./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:12:49,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:12:49,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:12:49,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:12:49,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:12:49,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:12:49,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:12:49,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:12:49,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:12:49,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:12:49,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:12:49,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:12:49,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:12:49,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:12:49,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:12:49,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:12:49,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:12:49,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:12:49,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:12:49,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:12:49,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:12:49,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:12:49,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:12:49,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:12:49,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:12:49,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:12:49,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:12:49,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:12:49,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:12:49,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:12:49,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:12:49,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:12:49,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:12:49,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:12:49,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:12:49,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:12:49,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:12:49,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:12:49,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:12:49,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:12:49,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:12:49,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:12:49,876 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:12:49,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:12:49,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:12:49,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:12:49,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:12:49,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:12:49,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:12:49,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:12:49,879 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:12:49,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:12:49,880 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:12:49,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:12:49,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:12:49,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:12:49,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:12:49,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:12:49,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:12:49,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:12:49,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:12:49,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:12:49,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:12:49,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:12:49,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:12:49,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:12:49,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:12:49,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:12:49,885 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:12:49,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:12:50,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:12:50,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:12:50,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:12:50,205 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:12:50,205 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:12:50,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-09-01 08:12:51,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:12:51,740 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:12:51,740 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-09-01 08:12:51,751 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e33a0fe/285c098101834884af3dcf46a61e1107/FLAGa8459c8c2 [2023-09-01 08:12:51,764 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e33a0fe/285c098101834884af3dcf46a61e1107 [2023-09-01 08:12:51,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:12:51,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:12:51,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:12:51,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:12:51,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:12:51,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:51,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c17c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51, skipping insertion in model container [2023-09-01 08:12:51,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:51,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:12:51,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:12:51,934 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-more-array-sum-alt.wvr.c[2761,2774] [2023-09-01 08:12:51,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:12:51,948 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:12:51,967 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-more-array-sum-alt.wvr.c[2761,2774] [2023-09-01 08:12:51,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:12:51,978 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:12:51,978 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:12:51,985 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:12:51,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51 WrapperNode [2023-09-01 08:12:51,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:12:51,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:12:51,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:12:51,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:12:51,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:51,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,021 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 253 [2023-09-01 08:12:52,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:12:52,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:12:52,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:12:52,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:12:52,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:12:52,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:12:52,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:12:52,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:12:52,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (1/1) ... [2023-09-01 08:12:52,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:12:52,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:12:52,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:12:52,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:12:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:12:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:12:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:12:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:12:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:12:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:12:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:12:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:12:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:12:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:12:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:12:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:12:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:12:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:12:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:12:52,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:12:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:12:52,129 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:12:52,261 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:12:52,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:12:52,729 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:12:53,147 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:12:53,147 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:12:53,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:12:53 BoogieIcfgContainer [2023-09-01 08:12:53,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:12:53,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:12:53,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:12:53,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:12:53,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:12:51" (1/3) ... [2023-09-01 08:12:53,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72db56aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:12:53, skipping insertion in model container [2023-09-01 08:12:53,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:12:51" (2/3) ... [2023-09-01 08:12:53,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72db56aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:12:53, skipping insertion in model container [2023-09-01 08:12:53,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:12:53" (3/3) ... [2023-09-01 08:12:53,156 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-09-01 08:12:53,163 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:12:53,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:12:53,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-09-01 08:12:53,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:12:53,311 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:12:53,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-09-01 08:12:53,414 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-09-01 08:12:53,414 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:12:53,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-09-01 08:12:53,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-09-01 08:12:53,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 158 transitions, 331 flow [2023-09-01 08:12:53,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:12:53,438 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 158 transitions, 331 flow [2023-09-01 08:12:53,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 158 transitions, 331 flow [2023-09-01 08:12:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 158 transitions, 331 flow [2023-09-01 08:12:53,478 INFO L130 PetriNetUnfolder]: 11/158 cut-off events. [2023-09-01 08:12:53,478 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:12:53,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 158 events. 11/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 257 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-09-01 08:12:53,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2023-09-01 08:13:04,602 INFO L134 LiptonReduction]: Checked pairs total: 7429 [2023-09-01 08:13:04,603 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-09-01 08:13:04,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:13:04,621 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;@1180253d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:13:04,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-09-01 08:13:04,624 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 08:13:04,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:13:04,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:04,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:13:04,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:04,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash 32372, now seen corresponding path program 1 times [2023-09-01 08:13:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557327940] [2023-09-01 08:13:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557327940] [2023-09-01 08:13:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557327940] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:04,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:13:04,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:13:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968349089] [2023-09-01 08:13:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:13:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:13:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:13:04,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-09-01 08:13:04,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:04,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:04,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-09-01 08:13:04,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:07,845 INFO L130 PetriNetUnfolder]: 16609/21051 cut-off events. [2023-09-01 08:13:07,846 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2023-09-01 08:13:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42581 conditions, 21051 events. 16609/21051 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 1941. Compared 109889 event pairs, 8878 based on Foata normal form. 0/5826 useless extension candidates. Maximal degree in co-relation 19467. Up to 10455 conditions per place. [2023-09-01 08:13:07,998 INFO L137 encePairwiseOnDemand]: 326/336 looper letters, 77 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-09-01 08:13:07,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 352 flow [2023-09-01 08:13:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:13:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:13:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-09-01 08:13:08,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-09-01 08:13:08,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-09-01 08:13:08,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-09-01 08:13:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:08,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-09-01 08:13:08,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:08,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:08,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:08,036 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 115 flow. Second operand 3 states and 513 transitions. [2023-09-01 08:13:08,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 352 flow [2023-09-01 08:13:08,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 334 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:13:08,103 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 108 flow [2023-09-01 08:13:08,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-09-01 08:13:08,110 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-09-01 08:13:08,113 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 108 flow [2023-09-01 08:13:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:08,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:08,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:13:08,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:13:08,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:08,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1004470, now seen corresponding path program 1 times [2023-09-01 08:13:08,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:08,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060652900] [2023-09-01 08:13:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060652900] [2023-09-01 08:13:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060652900] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814404549] [2023-09-01 08:13:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:08,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:13:08,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:13:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:08,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:13:08,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:08,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:13:08,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814404549] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:08,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:13:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:13:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914042385] [2023-09-01 08:13:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:13:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:13:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:13:08,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-09-01 08:13:08,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:08,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:08,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-09-01 08:13:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:10,962 INFO L130 PetriNetUnfolder]: 16609/21050 cut-off events. [2023-09-01 08:13:10,962 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-09-01 08:13:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42343 conditions, 21050 events. 16609/21050 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 110947 event pairs, 8878 based on Foata normal form. 0/5828 useless extension candidates. Maximal degree in co-relation 21169. Up to 10453 conditions per place. [2023-09-01 08:13:11,074 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 76 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-09-01 08:13:11,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 340 flow [2023-09-01 08:13:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:13:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:13:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2023-09-01 08:13:11,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47544642857142855 [2023-09-01 08:13:11,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2023-09-01 08:13:11,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2023-09-01 08:13:11,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:11,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2023-09-01 08:13:11,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:11,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:11,084 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:11,084 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 108 flow. Second operand 4 states and 639 transitions. [2023-09-01 08:13:11,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 340 flow [2023-09-01 08:13:11,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:13:11,087 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 106 flow [2023-09-01 08:13:11,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-09-01 08:13:11,089 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-09-01 08:13:11,089 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 106 flow [2023-09-01 08:13:11,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:11,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:11,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:13:11,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:13:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:11,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:11,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1004471, now seen corresponding path program 1 times [2023-09-01 08:13:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:11,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250725440] [2023-09-01 08:13:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250725440] [2023-09-01 08:13:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250725440] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512214067] [2023-09-01 08:13:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:11,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:11,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:13:11,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:13:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:11,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:13:11,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:11,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:13:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512214067] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:13:11,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:13:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:13:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113702802] [2023-09-01 08:13:11,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:13:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:13:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:13:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:13:11,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-09-01 08:13:11,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:11,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:11,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-09-01 08:13:11,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:16,256 INFO L130 PetriNetUnfolder]: 41521/52622 cut-off events. [2023-09-01 08:13:16,256 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-09-01 08:13:16,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105842 conditions, 52622 events. 41521/52622 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 4056. Compared 303234 event pairs, 22195 based on Foata normal form. 0/14582 useless extension candidates. Maximal degree in co-relation 84667. Up to 10454 conditions per place. [2023-09-01 08:13:16,559 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 187 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2023-09-01 08:13:16,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 195 transitions, 822 flow [2023-09-01 08:13:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:13:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:13:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1035 transitions. [2023-09-01 08:13:16,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2023-09-01 08:13:16,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1035 transitions. [2023-09-01 08:13:16,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1035 transitions. [2023-09-01 08:13:16,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:16,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1035 transitions. [2023-09-01 08:13:16,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:16,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:16,571 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:16,571 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 106 flow. Second operand 6 states and 1035 transitions. [2023-09-01 08:13:16,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 195 transitions, 822 flow [2023-09-01 08:13:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 195 transitions, 819 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:13:16,580 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 139 flow [2023-09-01 08:13:16,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-09-01 08:13:16,582 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-09-01 08:13:16,582 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 139 flow [2023-09-01 08:13:16,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:16,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:16,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:13:16,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:13:16,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:13:16,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:16,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 965145024, now seen corresponding path program 1 times [2023-09-01 08:13:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739009322] [2023-09-01 08:13:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739009322] [2023-09-01 08:13:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739009322] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:16,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:13:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:13:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140092508] [2023-09-01 08:13:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:13:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:13:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:13:16,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 336 [2023-09-01 08:13:16,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:16,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:16,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 336 [2023-09-01 08:13:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:20,610 INFO L130 PetriNetUnfolder]: 29857/39626 cut-off events. [2023-09-01 08:13:20,610 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-09-01 08:13:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79807 conditions, 39626 events. 29857/39626 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 3544. Compared 250148 event pairs, 18030 based on Foata normal form. 0/13196 useless extension candidates. Maximal degree in co-relation 72761. Up to 35851 conditions per place. [2023-09-01 08:13:20,772 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 95 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-09-01 08:13:20,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 454 flow [2023-09-01 08:13:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:13:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:13:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2023-09-01 08:13:20,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601190476190476 [2023-09-01 08:13:20,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2023-09-01 08:13:20,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2023-09-01 08:13:20,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:20,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2023-09-01 08:13:20,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:20,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:20,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:20,787 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 139 flow. Second operand 5 states and 773 transitions. [2023-09-01 08:13:20,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 454 flow [2023-09-01 08:13:20,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 446 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:13:20,791 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 167 flow [2023-09-01 08:13:20,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-09-01 08:13:20,792 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-09-01 08:13:20,793 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 167 flow [2023-09-01 08:13:20,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:20,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:20,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:13:20,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:13:20,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:20,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash -139673867, now seen corresponding path program 2 times [2023-09-01 08:13:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529246389] [2023-09-01 08:13:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:20,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529246389] [2023-09-01 08:13:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529246389] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783736635] [2023-09-01 08:13:20,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:13:20,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:20,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:13:20,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:13:21,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:13:21,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:13:21,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:13:21,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:13:21,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:13:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783736635] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:21,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:13:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:13:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114126483] [2023-09-01 08:13:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:13:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:13:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:13:21,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-09-01 08:13:21,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:21,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:21,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-09-01 08:13:21,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:24,588 INFO L130 PetriNetUnfolder]: 35064/44611 cut-off events. [2023-09-01 08:13:24,588 INFO L131 PetriNetUnfolder]: For 1939/2152 co-relation queries the response was YES. [2023-09-01 08:13:24,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101742 conditions, 44611 events. 35064/44611 cut-off events. For 1939/2152 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 257418 event pairs, 18875 based on Foata normal form. 214/14605 useless extension candidates. Maximal degree in co-relation 96776. Up to 44306 conditions per place. [2023-09-01 08:13:24,825 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 43 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-09-01 08:13:24,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 245 flow [2023-09-01 08:13:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:13:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:13:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-09-01 08:13:24,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593253968253968 [2023-09-01 08:13:24,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-09-01 08:13:24,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-09-01 08:13:24,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:24,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-09-01 08:13:24,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:24,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:24,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:24,831 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 167 flow. Second operand 3 states and 463 transitions. [2023-09-01 08:13:24,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 245 flow [2023-09-01 08:13:24,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 229 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 08:13:24,839 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 143 flow [2023-09-01 08:13:24,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-09-01 08:13:24,840 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-09-01 08:13:24,840 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 143 flow [2023-09-01 08:13:24,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:24,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:24,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:13:24,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:13:25,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:25,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:25,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash -139854526, now seen corresponding path program 1 times [2023-09-01 08:13:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093788229] [2023-09-01 08:13:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:13:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093788229] [2023-09-01 08:13:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093788229] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:13:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:13:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53769843] [2023-09-01 08:13:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:13:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:13:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:13:25,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-09-01 08:13:25,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:25,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:25,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-09-01 08:13:25,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:30,015 INFO L130 PetriNetUnfolder]: 43604/56699 cut-off events. [2023-09-01 08:13:30,015 INFO L131 PetriNetUnfolder]: For 1144/1357 co-relation queries the response was YES. [2023-09-01 08:13:30,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124827 conditions, 56699 events. 43604/56699 cut-off events. For 1144/1357 co-relation queries the response was YES. Maximal size of possible extension queue 4863. Compared 357577 event pairs, 9535 based on Foata normal form. 213/19244 useless extension candidates. Maximal degree in co-relation 124816. Up to 37137 conditions per place. [2023-09-01 08:13:30,256 INFO L137 encePairwiseOnDemand]: 330/336 looper letters, 73 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-09-01 08:13:30,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 378 flow [2023-09-01 08:13:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:13:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:13:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-09-01 08:13:30,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-09-01 08:13:30,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-09-01 08:13:30,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-09-01 08:13:30,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:30,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-09-01 08:13:30,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:30,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:30,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:30,261 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 143 flow. Second operand 3 states and 497 transitions. [2023-09-01 08:13:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 378 flow [2023-09-01 08:13:30,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:13:30,270 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 176 flow [2023-09-01 08:13:30,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-09-01 08:13:30,270 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-09-01 08:13:30,271 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 176 flow [2023-09-01 08:13:30,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:30,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:30,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:13:30,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:13:30,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:30,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -139854459, now seen corresponding path program 1 times [2023-09-01 08:13:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:30,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089227276] [2023-09-01 08:13:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:13:30,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089227276] [2023-09-01 08:13:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089227276] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:30,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:13:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:13:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546245377] [2023-09-01 08:13:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:13:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:30,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:13:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:13:30,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-09-01 08:13:30,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:30,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:30,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-09-01 08:13:30,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:34,825 INFO L130 PetriNetUnfolder]: 44577/58777 cut-off events. [2023-09-01 08:13:34,825 INFO L131 PetriNetUnfolder]: For 6072/6072 co-relation queries the response was YES. [2023-09-01 08:13:34,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134465 conditions, 58777 events. 44577/58777 cut-off events. For 6072/6072 co-relation queries the response was YES. Maximal size of possible extension queue 4976. Compared 386139 event pairs, 18154 based on Foata normal form. 0/22943 useless extension candidates. Maximal degree in co-relation 134452. Up to 36768 conditions per place. [2023-09-01 08:13:35,140 INFO L137 encePairwiseOnDemand]: 332/336 looper letters, 74 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-09-01 08:13:35,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 385 flow [2023-09-01 08:13:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:13:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:13:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-09-01 08:13:35,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-09-01 08:13:35,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-09-01 08:13:35,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-09-01 08:13:35,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:35,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-09-01 08:13:35,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:35,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:35,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:35,145 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 176 flow. Second operand 3 states and 496 transitions. [2023-09-01 08:13:35,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 385 flow [2023-09-01 08:13:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:13:35,155 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 166 flow [2023-09-01 08:13:35,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-09-01 08:13:35,156 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-09-01 08:13:35,156 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 166 flow [2023-09-01 08:13:35,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:35,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:35,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:13:35,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:13:35,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:35,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:35,157 INFO L85 PathProgramCache]: Analyzing trace with hash -139854529, now seen corresponding path program 1 times [2023-09-01 08:13:35,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:35,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817358557] [2023-09-01 08:13:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:35,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817358557] [2023-09-01 08:13:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817358557] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944913153] [2023-09-01 08:13:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:35,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:35,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:35,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:13:35,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:13:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:35,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:13:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:35,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:13:35,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:13:35,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:13:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:35,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:13:35,685 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-09-01 08:13:35,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:35,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 08:13:35,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:35,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 08:13:35,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-09-01 08:13:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:13:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944913153] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:13:35,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:13:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:13:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925156624] [2023-09-01 08:13:35,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:13:35,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:13:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:13:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-09-01 08:13:35,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 336 [2023-09-01 08:13:35,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:35,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:35,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 336 [2023-09-01 08:13:35,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:42,072 INFO L130 PetriNetUnfolder]: 56035/75535 cut-off events. [2023-09-01 08:13:42,072 INFO L131 PetriNetUnfolder]: For 13508/13508 co-relation queries the response was YES. [2023-09-01 08:13:42,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169231 conditions, 75535 events. 56035/75535 cut-off events. For 13508/13508 co-relation queries the response was YES. Maximal size of possible extension queue 7249. Compared 541624 event pairs, 20794 based on Foata normal form. 0/28461 useless extension candidates. Maximal degree in co-relation 169218. Up to 48809 conditions per place. [2023-09-01 08:13:42,456 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2023-09-01 08:13:42,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 565 flow [2023-09-01 08:13:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:13:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:13:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-09-01 08:13:42,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-09-01 08:13:42,459 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-09-01 08:13:42,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-09-01 08:13:42,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:42,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-09-01 08:13:42,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:42,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:42,466 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:42,466 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 166 flow. Second operand 8 states and 1029 transitions. [2023-09-01 08:13:42,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 565 flow [2023-09-01 08:13:42,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:13:42,478 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 280 flow [2023-09-01 08:13:42,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-09-01 08:13:42,478 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-09-01 08:13:42,479 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 280 flow [2023-09-01 08:13:42,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:42,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:42,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:13:42,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:13:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:42,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:42,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -139854530, now seen corresponding path program 1 times [2023-09-01 08:13:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417340008] [2023-09-01 08:13:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417340008] [2023-09-01 08:13:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417340008] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790143399] [2023-09-01 08:13:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:42,901 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) [2023-09-01 08:13:42,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:13:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:43,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 08:13:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:43,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:13:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:13:43,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:13:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:43,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:13:43,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:43,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:13:43,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:43,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:13:43,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-09-01 08:13:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790143399] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:13:43,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:13:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:13:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478116918] [2023-09-01 08:13:43,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:13:43,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:13:43,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:13:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2023-09-01 08:13:43,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 336 [2023-09-01 08:13:43,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 280 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:43,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:43,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 336 [2023-09-01 08:13:43,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:50,470 INFO L130 PetriNetUnfolder]: 59621/80797 cut-off events. [2023-09-01 08:13:50,470 INFO L131 PetriNetUnfolder]: For 34993/34993 co-relation queries the response was YES. [2023-09-01 08:13:50,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188667 conditions, 80797 events. 59621/80797 cut-off events. For 34993/34993 co-relation queries the response was YES. Maximal size of possible extension queue 7839. Compared 590874 event pairs, 24511 based on Foata normal form. 4/32918 useless extension candidates. Maximal degree in co-relation 188651. Up to 53993 conditions per place. [2023-09-01 08:13:50,918 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-09-01 08:13:50,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 647 flow [2023-09-01 08:13:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:13:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:13:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1132 transitions. [2023-09-01 08:13:50,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211309523809524 [2023-09-01 08:13:50,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1132 transitions. [2023-09-01 08:13:50,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1132 transitions. [2023-09-01 08:13:50,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:50,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1132 transitions. [2023-09-01 08:13:50,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:50,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:50,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:50,929 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 280 flow. Second operand 8 states and 1132 transitions. [2023-09-01 08:13:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 647 flow [2023-09-01 08:13:50,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:13:50,944 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 344 flow [2023-09-01 08:13:50,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-09-01 08:13:50,945 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-09-01 08:13:50,945 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 344 flow [2023-09-01 08:13:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:50,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:50,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:13:50,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:13:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:51,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:51,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -202912497, now seen corresponding path program 1 times [2023-09-01 08:13:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738065577] [2023-09-01 08:13:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:51,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:51,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738065577] [2023-09-01 08:13:51,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738065577] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:13:51,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:13:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:13:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388343629] [2023-09-01 08:13:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:13:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:13:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:13:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:13:51,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 336 [2023-09-01 08:13:51,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:51,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:51,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 336 [2023-09-01 08:13:51,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:13:57,027 INFO L130 PetriNetUnfolder]: 47391/67898 cut-off events. [2023-09-01 08:13:57,027 INFO L131 PetriNetUnfolder]: For 56878/56943 co-relation queries the response was YES. [2023-09-01 08:13:57,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166641 conditions, 67898 events. 47391/67898 cut-off events. For 56878/56943 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 525016 event pairs, 33952 based on Foata normal form. 65/30952 useless extension candidates. Maximal degree in co-relation 166623. Up to 66858 conditions per place. [2023-09-01 08:13:57,403 INFO L137 encePairwiseOnDemand]: 327/336 looper letters, 91 selfloop transitions, 4 changer transitions 2/101 dead transitions. [2023-09-01 08:13:57,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 627 flow [2023-09-01 08:13:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:13:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:13:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2023-09-01 08:13:57,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2023-09-01 08:13:57,405 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2023-09-01 08:13:57,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2023-09-01 08:13:57,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:13:57,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2023-09-01 08:13:57,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:57,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:57,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:57,410 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 344 flow. Second operand 5 states and 749 transitions. [2023-09-01 08:13:57,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 627 flow [2023-09-01 08:13:57,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 618 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:13:57,439 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 360 flow [2023-09-01 08:13:57,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2023-09-01 08:13:57,440 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-09-01 08:13:57,440 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 360 flow [2023-09-01 08:13:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:57,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:13:57,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:13:57,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:13:57,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:13:57,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:13:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -40520299, now seen corresponding path program 1 times [2023-09-01 08:13:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:13:57,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690118123] [2023-09-01 08:13:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:13:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:13:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690118123] [2023-09-01 08:13:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690118123] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:13:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287927952] [2023-09-01 08:13:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:13:57,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:13:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:13:57,717 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) [2023-09-01 08:13:57,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:13:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:13:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:13:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:13:57,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:13:57,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:13:57,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:13:57,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:13:57,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:13:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:13:57,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:13:58,034 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-09-01 08:13:58,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:58,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:13:58,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:13:58,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:13:58,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-09-01 08:13:58,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-09-01 08:13:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:13:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287927952] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:13:58,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:13:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 08:13:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093540474] [2023-09-01 08:13:58,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:13:58,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 08:13:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:13:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 08:13:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=159, Unknown=5, NotChecked=26, Total=240 [2023-09-01 08:13:58,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-09-01 08:13:58,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 360 flow. Second operand has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:13:58,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:13:58,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-09-01 08:13:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:05,096 INFO L130 PetriNetUnfolder]: 56027/75633 cut-off events. [2023-09-01 08:14:05,096 INFO L131 PetriNetUnfolder]: For 59599/59677 co-relation queries the response was YES. [2023-09-01 08:14:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202353 conditions, 75633 events. 56027/75633 cut-off events. For 59599/59677 co-relation queries the response was YES. Maximal size of possible extension queue 7412. Compared 545145 event pairs, 12440 based on Foata normal form. 118/34746 useless extension candidates. Maximal degree in co-relation 202332. Up to 50953 conditions per place. [2023-09-01 08:14:05,601 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 117 selfloop transitions, 29 changer transitions 1/150 dead transitions. [2023-09-01 08:14:05,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 963 flow [2023-09-01 08:14:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:14:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:14:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-09-01 08:14:05,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-09-01 08:14:05,604 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-09-01 08:14:05,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-09-01 08:14:05,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:05,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-09-01 08:14:05,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:05,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:05,611 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:05,611 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 360 flow. Second operand 8 states and 1026 transitions. [2023-09-01 08:14:05,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 963 flow [2023-09-01 08:14:05,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 150 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:14:05,735 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 552 flow [2023-09-01 08:14:05,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-09-01 08:14:05,736 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-09-01 08:14:05,736 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 552 flow [2023-09-01 08:14:05,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:05,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:05,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:05,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:05,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:05,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -40520016, now seen corresponding path program 1 times [2023-09-01 08:14:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:05,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142969190] [2023-09-01 08:14:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:05,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:06,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:06,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142969190] [2023-09-01 08:14:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142969190] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596707932] [2023-09-01 08:14:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:06,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:06,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:06,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:06,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:14:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:14:06,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:06,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596707932] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:06,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-09-01 08:14:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119158478] [2023-09-01 08:14:06,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:14:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:14:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:14:06,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 336 [2023-09-01 08:14:06,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 552 flow. Second operand has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:06,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:06,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 336 [2023-09-01 08:14:06,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:12,373 INFO L130 PetriNetUnfolder]: 48036/64983 cut-off events. [2023-09-01 08:14:12,373 INFO L131 PetriNetUnfolder]: For 85799/85882 co-relation queries the response was YES. [2023-09-01 08:14:12,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181321 conditions, 64983 events. 48036/64983 cut-off events. For 85799/85882 co-relation queries the response was YES. Maximal size of possible extension queue 6044. Compared 456636 event pairs, 21773 based on Foata normal form. 931/31168 useless extension candidates. Maximal degree in co-relation 181298. Up to 44645 conditions per place. [2023-09-01 08:14:12,738 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 245 selfloop transitions, 15 changer transitions 3/266 dead transitions. [2023-09-01 08:14:12,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 266 transitions, 1716 flow [2023-09-01 08:14:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:14:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:14:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1805 transitions. [2023-09-01 08:14:12,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476686507936508 [2023-09-01 08:14:12,744 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1805 transitions. [2023-09-01 08:14:12,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1805 transitions. [2023-09-01 08:14:12,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:12,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1805 transitions. [2023-09-01 08:14:12,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.41666666666666) internal successors, (1805), 12 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:12,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:12,754 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:12,754 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 552 flow. Second operand 12 states and 1805 transitions. [2023-09-01 08:14:12,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 266 transitions, 1716 flow [2023-09-01 08:14:12,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 1665 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-09-01 08:14:12,886 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 706 flow [2023-09-01 08:14:12,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-09-01 08:14:12,887 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2023-09-01 08:14:12,887 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 706 flow [2023-09-01 08:14:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:12,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:12,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:12,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:13,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:13,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:13,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -40342668, now seen corresponding path program 1 times [2023-09-01 08:14:13,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:13,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782833648] [2023-09-01 08:14:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782833648] [2023-09-01 08:14:13,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782833648] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270091470] [2023-09-01 08:14:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:13,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:13,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:14:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:13,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:14:13,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:13,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:14:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:13,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:14:13,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:13,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:14:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:13,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:13,614 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_408 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-09-01 08:14:13,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:13,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:14:13,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:13,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-09-01 08:14:13,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-09-01 08:14:13,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-09-01 08:14:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270091470] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:13,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:13,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:14:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505394422] [2023-09-01 08:14:13,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:14:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:14:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-09-01 08:14:13,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-09-01 08:14:13,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 706 flow. Second operand has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:13,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:13,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-09-01 08:14:13,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:20,056 INFO L130 PetriNetUnfolder]: 48483/64547 cut-off events. [2023-09-01 08:14:20,056 INFO L131 PetriNetUnfolder]: For 105612/105692 co-relation queries the response was YES. [2023-09-01 08:14:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190741 conditions, 64547 events. 48483/64547 cut-off events. For 105612/105692 co-relation queries the response was YES. Maximal size of possible extension queue 6053. Compared 441161 event pairs, 18031 based on Foata normal form. 124/29824 useless extension candidates. Maximal degree in co-relation 190712. Up to 44987 conditions per place. [2023-09-01 08:14:20,483 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 122 selfloop transitions, 35 changer transitions 1/161 dead transitions. [2023-09-01 08:14:20,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1240 flow [2023-09-01 08:14:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:14:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:14:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2023-09-01 08:14:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38132440476190477 [2023-09-01 08:14:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2023-09-01 08:14:20,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2023-09-01 08:14:20,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:20,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2023-09-01 08:14:20,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:20,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:20,493 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:20,493 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 706 flow. Second operand 8 states and 1025 transitions. [2023-09-01 08:14:20,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1240 flow [2023-09-01 08:14:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 1227 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 08:14:20,668 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 772 flow [2023-09-01 08:14:20,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-09-01 08:14:20,669 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2023-09-01 08:14:20,669 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 772 flow [2023-09-01 08:14:20,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:20,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:20,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:20,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:20,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 08:14:20,870 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:20,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561779, now seen corresponding path program 1 times [2023-09-01 08:14:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751691464] [2023-09-01 08:14:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751691464] [2023-09-01 08:14:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751691464] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576522892] [2023-09-01 08:14:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:21,099 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:21,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:14:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:21,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:14:21,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:21,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:14:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:21,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:14:21,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:21,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:14:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:21,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:21,370 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_452 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_452) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-09-01 08:14:21,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:21,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:14:21,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:21,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:14:21,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 08:14:21,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 08:14:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576522892] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:21,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:14:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209574797] [2023-09-01 08:14:21,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:14:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:14:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-09-01 08:14:21,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-09-01 08:14:21,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 772 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:21,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:21,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-09-01 08:14:21,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:29,153 INFO L130 PetriNetUnfolder]: 57546/82923 cut-off events. [2023-09-01 08:14:29,153 INFO L131 PetriNetUnfolder]: For 188954/189235 co-relation queries the response was YES. [2023-09-01 08:14:29,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248020 conditions, 82923 events. 57546/82923 cut-off events. For 188954/189235 co-relation queries the response was YES. Maximal size of possible extension queue 8435. Compared 682599 event pairs, 16868 based on Foata normal form. 278/41079 useless extension candidates. Maximal degree in co-relation 247990. Up to 48298 conditions per place. [2023-09-01 08:14:29,795 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 146 selfloop transitions, 40 changer transitions 1/195 dead transitions. [2023-09-01 08:14:29,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1901 flow [2023-09-01 08:14:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:14:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:14:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-09-01 08:14:29,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-09-01 08:14:29,798 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-09-01 08:14:29,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-09-01 08:14:29,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:29,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-09-01 08:14:29,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:29,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:29,805 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:29,805 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 772 flow. Second operand 8 states and 1029 transitions. [2023-09-01 08:14:29,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1901 flow [2023-09-01 08:14:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 195 transitions, 1857 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-09-01 08:14:30,283 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 1059 flow [2023-09-01 08:14:30,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2023-09-01 08:14:30,284 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2023-09-01 08:14:30,284 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 1059 flow [2023-09-01 08:14:30,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:30,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:30,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:30,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:30,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:14:30,492 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:30,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561778, now seen corresponding path program 1 times [2023-09-01 08:14:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657706615] [2023-09-01 08:14:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657706615] [2023-09-01 08:14:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657706615] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:14:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204533004] [2023-09-01 08:14:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:30,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:14:30,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:14:30,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:14:30,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:14:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:30,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 08:14:30,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:14:30,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:14:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:30,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:14:30,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:14:30,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:14:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:30,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:14:30,997 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_496) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-09-01 08:14:33,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:33,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:14:33,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:14:33,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-09-01 08:14:33,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-09-01 08:14:33,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-09-01 08:14:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:14:33,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204533004] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:14:33,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:14:33,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:14:33,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681918969] [2023-09-01 08:14:33,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:14:33,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 08:14:33,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 08:14:33,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-09-01 08:14:33,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-09-01 08:14:33,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 1059 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:33,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:33,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-09-01 08:14:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:41,510 INFO L130 PetriNetUnfolder]: 59726/86555 cut-off events. [2023-09-01 08:14:41,510 INFO L131 PetriNetUnfolder]: For 212223/212490 co-relation queries the response was YES. [2023-09-01 08:14:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278683 conditions, 86555 events. 59726/86555 cut-off events. For 212223/212490 co-relation queries the response was YES. Maximal size of possible extension queue 8543. Compared 725251 event pairs, 20262 based on Foata normal form. 264/47471 useless extension candidates. Maximal degree in co-relation 278650. Up to 52001 conditions per place. [2023-09-01 08:14:42,179 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 145 selfloop transitions, 56 changer transitions 1/210 dead transitions. [2023-09-01 08:14:42,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 210 transitions, 2198 flow [2023-09-01 08:14:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:14:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:14:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-09-01 08:14:42,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-09-01 08:14:42,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-09-01 08:14:42,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-09-01 08:14:42,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:42,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-09-01 08:14:42,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:42,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:42,187 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:42,187 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 1059 flow. Second operand 8 states and 1026 transitions. [2023-09-01 08:14:42,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 210 transitions, 2198 flow [2023-09-01 08:14:43,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2185 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 08:14:43,073 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 1340 flow [2023-09-01 08:14:43,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-09-01 08:14:43,075 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2023-09-01 08:14:43,075 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 1340 flow [2023-09-01 08:14:43,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:43,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:43,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:43,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:14:43,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:14:43,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:43,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169299, now seen corresponding path program 1 times [2023-09-01 08:14:43,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:43,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621096806] [2023-09-01 08:14:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:14:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621096806] [2023-09-01 08:14:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621096806] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:14:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167617195] [2023-09-01 08:14:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:43,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:14:43,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-09-01 08:14:43,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 1340 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:43,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:43,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-09-01 08:14:43,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:14:50,927 INFO L130 PetriNetUnfolder]: 53455/77962 cut-off events. [2023-09-01 08:14:50,927 INFO L131 PetriNetUnfolder]: For 220168/220444 co-relation queries the response was YES. [2023-09-01 08:14:51,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255078 conditions, 77962 events. 53455/77962 cut-off events. For 220168/220444 co-relation queries the response was YES. Maximal size of possible extension queue 7700. Compared 645058 event pairs, 35339 based on Foata normal form. 272/44483 useless extension candidates. Maximal degree in co-relation 255044. Up to 77579 conditions per place. [2023-09-01 08:14:51,630 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 118 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2023-09-01 08:14:51,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 130 transitions, 1523 flow [2023-09-01 08:14:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:14:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:14:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-09-01 08:14:51,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-09-01 08:14:51,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-09-01 08:14:51,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-09-01 08:14:51,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:14:51,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-09-01 08:14:51,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:51,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:51,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:51,634 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 1340 flow. Second operand 3 states and 462 transitions. [2023-09-01 08:14:51,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 130 transitions, 1523 flow [2023-09-01 08:14:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 1506 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:14:52,284 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1270 flow [2023-09-01 08:14:52,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1270, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-09-01 08:14:52,285 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-09-01 08:14:52,285 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1270 flow [2023-09-01 08:14:52,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:52,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:14:52,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 08:14:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:14:52,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-09-01 08:14:52,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:14:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169298, now seen corresponding path program 2 times [2023-09-01 08:14:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:14:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439765205] [2023-09-01 08:14:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:14:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:14:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:14:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:14:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:14:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439765205] [2023-09-01 08:14:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439765205] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:14:52,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:14:52,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:14:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81680344] [2023-09-01 08:14:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:14:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:14:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:14:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:14:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:14:52,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-09-01 08:14:52,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:14:52,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:14:52,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-09-01 08:14:52,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand