:50:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:50:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:50:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:50:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:50:12,836 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:50:12,944 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:50:12,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:50:13,337 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:50:13,500 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:50:13,500 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 11:50:13,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:50:13 BoogieIcfgContainer [2023-08-30 11:50:13,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:50:13,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:50:13,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:50:13,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:50:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:50:12" (1/3) ... [2023-08-30 11:50:13,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9b888a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:50:13, skipping insertion in model container [2023-08-30 11:50:13,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:50:12" (2/3) ... [2023-08-30 11:50:13,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9b888a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:50:13, skipping insertion in model container [2023-08-30 11:50:13,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:50:13" (3/3) ... [2023-08-30 11:50:13,509 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-08-30 11:50:13,514 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:50:13,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:50:13,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-08-30 11:50:13,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:50:13,604 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:50:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 421 transitions, 866 flow [2023-08-30 11:50:13,781 INFO L130 PetriNetUnfolder]: 37/418 cut-off events. [2023-08-30 11:50:13,782 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:50:13,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 418 events. 37/418 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-08-30 11:50:13,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 421 transitions, 866 flow [2023-08-30 11:50:13,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 400 transitions, 815 flow [2023-08-30 11:50:13,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:50:13,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 400 transitions, 815 flow [2023-08-30 11:50:13,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 400 transitions, 815 flow [2023-08-30 11:50:13,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 400 transitions, 815 flow [2023-08-30 11:50:13,886 INFO L130 PetriNetUnfolder]: 36/400 cut-off events. [2023-08-30 11:50:13,886 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:50:13,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 400 events. 36/400 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 543 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-08-30 11:50:13,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 6514 [2023-08-30 11:50:26,010 INFO L134 LiptonReduction]: Checked pairs total: 8096 [2023-08-30 11:50:26,011 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-08-30 11:50:26,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:50:26,033 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;@3c64a0b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:50:26,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-30 11:50:26,036 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:50:26,036 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:50:26,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:26,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:50:26,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:26,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 58938, now seen corresponding path program 1 times [2023-08-30 11:50:26,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:26,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928551116] [2023-08-30 11:50:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:26,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:26,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928551116] [2023-08-30 11:50:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928551116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:26,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:26,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:50:26,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620323247] [2023-08-30 11:50:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:50:26,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 11:50:26,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:26,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 11:50:26,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:26,814 INFO L130 PetriNetUnfolder]: 1165/1771 cut-off events. [2023-08-30 11:50:26,815 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 11:50:26,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 1771 events. 1165/1771 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9396 event pairs, 890 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1680. Up to 875 conditions per place. [2023-08-30 11:50:26,824 INFO L137 encePairwiseOnDemand]: 862/884 looper letters, 77 selfloop transitions, 8 changer transitions 4/91 dead transitions. [2023-08-30 11:50:26,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 390 flow [2023-08-30 11:50:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1192 transitions. [2023-08-30 11:50:26,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494720965309201 [2023-08-30 11:50:26,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1192 transitions. [2023-08-30 11:50:26,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1192 transitions. [2023-08-30 11:50:26,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:26,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1192 transitions. [2023-08-30 11:50:26,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,881 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 3 states and 1192 transitions. [2023-08-30 11:50:26,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 390 flow [2023-08-30 11:50:26,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:50:26,890 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 179 flow [2023-08-30 11:50:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-08-30 11:50:26,893 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-08-30 11:50:26,893 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 179 flow [2023-08-30 11:50:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:26,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:50:26,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:50:26,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:26,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1829658, now seen corresponding path program 1 times [2023-08-30 11:50:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:26,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573629220] [2023-08-30 11:50:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573629220] [2023-08-30 11:50:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573629220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:26,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:50:26,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001424269] [2023-08-30 11:50:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:26,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:50:26,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 11:50:26,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:26,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:26,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 11:50:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:27,182 INFO L130 PetriNetUnfolder]: 1157/1751 cut-off events. [2023-08-30 11:50:27,182 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 11:50:27,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1751 events. 1157/1751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9374 event pairs, 886 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1814. Up to 1719 conditions per place. [2023-08-30 11:50:27,188 INFO L137 encePairwiseOnDemand]: 879/884 looper letters, 49 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 11:50:27,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 263 flow [2023-08-30 11:50:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1130 transitions. [2023-08-30 11:50:27,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42609351432880843 [2023-08-30 11:50:27,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1130 transitions. [2023-08-30 11:50:27,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1130 transitions. [2023-08-30 11:50:27,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:27,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1130 transitions. [2023-08-30 11:50:27,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:27,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:27,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:27,199 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 179 flow. Second operand 3 states and 1130 transitions. [2023-08-30 11:50:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 263 flow [2023-08-30 11:50:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:50:27,200 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 149 flow [2023-08-30 11:50:27,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2023-08-30 11:50:27,201 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2023-08-30 11:50:27,201 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 149 flow [2023-08-30 11:50:27,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:27,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:27,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:50:27,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:50:27,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:27,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1829685, now seen corresponding path program 1 times [2023-08-30 11:50:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786544737] [2023-08-30 11:50:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786544737] [2023-08-30 11:50:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786544737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825794536] [2023-08-30 11:50:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:27,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:27,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:50:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:50:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:27,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:50:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:27,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:50:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825794536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:50:27,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:50:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:50:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275297013] [2023-08-30 11:50:27,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:50:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:50:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:50:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:50:27,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 11:50:27,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:27,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:27,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 11:50:27,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:28,154 INFO L130 PetriNetUnfolder]: 2891/4370 cut-off events. [2023-08-30 11:50:28,154 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 11:50:28,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 4370 events. 2891/4370 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 26309 event pairs, 2215 based on Foata normal form. 0/2301 useless extension candidates. Maximal degree in co-relation 9142. Up to 866 conditions per place. [2023-08-30 11:50:28,172 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2023-08-30 11:50:28,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 197 transitions, 891 flow [2023-08-30 11:50:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:50:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:50:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2373 transitions. [2023-08-30 11:50:28,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473981900452489 [2023-08-30 11:50:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2373 transitions. [2023-08-30 11:50:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2373 transitions. [2023-08-30 11:50:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:28,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2373 transitions. [2023-08-30 11:50:28,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 395.5) internal successors, (2373), 6 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:28,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:28,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:28,192 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 149 flow. Second operand 6 states and 2373 transitions. [2023-08-30 11:50:28,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 197 transitions, 891 flow [2023-08-30 11:50:28,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 197 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:50:28,197 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 355 flow [2023-08-30 11:50:28,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2023-08-30 11:50:28,198 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-08-30 11:50:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 355 flow [2023-08-30 11:50:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:28,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:28,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:50:28,217 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 11:50:28,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:28,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:28,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1760469380, now seen corresponding path program 1 times [2023-08-30 11:50:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706390860] [2023-08-30 11:50:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706390860] [2023-08-30 11:50:28,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706390860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:28,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:28,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:50:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58447289] [2023-08-30 11:50:28,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:28,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:50:28,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 11:50:28,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:28,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:28,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 11:50:28,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:29,471 INFO L130 PetriNetUnfolder]: 5766/8696 cut-off events. [2023-08-30 11:50:29,472 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 11:50:29,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 8696 events. 5766/8696 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 58640 event pairs, 4430 based on Foata normal form. 0/4592 useless extension candidates. Maximal degree in co-relation 18253. Up to 4291 conditions per place. [2023-08-30 11:50:29,512 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 108 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-30 11:50:29,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 713 flow [2023-08-30 11:50:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1186 transitions. [2023-08-30 11:50:29,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44720965309200605 [2023-08-30 11:50:29,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1186 transitions. [2023-08-30 11:50:29,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1186 transitions. [2023-08-30 11:50:29,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:29,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1186 transitions. [2023-08-30 11:50:29,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:29,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:29,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:29,523 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 355 flow. Second operand 3 states and 1186 transitions. [2023-08-30 11:50:29,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 713 flow [2023-08-30 11:50:29,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 661 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-30 11:50:29,526 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 328 flow [2023-08-30 11:50:29,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-08-30 11:50:29,528 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-08-30 11:50:29,528 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 328 flow [2023-08-30 11:50:29,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:29,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:29,529 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:50:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:50:29,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:29,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1324671403, now seen corresponding path program 2 times [2023-08-30 11:50:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006853460] [2023-08-30 11:50:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006853460] [2023-08-30 11:50:29,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006853460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44334078] [2023-08-30 11:50:29,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:50:29,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:29,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:50:29,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:50:29,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:50:29,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:50:29,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:50:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:50:29,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:50:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44334078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:29,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:50:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:50:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509668889] [2023-08-30 11:50:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:29,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:50:29,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 884 [2023-08-30 11:50:29,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:29,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:29,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 884 [2023-08-30 11:50:29,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:30,545 INFO L130 PetriNetUnfolder]: 5766/8695 cut-off events. [2023-08-30 11:50:30,546 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 11:50:30,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18259 conditions, 8695 events. 5766/8695 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 58564 event pairs, 4430 based on Foata normal form. 1/4604 useless extension candidates. Maximal degree in co-relation 18246. Up to 8530 conditions per place. [2023-08-30 11:50:30,569 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 11:50:30,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 460 flow [2023-08-30 11:50:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1138 transitions. [2023-08-30 11:50:30,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291101055806938 [2023-08-30 11:50:30,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1138 transitions. [2023-08-30 11:50:30,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1138 transitions. [2023-08-30 11:50:30,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:30,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1138 transitions. [2023-08-30 11:50:30,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:30,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:30,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:30,579 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 328 flow. Second operand 3 states and 1138 transitions. [2023-08-30 11:50:30,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 460 flow [2023-08-30 11:50:30,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:50:30,581 INFO L231 Difference]: Finished difference. Result has 54 places, 73 transitions, 328 flow [2023-08-30 11:50:30,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2023-08-30 11:50:30,582 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-08-30 11:50:30,582 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions, 328 flow [2023-08-30 11:50:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:30,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:30,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:50:30,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:50:30,788 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 11:50:30,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:30,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:30,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1260018834, now seen corresponding path program 1 times [2023-08-30 11:50:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:30,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269689112] [2023-08-30 11:50:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:30,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269689112] [2023-08-30 11:50:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269689112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:30,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 11:50:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241129471] [2023-08-30 11:50:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:30,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:50:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:50:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:50:31,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 884 [2023-08-30 11:50:31,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:31,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:31,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 884 [2023-08-30 11:50:31,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:32,301 INFO L130 PetriNetUnfolder]: 8191/12577 cut-off events. [2023-08-30 11:50:32,301 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-30 11:50:32,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26430 conditions, 12577 events. 8191/12577 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 92111 event pairs, 6645 based on Foata normal form. 5/6901 useless extension candidates. Maximal degree in co-relation 26416. Up to 8530 conditions per place. [2023-08-30 11:50:32,358 INFO L137 encePairwiseOnDemand]: 878/884 looper letters, 107 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-08-30 11:50:32,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 117 transitions, 724 flow [2023-08-30 11:50:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:50:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:50:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1833 transitions. [2023-08-30 11:50:32,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2023-08-30 11:50:32,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1833 transitions. [2023-08-30 11:50:32,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1833 transitions. [2023-08-30 11:50:32,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:32,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1833 transitions. [2023-08-30 11:50:32,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 366.6) internal successors, (1833), 5 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:32,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:32,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:32,371 INFO L175 Difference]: Start difference. First operand has 54 places, 73 transitions, 328 flow. Second operand 5 states and 1833 transitions. [2023-08-30 11:50:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 117 transitions, 724 flow [2023-08-30 11:50:32,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 117 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:50:32,373 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 345 flow [2023-08-30 11:50:32,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2023-08-30 11:50:32,374 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-08-30 11:50:32,374 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 345 flow [2023-08-30 11:50:32,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:32,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:32,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:50:32,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:50:32,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:32,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -449464877, now seen corresponding path program 1 times [2023-08-30 11:50:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955379290] [2023-08-30 11:50:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:50:32,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955379290] [2023-08-30 11:50:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955379290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080220886] [2023-08-30 11:50:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:32,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:32,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:32,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:50:32,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:50:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:32,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:50:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:50:32,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:50:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080220886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:32,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:50:32,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:50:32,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868829722] [2023-08-30 11:50:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:32,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:50:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:50:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:50:32,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 11:50:32,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:32,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:32,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 11:50:32,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:33,604 INFO L130 PetriNetUnfolder]: 8191/12572 cut-off events. [2023-08-30 11:50:33,604 INFO L131 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2023-08-30 11:50:33,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27338 conditions, 12572 events. 8191/12572 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 91253 event pairs, 6645 based on Foata normal form. 0/7796 useless extension candidates. Maximal degree in co-relation 27323. Up to 8042 conditions per place. [2023-08-30 11:50:33,646 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 106 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-30 11:50:33,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 686 flow [2023-08-30 11:50:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:50:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:50:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1553 transitions. [2023-08-30 11:50:33,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391968325791855 [2023-08-30 11:50:33,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1553 transitions. [2023-08-30 11:50:33,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1553 transitions. [2023-08-30 11:50:33,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:33,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1553 transitions. [2023-08-30 11:50:33,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 388.25) internal successors, (1553), 4 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:33,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:33,665 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:33,665 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 345 flow. Second operand 4 states and 1553 transitions. [2023-08-30 11:50:33,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 686 flow [2023-08-30 11:50:33,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 676 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:50:33,668 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 337 flow [2023-08-30 11:50:33,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-08-30 11:50:33,669 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 11:50:33,669 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 337 flow [2023-08-30 11:50:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:33,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:33,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:50:33,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:50:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:33,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:33,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -405848169, now seen corresponding path program 1 times [2023-08-30 11:50:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379752307] [2023-08-30 11:50:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379752307] [2023-08-30 11:50:33,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379752307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:33,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:33,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:50:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902515617] [2023-08-30 11:50:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:50:33,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 11:50:33,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:33,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:33,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 11:50:33,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:36,035 INFO L130 PetriNetUnfolder]: 16351/25040 cut-off events. [2023-08-30 11:50:36,035 INFO L131 PetriNetUnfolder]: For 1245/1245 co-relation queries the response was YES. [2023-08-30 11:50:36,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54347 conditions, 25040 events. 16351/25040 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 197566 event pairs, 13290 based on Foata normal form. 0/15523 useless extension candidates. Maximal degree in co-relation 54332. Up to 12333 conditions per place. [2023-08-30 11:50:36,131 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 104 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-08-30 11:50:36,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 670 flow [2023-08-30 11:50:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1180 transitions. [2023-08-30 11:50:36,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444947209653092 [2023-08-30 11:50:36,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1180 transitions. [2023-08-30 11:50:36,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1180 transitions. [2023-08-30 11:50:36,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:36,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1180 transitions. [2023-08-30 11:50:36,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:36,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:36,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:36,140 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 337 flow. Second operand 3 states and 1180 transitions. [2023-08-30 11:50:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 670 flow [2023-08-30 11:50:36,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:50:36,144 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 346 flow [2023-08-30 11:50:36,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-08-30 11:50:36,144 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-30 11:50:36,144 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 346 flow [2023-08-30 11:50:36,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:36,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:36,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:50:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:50:36,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:36,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash -449464820, now seen corresponding path program 1 times [2023-08-30 11:50:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881089333] [2023-08-30 11:50:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:50:36,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881089333] [2023-08-30 11:50:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881089333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171740026] [2023-08-30 11:50:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:36,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:36,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:50:36,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:50:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:36,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:50:36,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:36,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:50:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171740026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:50:36,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:50:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-08-30 11:50:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80703848] [2023-08-30 11:50:36,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:50:36,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:50:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:50:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:50:36,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 884 [2023-08-30 11:50:36,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:36,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:36,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 884 [2023-08-30 11:50:36,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:41,640 INFO L130 PetriNetUnfolder]: 33586/50942 cut-off events. [2023-08-30 11:50:41,640 INFO L131 PetriNetUnfolder]: For 2951/2951 co-relation queries the response was YES. [2023-08-30 11:50:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111388 conditions, 50942 events. 33586/50942 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 3848. Compared 426134 event pairs, 26580 based on Foata normal form. 5/31920 useless extension candidates. Maximal degree in co-relation 111372. Up to 14528 conditions per place. [2023-08-30 11:50:41,897 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 258 selfloop transitions, 31 changer transitions 0/291 dead transitions. [2023-08-30 11:50:41,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 291 transitions, 1690 flow [2023-08-30 11:50:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 11:50:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 11:50:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7728 transitions. [2023-08-30 11:50:41,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973673385438091 [2023-08-30 11:50:41,935 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7728 transitions. [2023-08-30 11:50:41,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7728 transitions. [2023-08-30 11:50:41,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:41,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7728 transitions. [2023-08-30 11:50:41,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 351.27272727272725) internal successors, (7728), 22 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:41,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:41,968 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:41,968 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 346 flow. Second operand 22 states and 7728 transitions. [2023-08-30 11:50:41,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 291 transitions, 1690 flow [2023-08-30 11:50:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 291 transitions, 1678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:50:41,975 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 586 flow [2023-08-30 11:50:41,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=586, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-08-30 11:50:41,976 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2023-08-30 11:50:41,976 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 586 flow [2023-08-30 11:50:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:41,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:41,977 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:50:41,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:50:42,182 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 11:50:42,182 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:42,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash -450917824, now seen corresponding path program 1 times [2023-08-30 11:50:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878783904] [2023-08-30 11:50:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:42,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:42,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878783904] [2023-08-30 11:50:42,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878783904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:42,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637341988] [2023-08-30 11:50:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:42,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:42,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:50:42,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:50:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:42,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:50:42,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:42,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:50:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637341988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:50:42,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:50:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:50:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059721798] [2023-08-30 11:50:42,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:50:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:50:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:50:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:50:42,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 11:50:42,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:42,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:42,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 11:50:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:57,113 INFO L130 PetriNetUnfolder]: 73888/112052 cut-off events. [2023-08-30 11:50:57,113 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-08-30 11:50:57,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245110 conditions, 112052 events. 73888/112052 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 5606. Compared 996784 event pairs, 58476 based on Foata normal form. 96/70286 useless extension candidates. Maximal degree in co-relation 245088. Up to 15180 conditions per place. [2023-08-30 11:50:57,924 INFO L137 encePairwiseOnDemand]: 873/884 looper letters, 458 selfloop transitions, 74 changer transitions 0/534 dead transitions. [2023-08-30 11:50:57,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 534 transitions, 3608 flow [2023-08-30 11:50:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:50:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:50:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4761 transitions. [2023-08-30 11:50:57,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44881221719457015 [2023-08-30 11:50:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4761 transitions. [2023-08-30 11:50:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4761 transitions. [2023-08-30 11:50:57,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:57,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4761 transitions. [2023-08-30 11:50:57,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 396.75) internal successors, (4761), 12 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:57,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:57,956 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:57,956 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 586 flow. Second operand 12 states and 4761 transitions. [2023-08-30 11:50:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 534 transitions, 3608 flow [2023-08-30 11:50:58,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 534 transitions, 3400 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-08-30 11:50:58,005 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1122 flow [2023-08-30 11:50:58,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1122, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-08-30 11:50:58,007 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-08-30 11:50:58,007 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1122 flow [2023-08-30 11:50:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:58,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:58,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:50:58,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:50:58,214 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 11:50:58,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:50:58,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 303446711, now seen corresponding path program 1 times [2023-08-30 11:50:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:58,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860931750] [2023-08-30 11:50:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:50:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:58,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860931750] [2023-08-30 11:50:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860931750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:50:58,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:50:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:50:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257062591] [2023-08-30 11:50:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:50:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:50:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:50:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:50:58,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 884 [2023-08-30 11:50:58,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1122 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:58,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:58,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 884 [2023-08-30 11:50:58,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:51:19,654 INFO L130 PetriNetUnfolder]: 114104/166524 cut-off events. [2023-08-30 11:51:19,654 INFO L131 PetriNetUnfolder]: For 13752/13752 co-relation queries the response was YES. [2023-08-30 11:51:20,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354645 conditions, 166524 events. 114104/166524 cut-off events. For 13752/13752 co-relation queries the response was YES. Maximal size of possible extension queue 7200. Compared 1359165 event pairs, 34188 based on Foata normal form. 0/98531 useless extension candidates. Maximal degree in co-relation 354615. Up to 138205 conditions per place. [2023-08-30 11:51:20,953 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 143 selfloop transitions, 2 changer transitions 3/150 dead transitions. [2023-08-30 11:51:20,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 1452 flow [2023-08-30 11:51:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:51:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:51:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-08-30 11:51:20,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434389140271493 [2023-08-30 11:51:20,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-08-30 11:51:20,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-08-30 11:51:20,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:51:20,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-08-30 11:51:20,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:20,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:20,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:20,960 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1122 flow. Second operand 3 states and 1176 transitions. [2023-08-30 11:51:20,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 1452 flow [2023-08-30 11:51:21,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1248 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 11:51:21,246 INFO L231 Difference]: Finished difference. Result has 100 places, 137 transitions, 938 flow [2023-08-30 11:51:21,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=100, PETRI_TRANSITIONS=137} [2023-08-30 11:51:21,246 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-30 11:51:21,246 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 938 flow [2023-08-30 11:51:21,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:21,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:51:21,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:51:21,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:51:21,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:51:21,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:51:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 303446704, now seen corresponding path program 1 times [2023-08-30 11:51:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:51:21,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186075645] [2023-08-30 11:51:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:51:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:51:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:51:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:51:21,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:51:21,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186075645] [2023-08-30 11:51:21,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186075645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:51:21,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:51:21,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:51:21,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57764773] [2023-08-30 11:51:21,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:51:21,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:51:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:51:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:51:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:51:21,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-08-30 11:51:21,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:21,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:51:21,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-08-30 11:51:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:51:33,546 INFO L130 PetriNetUnfolder]: 75340/115484 cut-off events. [2023-08-30 11:51:33,547 INFO L131 PetriNetUnfolder]: For 18611/18611 co-relation queries the response was YES. [2023-08-30 11:51:34,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289009 conditions, 115484 events. 75340/115484 cut-off events. For 18611/18611 co-relation queries the response was YES. Maximal size of possible extension queue 5679. Compared 1051329 event pairs, 60060 based on Foata normal form. 0/88412 useless extension candidates. Maximal degree in co-relation 288978. Up to 114560 conditions per place. [2023-08-30 11:51:34,521 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 133 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-08-30 11:51:34,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1204 flow [2023-08-30 11:51:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:51:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:51:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2023-08-30 11:51:34,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43288084464555054 [2023-08-30 11:51:34,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2023-08-30 11:51:34,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2023-08-30 11:51:34,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:51:34,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2023-08-30 11:51:34,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:34,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:34,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:34,527 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 938 flow. Second operand 3 states and 1148 transitions. [2023-08-30 11:51:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1204 flow [2023-08-30 11:51:34,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:51:34,896 INFO L231 Difference]: Finished difference. Result has 100 places, 136 transitions, 936 flow [2023-08-30 11:51:34,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2023-08-30 11:51:34,896 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-30 11:51:34,896 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 936 flow [2023-08-30 11:51:34,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:34,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:51:34,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:51:34,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:51:34,897 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:51:34,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:51:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 303446705, now seen corresponding path program 1 times [2023-08-30 11:51:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:51:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817263602] [2023-08-30 11:51:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:51:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:51:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:51:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:51:34,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:51:34,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817263602] [2023-08-30 11:51:34,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817263602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:51:34,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:51:34,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:51:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540881535] [2023-08-30 11:51:34,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:51:34,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:51:34,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:51:34,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:51:34,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:51:34,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-08-30 11:51:34,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:34,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:51:34,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-08-30 11:51:34,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:51:51,051 INFO L130 PetriNetUnfolder]: 89948/132072 cut-off events. [2023-08-30 11:51:51,052 INFO L131 PetriNetUnfolder]: For 23913/24837 co-relation queries the response was YES. [2023-08-30 11:51:51,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327554 conditions, 132072 events. 89948/132072 cut-off events. For 23913/24837 co-relation queries the response was YES. Maximal size of possible extension queue 5565. Compared 1084598 event pairs, 25740 based on Foata normal form. 132/101172 useless extension candidates. Maximal degree in co-relation 327522. Up to 90553 conditions per place. [2023-08-30 11:51:52,094 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 139 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2023-08-30 11:51:52,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 148 transitions, 1260 flow [2023-08-30 11:51:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:51:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:51:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2023-08-30 11:51:52,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385369532428356 [2023-08-30 11:51:52,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2023-08-30 11:51:52,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2023-08-30 11:51:52,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:51:52,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2023-08-30 11:51:52,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:52,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:52,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:52,101 INFO L175 Difference]: Start difference. First operand has 100 places, 136 transitions, 936 flow. Second operand 3 states and 1163 transitions. [2023-08-30 11:51:52,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 148 transitions, 1260 flow [2023-08-30 11:51:52,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 148 transitions, 1259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:51:52,201 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 953 flow [2023-08-30 11:51:52,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=953, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-08-30 11:51:52,202 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-08-30 11:51:52,202 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 953 flow [2023-08-30 11:51:52,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:52,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:51:52,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:51:52,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:51:52,203 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:51:52,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:51:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 821990299, now seen corresponding path program 1 times [2023-08-30 11:51:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:51:52,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476406784] [2023-08-30 11:51:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:51:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:51:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:51:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:51:52,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:51:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476406784] [2023-08-30 11:51:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476406784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:51:52,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:51:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:51:52,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212902355] [2023-08-30 11:51:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:51:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:51:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:51:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:51:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:51:52,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 11:51:52,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 953 flow. Second operand has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:51:52,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:51:52,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 11:51:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:52:06,390 INFO L130 PetriNetUnfolder]: 69092/107190 cut-off events. [2023-08-30 11:52:06,390 INFO L131 PetriNetUnfolder]: For 60763/60763 co-relation queries the response was YES. [2023-08-30 11:52:07,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291718 conditions, 107190 events. 69092/107190 cut-off events. For 60763/60763 co-relation queries the response was YES. Maximal size of possible extension queue 5182. Compared 976053 event pairs, 54252 based on Foata normal form. 0/98004 useless extension candidates. Maximal degree in co-relation 291684. Up to 106228 conditions per place. [2023-08-30 11:52:07,500 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 126 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2023-08-30 11:52:07,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 1215 flow [2023-08-30 11:52:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:52:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:52:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1150 transitions. [2023-08-30 11:52:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336349924585219 [2023-08-30 11:52:07,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1150 transitions. [2023-08-30 11:52:07,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1150 transitions. [2023-08-30 11:52:07,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:52:07,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1150 transitions. [2023-08-30 11:52:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.3333333333333) internal successors, (1150), 3 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:07,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:07,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:07,508 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 953 flow. Second operand 3 states and 1150 transitions. [2023-08-30 11:52:07,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 1215 flow [2023-08-30 11:52:07,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 135 transitions, 1207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:52:07,635 INFO L231 Difference]: Finished difference. Result has 101 places, 135 transitions, 955 flow [2023-08-30 11:52:07,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=955, PETRI_PLACES=101, PETRI_TRANSITIONS=135} [2023-08-30 11:52:07,636 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-08-30 11:52:07,636 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 135 transitions, 955 flow [2023-08-30 11:52:07,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:07,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:52:07,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:52:07,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:52:07,637 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 11:52:07,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:52:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash 821990301, now seen corresponding path program 1 times [2023-08-30 11:52:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:52:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50549317] [2023-08-30 11:52:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:52:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:07,709 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 11:52:07,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:52:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50549317] [2023-08-30 11:52:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50549317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:52:07,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579723680] [2023-08-30 11:52:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:52:07,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:52:07,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:52:07,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:52:07,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:52:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:52:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:52:07,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:52:07,880 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 11:52:07,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:52:07,894 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 11:52:07,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579723680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:52:07,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:52:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:52:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521108836] [2023-08-30 11:52:07,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:52:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:52:07,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:52:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:52:07,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:52:07,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 11:52:07,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 135 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 372.42857142857144) internal successors, (2607), 7 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:52:07,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:52:07,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 11:52:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand