./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-three-array-min.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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:54:33,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:54:33,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:54:33,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:54:33,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:54:33,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:54:33,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:54:33,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:54:33,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:54:33,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:54:33,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:54:33,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:54:33,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:54:33,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:54:33,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:54:33,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:54:33,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:54:33,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:54:33,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:54:33,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:54:33,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:54:33,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:54:33,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:54:33,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:54:33,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:54:33,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:54:33,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:54:33,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:54:33,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:54:33,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:54:33,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:54:33,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:54:33,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:54:33,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:54:33,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:54:33,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:54:33,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:54:33,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:54:33,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:54:33,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:54:33,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:54:33,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:54:33,882 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:54:33,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:54:33,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:54:33,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:54:33,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:54:33,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:54:33,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:54:33,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:54:33,886 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:54:33,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:54:33,887 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:54:33,887 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:54:33,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:54:33,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:54:33,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:54:33,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:54:33,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:54:33,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:54:33,888 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:54:33,889 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:54:33,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:54:33,889 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:54:33,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:54:33,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:54:33,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:54:33,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:54:33,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:54:33,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:54:33,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:54:33,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:54:33,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:54:33,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:54:33,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:54:33,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:54:33,892 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:54:33,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:54:33,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:54:33,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:54:34,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:54:34,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:54:34,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:54:34,220 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:54:34,220 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:54:34,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-30 15:54:35,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:54:35,631 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:54:35,632 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-30 15:54:35,637 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f1e6a125/ec4d2c46163f41c1a5b12dff1debee2e/FLAGf9275f59b [2023-08-30 15:54:35,653 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f1e6a125/ec4d2c46163f41c1a5b12dff1debee2e [2023-08-30 15:54:35,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:54:35,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:54:35,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:54:35,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:54:35,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:54:35,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:35,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6597e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35, skipping insertion in model container [2023-08-30 15:54:35,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:35,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:54:35,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:54:35,885 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-three-array-min.wvr.c[2815,2828] [2023-08-30 15:54:35,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:54:35,909 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:54:35,945 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-three-array-min.wvr.c[2815,2828] [2023-08-30 15:54:35,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:54:35,968 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:54:35,970 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:54:35,975 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:54:35,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35 WrapperNode [2023-08-30 15:54:35,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:54:35,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:54:35,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:54:35,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:54:35,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,046 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 288 [2023-08-30 15:54:36,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:54:36,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:54:36,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:54:36,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:54:36,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:54:36,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:54:36,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:54:36,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:54:36,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (1/1) ... [2023-08-30 15:54:36,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:54:36,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:36,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:54:36,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:54:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:54:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:54:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:54:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:54:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:54:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:54:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:54:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:54:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:54:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:54:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:54:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:54:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:54:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:54:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:54:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:54:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:54:36,201 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:54:36,303 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:54:36,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:54:36,923 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:54:37,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:54:37,205 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:54:37,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:54:37 BoogieIcfgContainer [2023-08-30 15:54:37,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:54:37,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:54:37,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:54:37,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:54:37,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:54:35" (1/3) ... [2023-08-30 15:54:37,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811862d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:54:37, skipping insertion in model container [2023-08-30 15:54:37,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:35" (2/3) ... [2023-08-30 15:54:37,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811862d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:54:37, skipping insertion in model container [2023-08-30 15:54:37,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:54:37" (3/3) ... [2023-08-30 15:54:37,219 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-08-30 15:54:37,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:54:37,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:54:37,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:54:37,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:54:37,356 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:54:37,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 15:54:37,488 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-08-30 15:54:37,488 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:54:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 31/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-08-30 15:54:37,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 15:54:37,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 335 transitions, 688 flow [2023-08-30 15:54:37,507 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:54:37,515 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 15:54:37,517 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 15:54:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 688 flow [2023-08-30 15:54:37,578 INFO L130 PetriNetUnfolder]: 30/335 cut-off events. [2023-08-30 15:54:37,579 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:54:37,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 335 events. 30/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-08-30 15:54:37,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2023-08-30 15:54:55,019 INFO L134 LiptonReduction]: Checked pairs total: 8688 [2023-08-30 15:54:55,020 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-08-30 15:54:55,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:54:55,037 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;@1180af4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:54:55,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-08-30 15:54:55,040 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:54:55,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:54:55,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:55,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:54:55,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:55,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash 47728, now seen corresponding path program 1 times [2023-08-30 15:54:55,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855765812] [2023-08-30 15:54:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:55,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855765812] [2023-08-30 15:54:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855765812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:54:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:54:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:54:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099419570] [2023-08-30 15:54:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:54:55,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:54:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:55,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:54:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:54:55,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:54:55,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:55,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:55,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:54:55,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:56,898 INFO L130 PetriNetUnfolder]: 7903/10259 cut-off events. [2023-08-30 15:54:56,899 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 15:54:56,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20817 conditions, 10259 events. 7903/10259 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50743 event pairs, 4208 based on Foata normal form. 0/4235 useless extension candidates. Maximal degree in co-relation 9320. Up to 5058 conditions per place. [2023-08-30 15:54:56,972 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 95 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-08-30 15:54:56,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 448 flow [2023-08-30 15:54:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:54:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:54:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-08-30 15:54:56,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778523489932886 [2023-08-30 15:54:56,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-08-30 15:54:56,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-08-30 15:54:56,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:57,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-08-30 15:54:57,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,020 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 1068 transitions. [2023-08-30 15:54:57,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 448 flow [2023-08-30 15:54:57,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:54:57,045 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 178 flow [2023-08-30 15:54:57,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-08-30 15:54:57,051 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 15:54:57,053 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 178 flow [2023-08-30 15:54:57,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:57,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:54:57,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:54:57,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:57,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1480951, now seen corresponding path program 1 times [2023-08-30 15:54:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377782268] [2023-08-30 15:54:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:57,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377782268] [2023-08-30 15:54:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377782268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:54:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:54:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:54:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126532975] [2023-08-30 15:54:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:54:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:54:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:54:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:54:57,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:54:57,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:57,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:54:57,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:58,416 INFO L130 PetriNetUnfolder]: 7903/10256 cut-off events. [2023-08-30 15:54:58,416 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 15:54:58,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 10256 events. 7903/10256 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50867 event pairs, 4208 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 10253. Up to 10104 conditions per place. [2023-08-30 15:54:58,488 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 55 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 15:54:58,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 278 flow [2023-08-30 15:54:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:54:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:54:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-30 15:54:58,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469798657718121 [2023-08-30 15:54:58,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-30 15:54:58,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-30 15:54:58,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:58,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-30 15:54:58,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,502 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 178 flow. Second operand 3 states and 999 transitions. [2023-08-30 15:54:58,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 278 flow [2023-08-30 15:54:58,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:54:58,505 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 156 flow [2023-08-30 15:54:58,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-08-30 15:54:58,506 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 15:54:58,506 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 156 flow [2023-08-30 15:54:58,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:58,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:54:58,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:54:58,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:58,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1480949, now seen corresponding path program 1 times [2023-08-30 15:54:58,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:58,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544619619] [2023-08-30 15:54:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544619619] [2023-08-30 15:54:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544619619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:54:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086882040] [2023-08-30 15:54:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:54:58,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:58,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:54:58,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:54:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:54:58,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:54:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:54:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086882040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:54:58,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:54:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:54:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777671178] [2023-08-30 15:54:58,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:54:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:54:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:54:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:54:58,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:54:58,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:58,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:54:58,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:01,788 INFO L130 PetriNetUnfolder]: 19756/25634 cut-off events. [2023-08-30 15:55:01,788 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 15:55:01,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51327 conditions, 25634 events. 19756/25634 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141218 event pairs, 10520 based on Foata normal form. 0/10621 useless extension candidates. Maximal degree in co-relation 51319. Up to 5056 conditions per place. [2023-08-30 15:55:01,961 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 218 selfloop transitions, 21 changer transitions 0/243 dead transitions. [2023-08-30 15:55:01,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 243 transitions, 1054 flow [2023-08-30 15:55:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:55:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:55:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2138 transitions. [2023-08-30 15:55:01,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-08-30 15:55:01,968 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2138 transitions. [2023-08-30 15:55:01,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2138 transitions. [2023-08-30 15:55:01,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:01,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2138 transitions. [2023-08-30 15:55:01,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,984 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,984 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 156 flow. Second operand 6 states and 2138 transitions. [2023-08-30 15:55:01,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 243 transitions, 1054 flow [2023-08-30 15:55:01,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 243 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:01,990 INFO L231 Difference]: Finished difference. Result has 62 places, 75 transitions, 305 flow [2023-08-30 15:55:01,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=75} [2023-08-30 15:55:01,992 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-08-30 15:55:01,992 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 75 transitions, 305 flow [2023-08-30 15:55:01,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:01,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:55:02,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:02,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:02,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:02,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:02,202 INFO L85 PathProgramCache]: Analyzing trace with hash 45951744, now seen corresponding path program 1 times [2023-08-30 15:55:02,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451182825] [2023-08-30 15:55:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451182825] [2023-08-30 15:55:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451182825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:02,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:02,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:02,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258719887] [2023-08-30 15:55:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:02,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:02,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 745 [2023-08-30 15:55:02,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:02,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 745 [2023-08-30 15:55:02,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:04,482 INFO L130 PetriNetUnfolder]: 19755/25633 cut-off events. [2023-08-30 15:55:04,483 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 15:55:04,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51375 conditions, 25633 events. 19755/25633 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141483 event pairs, 10520 based on Foata normal form. 1/10550 useless extension candidates. Maximal degree in co-relation 51363. Up to 25253 conditions per place. [2023-08-30 15:55:04,612 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:55:04,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 441 flow [2023-08-30 15:55:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-08-30 15:55:04,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425055928411633 [2023-08-30 15:55:04,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-08-30 15:55:04,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-08-30 15:55:04,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:04,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-08-30 15:55:04,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,623 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 305 flow. Second operand 3 states and 989 transitions. [2023-08-30 15:55:04,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 441 flow [2023-08-30 15:55:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 411 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:04,627 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 275 flow [2023-08-30 15:55:04,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 15:55:04,629 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-30 15:55:04,629 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 275 flow [2023-08-30 15:55:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:55:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:55:04,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:04,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1423279047, now seen corresponding path program 1 times [2023-08-30 15:55:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:04,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854549440] [2023-08-30 15:55:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854549440] [2023-08-30 15:55:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854549440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:04,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:04,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:55:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124039689] [2023-08-30 15:55:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:04,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:55:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:55:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:55:04,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 745 [2023-08-30 15:55:04,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:04,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 745 [2023-08-30 15:55:04,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:06,819 INFO L130 PetriNetUnfolder]: 15805/20511 cut-off events. [2023-08-30 15:55:06,819 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-30 15:55:06,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20511 events. 15805/20511 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110490 event pairs, 8416 based on Foata normal form. 2/8447 useless extension candidates. Maximal degree in co-relation 41097. Up to 20198 conditions per place. [2023-08-30 15:55:06,909 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 57 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-08-30 15:55:06,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 409 flow [2023-08-30 15:55:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:55:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:55:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2023-08-30 15:55:06,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436241610738255 [2023-08-30 15:55:06,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2023-08-30 15:55:06,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2023-08-30 15:55:06,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:06,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2023-08-30 15:55:06,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,923 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 275 flow. Second operand 4 states and 1300 transitions. [2023-08-30 15:55:06,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 409 flow [2023-08-30 15:55:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 405 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:06,927 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 313 flow [2023-08-30 15:55:06,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-30 15:55:06,929 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 15:55:06,930 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 313 flow [2023-08-30 15:55:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:55:06,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:55:06,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:06,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1170711598, now seen corresponding path program 2 times [2023-08-30 15:55:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873016931] [2023-08-30 15:55:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873016931] [2023-08-30 15:55:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873016931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893877300] [2023-08-30 15:55:07,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:07,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:07,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:55:07,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:07,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:07,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:55:07,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893877300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:07,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:55:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095361423] [2023-08-30 15:55:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:55:07,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-08-30 15:55:07,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:07,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:07,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-08-30 15:55:07,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:08,663 INFO L130 PetriNetUnfolder]: 15805/20510 cut-off events. [2023-08-30 15:55:08,663 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 15:55:08,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 20510 events. 15805/20510 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110426 event pairs, 8416 based on Foata normal form. 1/8447 useless extension candidates. Maximal degree in co-relation 41123. Up to 20201 conditions per place. [2023-08-30 15:55:08,763 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-08-30 15:55:08,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 439 flow [2023-08-30 15:55:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-08-30 15:55:08,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966442953020136 [2023-08-30 15:55:08,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-08-30 15:55:08,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-08-30 15:55:08,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:08,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-08-30 15:55:08,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,773 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 313 flow. Second operand 3 states and 1005 transitions. [2023-08-30 15:55:08,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 439 flow [2023-08-30 15:55:08,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:08,775 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 300 flow [2023-08-30 15:55:08,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-08-30 15:55:08,776 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2023-08-30 15:55:08,776 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 300 flow [2023-08-30 15:55:08,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:08,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:08,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:55:08,982 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,SelfDestructingSolverStorable5 [2023-08-30 15:55:08,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:08,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529539, now seen corresponding path program 1 times [2023-08-30 15:55:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568143914] [2023-08-30 15:55:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568143914] [2023-08-30 15:55:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568143914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536805261] [2023-08-30 15:55:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:09,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:09,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:09,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:09,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:55:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:09,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 15:55:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:09,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:55:09,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:09,579 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:55:09,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:55:09,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:55:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:09,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:09,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:09,718 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 [2023-08-30 15:55:09,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:09,733 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 [2023-08-30 15:55:09,740 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 9 treesize of output 7 [2023-08-30 15:55:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536805261] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:09,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:09,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:55:09,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557419733] [2023-08-30 15:55:09,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:09,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:55:09,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:55:09,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-08-30 15:55:10,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 15:55:10,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:10,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:10,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 15:55:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:12,037 INFO L130 PetriNetUnfolder]: 15805/20506 cut-off events. [2023-08-30 15:55:12,037 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 15:55:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41122 conditions, 20506 events. 15805/20506 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110543 event pairs, 8416 based on Foata normal form. 0/8446 useless extension candidates. Maximal degree in co-relation 41107. Up to 20165 conditions per place. [2023-08-30 15:55:12,142 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-08-30 15:55:12,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 430 flow [2023-08-30 15:55:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:55:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:55:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1655 transitions. [2023-08-30 15:55:12,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024608501118567 [2023-08-30 15:55:12,148 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1655 transitions. [2023-08-30 15:55:12,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1655 transitions. [2023-08-30 15:55:12,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:12,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1655 transitions. [2023-08-30 15:55:12,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,159 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,159 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 300 flow. Second operand 6 states and 1655 transitions. [2023-08-30 15:55:12,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 430 flow [2023-08-30 15:55:12,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:12,162 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 312 flow [2023-08-30 15:55:12,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-08-30 15:55:12,163 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 15:55:12,163 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 312 flow [2023-08-30 15:55:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 268.2307692307692) internal successors, (3487), 13 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:12,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:12,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:55:12,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:12,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:12,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529549, now seen corresponding path program 1 times [2023-08-30 15:55:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42564336] [2023-08-30 15:55:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:12,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42564336] [2023-08-30 15:55:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42564336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977800317] [2023-08-30 15:55:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:12,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:12,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:12,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:55:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:12,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:55:12,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:12,906 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 15:55:12,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 15:55:12,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:12,944 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:55:12,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:55:12,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:55:12,989 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:55:12,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:55:13,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:55:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:13,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:13,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:13,208 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 [2023-08-30 15:55:13,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:13,216 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 63 treesize of output 59 [2023-08-30 15:55:13,221 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 48 treesize of output 44 [2023-08-30 15:55:13,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-08-30 15:55:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:13,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977800317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:13,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:13,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 15:55:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323887522] [2023-08-30 15:55:13,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:13,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:55:13,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:13,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:55:13,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=207, Unknown=2, NotChecked=0, Total=272 [2023-08-30 15:55:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 15:55:13,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 312 flow. Second operand has 17 states, 17 states have (on average 268.05882352941177) internal successors, (4557), 17 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:13,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 15:55:13,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:15,782 INFO L130 PetriNetUnfolder]: 15805/20502 cut-off events. [2023-08-30 15:55:15,782 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 15:55:15,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41121 conditions, 20502 events. 15805/20502 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110434 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41106. Up to 20165 conditions per place. [2023-08-30 15:55:15,879 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2023-08-30 15:55:15,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 440 flow [2023-08-30 15:55:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:55:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:55:15,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-08-30 15:55:15,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002237136465327 [2023-08-30 15:55:15,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-08-30 15:55:15,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-08-30 15:55:15,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:15,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-08-30 15:55:15,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.6666666666667) internal successors, (1654), 6 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,904 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,904 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 312 flow. Second operand 6 states and 1654 transitions. [2023-08-30 15:55:15,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 440 flow [2023-08-30 15:55:15,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 413 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:55:15,907 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 307 flow [2023-08-30 15:55:15,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-30 15:55:15,909 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 15:55:15,909 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 307 flow [2023-08-30 15:55:15,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 268.05882352941177) internal successors, (4557), 17 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:15,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:15,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:16,117 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 [2023-08-30 15:55:16,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:16,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529548, now seen corresponding path program 1 times [2023-08-30 15:55:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:16,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480270513] [2023-08-30 15:55:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480270513] [2023-08-30 15:55:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480270513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133361114] [2023-08-30 15:55:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:16,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:16,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:16,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:16,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:55:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-30 15:55:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:16,848 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 15:55:16,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 15:55:16,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:16,932 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:55:16,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:55:16,958 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 [2023-08-30 15:55:16,995 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:55:16,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:55:17,022 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 [2023-08-30 15:55:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:17,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:17,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:17,396 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 [2023-08-30 15:55:17,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:17,407 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 [2023-08-30 15:55:17,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-08-30 15:55:17,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-08-30 15:55:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133361114] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:17,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:55:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308261175] [2023-08-30 15:55:17,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:55:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:55:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=266, Unknown=4, NotChecked=0, Total=342 [2023-08-30 15:55:19,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:55:20,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-08-30 15:55:20,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 307 flow. Second operand has 19 states, 19 states have (on average 259.05263157894734) internal successors, (4922), 19 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:20,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-08-30 15:55:20,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:22,297 INFO L130 PetriNetUnfolder]: 15805/20498 cut-off events. [2023-08-30 15:55:22,297 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-08-30 15:55:22,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 20498 events. 15805/20498 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110457 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41093. Up to 20165 conditions per place. [2023-08-30 15:55:22,417 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 50 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-08-30 15:55:22,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 448 flow [2023-08-30 15:55:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:55:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:55:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2123 transitions. [2023-08-30 15:55:22,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3562080536912752 [2023-08-30 15:55:22,423 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2123 transitions. [2023-08-30 15:55:22,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2123 transitions. [2023-08-30 15:55:22,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:22,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2123 transitions. [2023-08-30 15:55:22,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:22,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:22,436 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:22,436 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 307 flow. Second operand 8 states and 2123 transitions. [2023-08-30 15:55:22,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 448 flow [2023-08-30 15:55:22,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:22,439 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 339 flow [2023-08-30 15:55:22,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-08-30 15:55:22,440 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-30 15:55:22,440 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 339 flow [2023-08-30 15:55:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 259.05263157894734) internal successors, (4922), 19 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:22,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:22,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:22,647 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 [2023-08-30 15:55:22,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:22,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529536, now seen corresponding path program 1 times [2023-08-30 15:55:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586527738] [2023-08-30 15:55:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586527738] [2023-08-30 15:55:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586527738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513130379] [2023-08-30 15:55:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:22,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:22,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:22,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:55:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:23,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 15:55:23,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:23,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:55:23,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:23,060 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:55:23,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:55:23,081 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 [2023-08-30 15:55:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:23,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:23,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:23,149 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 [2023-08-30 15:55:23,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:23,158 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 [2023-08-30 15:55:23,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 15:55:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513130379] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:23,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:23,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:55:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682824577] [2023-08-30 15:55:23,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:55:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:55:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:55:23,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 745 [2023-08-30 15:55:23,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 339 flow. Second operand has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:23,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:23,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 745 [2023-08-30 15:55:23,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:25,333 INFO L130 PetriNetUnfolder]: 15805/20494 cut-off events. [2023-08-30 15:55:25,334 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-08-30 15:55:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20494 events. 15805/20494 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110462 event pairs, 8416 based on Foata normal form. 4/8450 useless extension candidates. Maximal degree in co-relation 41095. Up to 20165 conditions per place. [2023-08-30 15:55:25,421 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 51 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2023-08-30 15:55:25,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 465 flow [2023-08-30 15:55:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:55:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:55:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1856 transitions. [2023-08-30 15:55:25,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152125279642058 [2023-08-30 15:55:25,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1856 transitions. [2023-08-30 15:55:25,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1856 transitions. [2023-08-30 15:55:25,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:25,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1856 transitions. [2023-08-30 15:55:25,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.3333333333333) internal successors, (1856), 6 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:25,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:25,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:25,436 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 339 flow. Second operand 6 states and 1856 transitions. [2023-08-30 15:55:25,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 465 flow [2023-08-30 15:55:25,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 411 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 15:55:25,438 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 309 flow [2023-08-30 15:55:25,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-30 15:55:25,439 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-08-30 15:55:25,439 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 309 flow [2023-08-30 15:55:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:25,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:25,440 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:55:25,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:25,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:25,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:25,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 955798492, now seen corresponding path program 1 times [2023-08-30 15:55:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108598114] [2023-08-30 15:55:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:55:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108598114] [2023-08-30 15:55:25,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108598114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804841755] [2023-08-30 15:55:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:25,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:25,773 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:25,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:55:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:25,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:55:25,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:25,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804841755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:26,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:26,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:55:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948469093] [2023-08-30 15:55:26,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:26,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:55:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:55:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:55:26,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 745 [2023-08-30 15:55:26,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 309 flow. Second operand has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:26,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:26,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 745 [2023-08-30 15:55:26,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:28,317 INFO L130 PetriNetUnfolder]: 18831/24440 cut-off events. [2023-08-30 15:55:28,317 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2023-08-30 15:55:28,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49007 conditions, 24440 events. 18831/24440 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 132310 event pairs, 10030 based on Foata normal form. 2/10228 useless extension candidates. Maximal degree in co-relation 48993. Up to 15123 conditions per place. [2023-08-30 15:55:28,458 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 119 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2023-08-30 15:55:28,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 781 flow [2023-08-30 15:55:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:55:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:55:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2023-08-30 15:55:28,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818791946308726 [2023-08-30 15:55:28,465 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2023-08-30 15:55:28,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2023-08-30 15:55:28,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:28,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2023-08-30 15:55:28,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,478 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,478 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 309 flow. Second operand 9 states and 2871 transitions. [2023-08-30 15:55:28,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 781 flow [2023-08-30 15:55:28,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 145 transitions, 745 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:55:28,482 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 370 flow [2023-08-30 15:55:28,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 15:55:28,483 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-30 15:55:28,483 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 370 flow [2023-08-30 15:55:28,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:28,484 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:55:28,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:28,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:28,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1575423709, now seen corresponding path program 2 times [2023-08-30 15:55:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789599940] [2023-08-30 15:55:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:28,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789599940] [2023-08-30 15:55:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789599940] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977434887] [2023-08-30 15:55:28,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:28,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:28,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:28,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:28,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:55:28,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:28,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:28,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:28,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:28,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977434887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:28,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:28,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 15:55:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834142229] [2023-08-30 15:55:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:28,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:55:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:55:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:55:29,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 745 [2023-08-30 15:55:29,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:29,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:29,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 745 [2023-08-30 15:55:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:30,576 INFO L130 PetriNetUnfolder]: 17448/22677 cut-off events. [2023-08-30 15:55:30,576 INFO L131 PetriNetUnfolder]: For 2216/2216 co-relation queries the response was YES. [2023-08-30 15:55:30,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45486 conditions, 22677 events. 17448/22677 cut-off events. For 2216/2216 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 123027 event pairs, 9295 based on Foata normal form. 695/10232 useless extension candidates. Maximal degree in co-relation 45469. Up to 22337 conditions per place. [2023-08-30 15:55:30,719 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 65 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 15:55:30,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 472 flow [2023-08-30 15:55:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-08-30 15:55:30,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474272930648767 [2023-08-30 15:55:30,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-08-30 15:55:30,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-08-30 15:55:30,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:30,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-08-30 15:55:30,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:30,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:30,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:30,727 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 370 flow. Second operand 3 states and 994 transitions. [2023-08-30 15:55:30,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 472 flow [2023-08-30 15:55:30,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 409 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 15:55:30,729 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 279 flow [2023-08-30 15:55:30,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2023-08-30 15:55:30,730 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 15:55:30,730 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 279 flow [2023-08-30 15:55:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:30,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:30,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:30,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:30,936 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,SelfDestructingSolverStorable11 [2023-08-30 15:55:30,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:30,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:30,937 INFO L85 PathProgramCache]: Analyzing trace with hash 282061337, now seen corresponding path program 1 times [2023-08-30 15:55:30,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:30,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773346754] [2023-08-30 15:55:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:30,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:31,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:31,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773346754] [2023-08-30 15:55:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773346754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:31,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858461236] [2023-08-30 15:55:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:31,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:31,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:31,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:31,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:55:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:31,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:55:31,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:31,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858461236] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:31,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:55:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480883729] [2023-08-30 15:55:31,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:31,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:55:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:55:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:55:31,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:55:31,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 279 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:31,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:31,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:55:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:32,535 INFO L130 PetriNetUnfolder]: 10531/14466 cut-off events. [2023-08-30 15:55:32,535 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 15:55:32,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29122 conditions, 14466 events. 10531/14466 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 79870 event pairs, 5127 based on Foata normal form. 0/7653 useless extension candidates. Maximal degree in co-relation 29110. Up to 9862 conditions per place. [2023-08-30 15:55:32,616 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 115 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2023-08-30 15:55:32,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 139 transitions, 699 flow [2023-08-30 15:55:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:55:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:55:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2532 transitions. [2023-08-30 15:55:32,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248322147651007 [2023-08-30 15:55:32,621 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2532 transitions. [2023-08-30 15:55:32,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2532 transitions. [2023-08-30 15:55:32,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:32,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2532 transitions. [2023-08-30 15:55:32,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 316.5) internal successors, (2532), 8 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:32,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:32,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:32,632 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 279 flow. Second operand 8 states and 2532 transitions. [2023-08-30 15:55:32,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 139 transitions, 699 flow [2023-08-30 15:55:32,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 698 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:32,635 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 357 flow [2023-08-30 15:55:32,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-08-30 15:55:32,635 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-30 15:55:32,635 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 357 flow [2023-08-30 15:55:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:32,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:32,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:32,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:32,842 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,SelfDestructingSolverStorable12 [2023-08-30 15:55:32,842 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:32,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -154369339, now seen corresponding path program 1 times [2023-08-30 15:55:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113565311] [2023-08-30 15:55:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113565311] [2023-08-30 15:55:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113565311] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471107604] [2023-08-30 15:55:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:32,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:32,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:32,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:55:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:33,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:55:33,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:33,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471107604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:33,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:55:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625668100] [2023-08-30 15:55:33,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:33,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:55:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:55:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:55:33,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:55:33,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:33,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:33,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:55:33,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:34,630 INFO L130 PetriNetUnfolder]: 10573/13984 cut-off events. [2023-08-30 15:55:34,630 INFO L131 PetriNetUnfolder]: For 1484/1586 co-relation queries the response was YES. [2023-08-30 15:55:34,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 13984 events. 10573/13984 cut-off events. For 1484/1586 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 76890 event pairs, 4490 based on Foata normal form. 102/7068 useless extension candidates. Maximal degree in co-relation 33798. Up to 10177 conditions per place. [2023-08-30 15:55:34,711 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 100 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2023-08-30 15:55:34,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 732 flow [2023-08-30 15:55:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:55:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:55:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2512 transitions. [2023-08-30 15:55:34,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214765100671141 [2023-08-30 15:55:34,715 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2512 transitions. [2023-08-30 15:55:34,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2512 transitions. [2023-08-30 15:55:34,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:34,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2512 transitions. [2023-08-30 15:55:34,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:34,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:34,722 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:34,722 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 357 flow. Second operand 8 states and 2512 transitions. [2023-08-30 15:55:34,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 732 flow [2023-08-30 15:55:34,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 708 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:55:34,731 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 402 flow [2023-08-30 15:55:34,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=402, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-08-30 15:55:34,732 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 15:55:34,732 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 402 flow [2023-08-30 15:55:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:34,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:34,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:34,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:34,939 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,SelfDestructingSolverStorable13 [2023-08-30 15:55:34,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:34,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436720, now seen corresponding path program 1 times [2023-08-30 15:55:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235475834] [2023-08-30 15:55:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:35,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235475834] [2023-08-30 15:55:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235475834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206642792] [2023-08-30 15:55:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:35,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:35,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 15:55:35,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:35,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:35,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 15:55:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:36,597 INFO L130 PetriNetUnfolder]: 15794/20674 cut-off events. [2023-08-30 15:55:36,597 INFO L131 PetriNetUnfolder]: For 3872/4064 co-relation queries the response was YES. [2023-08-30 15:55:36,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53127 conditions, 20674 events. 15794/20674 cut-off events. For 3872/4064 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 116074 event pairs, 6249 based on Foata normal form. 192/11750 useless extension candidates. Maximal degree in co-relation 53107. Up to 14052 conditions per place. [2023-08-30 15:55:36,734 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 98 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-30 15:55:36,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 691 flow [2023-08-30 15:55:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-30 15:55:36,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657718120805369 [2023-08-30 15:55:36,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-30 15:55:36,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-30 15:55:36,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:36,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-30 15:55:36,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:36,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:36,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:36,740 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 402 flow. Second operand 3 states and 1041 transitions. [2023-08-30 15:55:36,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 691 flow [2023-08-30 15:55:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 667 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:55:36,761 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 392 flow [2023-08-30 15:55:36,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-30 15:55:36,762 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 15:55:36,762 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 392 flow [2023-08-30 15:55:36,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:36,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:36,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:55:36,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:36,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 462161770, now seen corresponding path program 1 times [2023-08-30 15:55:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738810681] [2023-08-30 15:55:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 15:55:36,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:36,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738810681] [2023-08-30 15:55:36,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738810681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:36,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:36,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795311240] [2023-08-30 15:55:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:36,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 15:55:36,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:36,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:36,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 15:55:36,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:39,128 INFO L130 PetriNetUnfolder]: 23605/31813 cut-off events. [2023-08-30 15:55:39,128 INFO L131 PetriNetUnfolder]: For 6979/7097 co-relation queries the response was YES. [2023-08-30 15:55:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82135 conditions, 31813 events. 23605/31813 cut-off events. For 6979/7097 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 188214 event pairs, 9249 based on Foata normal form. 118/18942 useless extension candidates. Maximal degree in co-relation 82114. Up to 17753 conditions per place. [2023-08-30 15:55:39,285 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 102 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-30 15:55:39,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 703 flow [2023-08-30 15:55:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:39,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-30 15:55:39,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-30 15:55:39,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-30 15:55:39,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-30 15:55:39,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:39,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-30 15:55:39,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:39,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:39,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:39,292 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 392 flow. Second operand 3 states and 1043 transitions. [2023-08-30 15:55:39,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 703 flow [2023-08-30 15:55:39,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:39,318 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 407 flow [2023-08-30 15:55:39,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-30 15:55:39,318 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-08-30 15:55:39,318 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 407 flow [2023-08-30 15:55:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:39,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:39,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:55:39,319 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:39,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:39,320 INFO L85 PathProgramCache]: Analyzing trace with hash 462161765, now seen corresponding path program 2 times [2023-08-30 15:55:39,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:39,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709187397] [2023-08-30 15:55:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:39,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:39,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709187397] [2023-08-30 15:55:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709187397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533745294] [2023-08-30 15:55:39,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:39,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:39,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:39,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:39,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:55:40,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:55:40,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:55:40,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:40,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:55:40,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:40,338 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:55:40,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:55:40,377 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 [2023-08-30 15:55:40,394 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 [2023-08-30 15:55:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:40,435 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 [2023-08-30 15:55:40,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:40,473 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 [2023-08-30 15:55:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:40,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:40,596 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_739 (Array Int Int)) (v_ArrVal_738 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_738) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_739) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:55:40,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:40,704 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 32 treesize of output 33 [2023-08-30 15:55:40,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:40,717 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 1235 treesize of output 1187 [2023-08-30 15:55:40,741 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 67 treesize of output 63 [2023-08-30 15:55:40,753 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 63 treesize of output 55 [2023-08-30 15:55:40,766 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 70 treesize of output 54 [2023-08-30 15:55:40,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:40,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 15:55:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-30 15:55:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533745294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:41,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-08-30 15:55:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65430224] [2023-08-30 15:55:41,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:55:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:55:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=749, Unknown=8, NotChecked=56, Total=930 [2023-08-30 15:55:41,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 745 [2023-08-30 15:55:41,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 407 flow. Second operand has 31 states, 31 states have (on average 240.38709677419354) internal successors, (7452), 31 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:41,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:41,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 745 [2023-08-30 15:55:41,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:45,357 INFO L130 PetriNetUnfolder]: 29297/40987 cut-off events. [2023-08-30 15:55:45,357 INFO L131 PetriNetUnfolder]: For 15944/16059 co-relation queries the response was YES. [2023-08-30 15:55:45,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105833 conditions, 40987 events. 29297/40987 cut-off events. For 15944/16059 co-relation queries the response was YES. Maximal size of possible extension queue 2303. Compared 272451 event pairs, 4245 based on Foata normal form. 115/26247 useless extension candidates. Maximal degree in co-relation 105811. Up to 16216 conditions per place. [2023-08-30 15:55:45,706 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 209 selfloop transitions, 52 changer transitions 0/265 dead transitions. [2023-08-30 15:55:45,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 265 transitions, 1535 flow [2023-08-30 15:55:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 15:55:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 15:55:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5268 transitions. [2023-08-30 15:55:45,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367209971236817 [2023-08-30 15:55:45,714 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5268 transitions. [2023-08-30 15:55:45,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5268 transitions. [2023-08-30 15:55:45,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:45,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5268 transitions. [2023-08-30 15:55:45,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 250.85714285714286) internal successors, (5268), 21 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:45,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 745.0) internal successors, (16390), 22 states have internal predecessors, (16390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:45,730 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 745.0) internal successors, (16390), 22 states have internal predecessors, (16390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:45,730 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 407 flow. Second operand 21 states and 5268 transitions. [2023-08-30 15:55:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 265 transitions, 1535 flow [2023-08-30 15:55:45,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 1525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:45,771 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 706 flow [2023-08-30 15:55:45,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=706, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2023-08-30 15:55:45,771 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-08-30 15:55:45,772 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 706 flow [2023-08-30 15:55:45,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 240.38709677419354) internal successors, (7452), 31 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:45,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:45,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:45,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:55:45,979 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:45,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 462161768, now seen corresponding path program 1 times [2023-08-30 15:55:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837075290] [2023-08-30 15:55:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:46,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:46,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837075290] [2023-08-30 15:55:46,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837075290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:46,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104846026] [2023-08-30 15:55:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:46,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:46,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:46,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:55:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:55:46,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:47,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:47,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:47,041 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:55:47,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 15:55:47,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:55:47,175 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:55:47,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:55:47,215 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 [2023-08-30 15:55:47,248 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 [2023-08-30 15:55:47,276 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:55:47,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:55:47,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:55:47,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:55:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:47,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:55:47,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:47,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:55:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:55:47,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:51,651 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) .cse0 2147483648)) (< 4294967295 .cse0))))) (forall ((v_ArrVal_820 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse3) (<= 0 (+ (select (select .cse4 c_~A~0.base) .cse2) .cse3 2147483648)) (< .cse3 0))))))) is different from false [2023-08-30 15:55:51,796 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_820 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_818) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse2 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_820 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_818) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_819) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_820))) (let ((.cse4 (select (select .cse3 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (< 4294967295 .cse4) (<= .cse4 0))))))) is different from false [2023-08-30 15:55:58,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:58,386 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 297 treesize of output 214 [2023-08-30 15:55:58,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:58,545 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 6723821 treesize of output 6619373 [2023-08-30 15:56:00,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:00,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6591 treesize of output 6056 [2023-08-30 15:56:00,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:00,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6047 treesize of output 5784 [2023-08-30 15:56:00,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:00,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5775 treesize of output 5680 [2023-08-30 15:56:01,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:01,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5671 treesize of output 5544 [2023-08-30 15:56:01,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:01,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5535 treesize of output 5000 [2023-08-30 15:56:01,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:01,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4991 treesize of output 4896 [2023-08-30 15:56:01,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:01,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4887 treesize of output 4760 [2023-08-30 15:56:01,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:01,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4751 treesize of output 4488 [2023-08-30 15:56:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-08-30 15:56:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104846026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:19,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:19,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2023-08-30 15:56:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467974875] [2023-08-30 15:56:19,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:19,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:56:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:19,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:56:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=676, Unknown=9, NotChecked=110, Total=930 [2023-08-30 15:56:20,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 15:56:20,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 706 flow. Second operand has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:20,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:20,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 15:56:20,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:25,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:27,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:29,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:31,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:33,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:35,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:37,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:39,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:41,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:43,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:45,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:48,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:50,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:52,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:54,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:56,824 INFO L130 PetriNetUnfolder]: 28632/39802 cut-off events. [2023-08-30 15:56:56,824 INFO L131 PetriNetUnfolder]: For 31331/31452 co-relation queries the response was YES. [2023-08-30 15:56:57,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110860 conditions, 39802 events. 28632/39802 cut-off events. For 31331/31452 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 261093 event pairs, 8938 based on Foata normal form. 121/26700 useless extension candidates. Maximal degree in co-relation 110832. Up to 34632 conditions per place. [2023-08-30 15:56:57,239 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 130 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2023-08-30 15:56:57,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 167 transitions, 1224 flow [2023-08-30 15:56:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:56:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:56:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2682 transitions. [2023-08-30 15:56:57,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2023-08-30 15:56:57,242 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2682 transitions. [2023-08-30 15:56:57,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2682 transitions. [2023-08-30 15:56:57,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:57,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2682 transitions. [2023-08-30 15:56:57,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.2) internal successors, (2682), 10 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:57,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:57,250 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:57,250 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 706 flow. Second operand 10 states and 2682 transitions. [2023-08-30 15:56:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 167 transitions, 1224 flow [2023-08-30 15:56:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 167 transitions, 1199 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 15:56:57,317 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 783 flow [2023-08-30 15:56:57,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=783, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-08-30 15:56:57,318 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 48 predicate places. [2023-08-30 15:56:57,318 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 783 flow [2023-08-30 15:56:57,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:57,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:57,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:57,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:56:57,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:56:57,522 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:56:57,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash 462161766, now seen corresponding path program 1 times [2023-08-30 15:56:57,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996017970] [2023-08-30 15:56:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:57,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:56:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996017970] [2023-08-30 15:56:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996017970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850139035] [2023-08-30 15:56:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:58,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:58,445 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:56:58,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 15:56:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:58,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:56:58,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:58,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:56:58,697 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:56:58,731 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:56:58,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:56:58,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:56:58,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:56:58,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:56:58,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:56:58,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:56:58,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:56:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:56:58,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:59,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:59,100 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 30 treesize of output 31 [2023-08-30 15:56:59,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:59,111 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 553 treesize of output 529 [2023-08-30 15:56:59,123 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 59 treesize of output 51 [2023-08-30 15:56:59,130 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 51 treesize of output 47 [2023-08-30 15:56:59,138 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 62 treesize of output 46 [2023-08-30 15:56:59,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:59,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 15:56:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:56:59,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850139035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:59,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-08-30 15:56:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640363541] [2023-08-30 15:56:59,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:59,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 15:56:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 15:56:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=586, Unknown=10, NotChecked=0, Total=702 [2023-08-30 15:57:00,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-08-30 15:57:00,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 783 flow. Second operand has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:00,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:00,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-08-30 15:57:00,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:04,596 INFO L130 PetriNetUnfolder]: 28578/39724 cut-off events. [2023-08-30 15:57:04,596 INFO L131 PetriNetUnfolder]: For 37932/38050 co-relation queries the response was YES. [2023-08-30 15:57:04,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112319 conditions, 39724 events. 28578/39724 cut-off events. For 37932/38050 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 260573 event pairs, 5199 based on Foata normal form. 118/27894 useless extension candidates. Maximal degree in co-relation 112289. Up to 23178 conditions per place. [2023-08-30 15:57:04,850 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 131 selfloop transitions, 53 changer transitions 0/188 dead transitions. [2023-08-30 15:57:04,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1389 flow [2023-08-30 15:57:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:57:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:57:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3498 transitions. [2023-08-30 15:57:04,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36117707795560144 [2023-08-30 15:57:04,853 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3498 transitions. [2023-08-30 15:57:04,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3498 transitions. [2023-08-30 15:57:04,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:04,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3498 transitions. [2023-08-30 15:57:04,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.0769230769231) internal successors, (3498), 13 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:04,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:04,863 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:04,863 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 783 flow. Second operand 13 states and 3498 transitions. [2023-08-30 15:57:04,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1389 flow [2023-08-30 15:57:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 188 transitions, 1378 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:57:04,934 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 908 flow [2023-08-30 15:57:04,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=908, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-08-30 15:57:04,935 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2023-08-30 15:57:04,935 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 908 flow [2023-08-30 15:57:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:04,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:04,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:04,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:05,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:05,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:05,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 462161769, now seen corresponding path program 1 times [2023-08-30 15:57:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888438841] [2023-08-30 15:57:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:05,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:57:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888438841] [2023-08-30 15:57:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888438841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904293670] [2023-08-30 15:57:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:05,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:05,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:05,798 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:05,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 15:57:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:05,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:57:05,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:05,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:06,009 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:57:06,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 15:57:06,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:57:06,125 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:57:06,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:57:06,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,218 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:57:06,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:57:06,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:06,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:06,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:57:06,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:06,504 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_975 (Array Int Int)) (v_ArrVal_974 (Array Int Int)) (v_ArrVal_976 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_974) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_975) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_976) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-08-30 15:57:06,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:06,680 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 33 treesize of output 34 [2023-08-30 15:57:06,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:06,709 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 35073 treesize of output 34305 [2023-08-30 15:57:06,836 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 127 treesize of output 123 [2023-08-30 15:57:06,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2023-08-30 15:57:06,855 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 115 treesize of output 99 [2023-08-30 15:57:06,865 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 130 treesize of output 98 [2023-08-30 15:57:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-08-30 15:57:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904293670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:07,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-08-30 15:57:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877574159] [2023-08-30 15:57:07,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:57:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:57:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=715, Unknown=9, NotChecked=56, Total=930 [2023-08-30 15:57:07,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 745 [2023-08-30 15:57:07,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 908 flow. Second operand has 31 states, 31 states have (on average 260.4193548387097) internal successors, (8073), 31 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:07,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:07,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 745 [2023-08-30 15:57:07,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:11,093 INFO L130 PetriNetUnfolder]: 27352/37964 cut-off events. [2023-08-30 15:57:11,093 INFO L131 PetriNetUnfolder]: For 53019/53140 co-relation queries the response was YES. [2023-08-30 15:57:11,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111546 conditions, 37964 events. 27352/37964 cut-off events. For 53019/53140 co-relation queries the response was YES. Maximal size of possible extension queue 2233. Compared 247083 event pairs, 7880 based on Foata normal form. 145/27496 useless extension candidates. Maximal degree in co-relation 111515. Up to 32894 conditions per place. [2023-08-30 15:57:11,345 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 130 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2023-08-30 15:57:11,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 169 transitions, 1420 flow [2023-08-30 15:57:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:57:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:57:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2441 transitions. [2023-08-30 15:57:11,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640566741237882 [2023-08-30 15:57:11,349 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2441 transitions. [2023-08-30 15:57:11,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2441 transitions. [2023-08-30 15:57:11,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:11,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2441 transitions. [2023-08-30 15:57:11,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.22222222222223) internal successors, (2441), 9 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:11,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:11,357 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 908 flow. Second operand 9 states and 2441 transitions. [2023-08-30 15:57:11,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 169 transitions, 1420 flow [2023-08-30 15:57:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 1363 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 15:57:11,413 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 933 flow [2023-08-30 15:57:11,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2023-08-30 15:57:11,414 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 57 predicate places. [2023-08-30 15:57:11,414 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 933 flow [2023-08-30 15:57:11,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 260.4193548387097) internal successors, (8073), 31 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:11,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:11,415 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:11,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:11,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:11,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:11,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1442119255, now seen corresponding path program 1 times [2023-08-30 15:57:11,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407069712] [2023-08-30 15:57:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:11,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407069712] [2023-08-30 15:57:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407069712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721232192] [2023-08-30 15:57:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:11,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:11,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:11,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 15:57:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:11,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:57:11,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:12,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721232192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:12,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 15:57:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884100426] [2023-08-30 15:57:12,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:57:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:57:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:57:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:57:12,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 933 flow. Second operand has 17 states, 17 states have (on average 301.5882352941176) internal successors, (5127), 17 states have internal predecessors, (5127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:12,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:12,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:57:12,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:17,057 INFO L130 PetriNetUnfolder]: 32402/44582 cut-off events. [2023-08-30 15:57:17,057 INFO L131 PetriNetUnfolder]: For 69815/69936 co-relation queries the response was YES. [2023-08-30 15:57:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133671 conditions, 44582 events. 32402/44582 cut-off events. For 69815/69936 co-relation queries the response was YES. Maximal size of possible extension queue 2082. Compared 282777 event pairs, 12710 based on Foata normal form. 3325/35845 useless extension candidates. Maximal degree in co-relation 133640. Up to 21568 conditions per place. [2023-08-30 15:57:17,391 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 346 selfloop transitions, 49 changer transitions 0/399 dead transitions. [2023-08-30 15:57:17,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 399 transitions, 2707 flow [2023-08-30 15:57:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 15:57:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 15:57:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5754 transitions. [2023-08-30 15:57:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429082774049217 [2023-08-30 15:57:17,399 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5754 transitions. [2023-08-30 15:57:17,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5754 transitions. [2023-08-30 15:57:17,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:17,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5754 transitions. [2023-08-30 15:57:17,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 319.6666666666667) internal successors, (5754), 18 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:17,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 745.0) internal successors, (14155), 19 states have internal predecessors, (14155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:17,416 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 745.0) internal successors, (14155), 19 states have internal predecessors, (14155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:17,417 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 933 flow. Second operand 18 states and 5754 transitions. [2023-08-30 15:57:17,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 399 transitions, 2707 flow [2023-08-30 15:57:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 399 transitions, 2652 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:57:17,500 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 1187 flow [2023-08-30 15:57:17,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1187, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2023-08-30 15:57:17,500 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 74 predicate places. [2023-08-30 15:57:17,500 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 1187 flow [2023-08-30 15:57:17,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 301.5882352941176) internal successors, (5127), 17 states have internal predecessors, (5127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:17,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:17,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:17,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 15:57:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:17,705 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:17,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416823, now seen corresponding path program 1 times [2023-08-30 15:57:17,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:17,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263593419] [2023-08-30 15:57:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:57:18,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263593419] [2023-08-30 15:57:18,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263593419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868311793] [2023-08-30 15:57:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:18,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:18,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:18,473 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:18,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 15:57:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:18,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:57:18,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:18,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:57:18,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:57:18,865 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:57:18,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:57:18,897 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 [2023-08-30 15:57:18,921 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 [2023-08-30 15:57:18,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:18,961 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 [2023-08-30 15:57:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:18,995 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 [2023-08-30 15:57:19,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:19,025 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 [2023-08-30 15:57:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:57:19,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:19,067 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1128 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1128) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:57:19,124 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1128 (Array Int Int)) (v_ArrVal_1127 (Array Int Int)) (v_ArrVal_1126 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1126) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1127) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1128) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:57:19,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:19,230 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 35 treesize of output 36 [2023-08-30 15:57:19,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:19,244 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 2451 treesize of output 2403 [2023-08-30 15:57:19,283 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 146 treesize of output 142 [2023-08-30 15:57:19,290 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 286 treesize of output 278 [2023-08-30 15:57:19,298 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 278 treesize of output 262 [2023-08-30 15:57:19,306 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 262 treesize of output 230 [2023-08-30 15:57:19,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:19,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-08-30 15:57:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-30 15:57:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868311793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:19,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-08-30 15:57:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021552910] [2023-08-30 15:57:19,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 15:57:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 15:57:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=635, Unknown=10, NotChecked=106, Total=870 [2023-08-30 15:57:19,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 15:57:19,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 1187 flow. Second operand has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:19,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:19,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 15:57:19,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:24,844 INFO L130 PetriNetUnfolder]: 29877/41232 cut-off events. [2023-08-30 15:57:24,844 INFO L131 PetriNetUnfolder]: For 96451/96570 co-relation queries the response was YES. [2023-08-30 15:57:24,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132443 conditions, 41232 events. 29877/41232 cut-off events. For 96451/96570 co-relation queries the response was YES. Maximal size of possible extension queue 1916. Compared 261276 event pairs, 8406 based on Foata normal form. 953/31001 useless extension candidates. Maximal degree in co-relation 132406. Up to 17573 conditions per place. [2023-08-30 15:57:25,106 INFO L137 encePairwiseOnDemand]: 732/745 looper letters, 179 selfloop transitions, 49 changer transitions 0/232 dead transitions. [2023-08-30 15:57:25,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 232 transitions, 1973 flow [2023-08-30 15:57:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 15:57:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 15:57:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2993 transitions. [2023-08-30 15:57:25,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3652226967663209 [2023-08-30 15:57:25,110 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2993 transitions. [2023-08-30 15:57:25,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2993 transitions. [2023-08-30 15:57:25,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2993 transitions. [2023-08-30 15:57:25,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 272.09090909090907) internal successors, (2993), 11 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,118 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,119 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 1187 flow. Second operand 11 states and 2993 transitions. [2023-08-30 15:57:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 232 transitions, 1973 flow [2023-08-30 15:57:25,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 232 transitions, 1923 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:25,567 INFO L231 Difference]: Finished difference. Result has 153 places, 130 transitions, 1332 flow [2023-08-30 15:57:25,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1332, PETRI_PLACES=153, PETRI_TRANSITIONS=130} [2023-08-30 15:57:25,568 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 85 predicate places. [2023-08-30 15:57:25,568 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 130 transitions, 1332 flow [2023-08-30 15:57:25,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 15:57:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 15:57:25,769 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:25,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416824, now seen corresponding path program 1 times [2023-08-30 15:57:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027123796] [2023-08-30 15:57:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:57:26,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027123796] [2023-08-30 15:57:26,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027123796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353297498] [2023-08-30 15:57:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:26,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:26,425 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:26,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 15:57:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:57:26,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:26,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-08-30 15:57:26,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:57:26,844 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:57:26,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:57:26,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:27,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:27,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:27,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:27,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:27,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:27,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:27,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 15:57:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:57:27,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:27,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:27,359 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 33 treesize of output 34 [2023-08-30 15:57:27,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:27,370 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 2193 treesize of output 2145 [2023-08-30 15:57:27,399 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 127 treesize of output 111 [2023-08-30 15:57:27,405 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 111 treesize of output 103 [2023-08-30 15:57:27,411 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 103 treesize of output 99 [2023-08-30 15:57:27,417 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 130 treesize of output 98 [2023-08-30 15:57:27,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:27,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-08-30 15:57:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:57:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353297498] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:27,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:27,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-08-30 15:57:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025100403] [2023-08-30 15:57:27,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:27,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 15:57:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 15:57:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=719, Unknown=20, NotChecked=0, Total=870 [2023-08-30 15:57:28,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 15:57:28,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 130 transitions, 1332 flow. Second operand has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:28,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 15:57:28,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:32,400 INFO L130 PetriNetUnfolder]: 27149/37654 cut-off events. [2023-08-30 15:57:32,400 INFO L131 PetriNetUnfolder]: For 104218/104337 co-relation queries the response was YES. [2023-08-30 15:57:32,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125588 conditions, 37654 events. 27149/37654 cut-off events. For 104218/104337 co-relation queries the response was YES. Maximal size of possible extension queue 1748. Compared 235357 event pairs, 8690 based on Foata normal form. 945/28379 useless extension candidates. Maximal degree in co-relation 125548. Up to 13979 conditions per place. [2023-08-30 15:57:32,648 INFO L137 encePairwiseOnDemand]: 732/745 looper letters, 177 selfloop transitions, 49 changer transitions 0/230 dead transitions. [2023-08-30 15:57:32,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 230 transitions, 2050 flow [2023-08-30 15:57:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 15:57:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 15:57:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2992 transitions. [2023-08-30 15:57:32,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651006711409396 [2023-08-30 15:57:32,651 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2992 transitions. [2023-08-30 15:57:32,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2992 transitions. [2023-08-30 15:57:32,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:32,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2992 transitions. [2023-08-30 15:57:32,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,659 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 745.0) internal successors, (8940), 12 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,660 INFO L175 Difference]: Start difference. First operand has 153 places, 130 transitions, 1332 flow. Second operand 11 states and 2992 transitions. [2023-08-30 15:57:32,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 230 transitions, 2050 flow [2023-08-30 15:57:33,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 230 transitions, 1991 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 15:57:33,446 INFO L231 Difference]: Finished difference. Result has 158 places, 128 transitions, 1353 flow [2023-08-30 15:57:33,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1353, PETRI_PLACES=158, PETRI_TRANSITIONS=128} [2023-08-30 15:57:33,446 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 90 predicate places. [2023-08-30 15:57:33,446 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 128 transitions, 1353 flow [2023-08-30 15:57:33,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 258.43333333333334) internal successors, (7753), 30 states have internal predecessors, (7753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:33,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:33,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:33,648 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:33,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1442118296, now seen corresponding path program 1 times [2023-08-30 15:57:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:33,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394223277] [2023-08-30 15:57:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:57:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394223277] [2023-08-30 15:57:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394223277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605456096] [2023-08-30 15:57:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:34,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:34,777 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:57:34,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 15:57:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:34,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 15:57:35,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:35,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,047 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 15:57:35,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-30 15:57:35,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:57:35,220 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:57:35,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 15:57:35,268 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 [2023-08-30 15:57:35,298 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 [2023-08-30 15:57:35,331 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:57:35,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 15:57:35,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:57:35,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:57:35,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:57:35,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:57:35,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:35,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:57:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:57:35,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:35,864 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (v_ArrVal_1294 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1294))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse0 0) (< 0 .cse0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) 2147483648 .cse0)))))) (forall ((~B~0.offset Int) (v_ArrVal_1294 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1294))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse3) (<= .cse3 0) (<= 0 (+ (select (select .cse4 c_~A~0.base) .cse2) 2147483648 .cse3)))))))) is different from false [2023-08-30 15:57:43,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:43,699 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 321 treesize of output 238 [2023-08-30 15:57:43,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:43,824 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 3557933 treesize of output 3530285 [2023-08-30 15:57:51,104 WARN L222 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 2504 DAG size of output: 794 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 15:57:51,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:51,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25503 treesize of output 23400 [2023-08-30 15:57:51,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:51,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23391 treesize of output 23136 [2023-08-30 15:57:51,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:51,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23127 treesize of output 22608 [2023-08-30 15:57:52,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:52,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22599 treesize of output 21552 [2023-08-30 15:57:52,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:52,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21543 treesize of output 21352 [2023-08-30 15:57:52,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:52,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21343 treesize of output 21152 [2023-08-30 15:57:53,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:53,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21143 treesize of output 20624 [2023-08-30 15:57:53,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:53,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20615 treesize of output 19568 [2023-08-30 15:57:53,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:53,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19559 treesize of output 17456 [2023-08-30 15:57:54,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:54,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17447 treesize of output 17192 [2023-08-30 16:03:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 16:03:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605456096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:03:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:03:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 33 [2023-08-30 16:03:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263760431] [2023-08-30 16:03:07,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:03:07,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 16:03:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:03:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 16:03:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=954, Unknown=38, NotChecked=64, Total=1190 [2023-08-30 16:03:07,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 745 [2023-08-30 16:03:07,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 128 transitions, 1353 flow. Second operand has 35 states, 35 states have (on average 248.34285714285716) internal successors, (8692), 35 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:07,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:03:07,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 745 [2023-08-30 16:03:07,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:03:12,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:14,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:16,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:18,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:20,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:22,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:24,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:26,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:28,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:30,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:32,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:34,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:37,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:03:38,619 INFO L130 PetriNetUnfolder]: 25275/35160 cut-off events. [2023-08-30 16:03:38,619 INFO L131 PetriNetUnfolder]: For 85717/85895 co-relation queries the response was YES. [2023-08-30 16:03:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116511 conditions, 35160 events. 25275/35160 cut-off events. For 85717/85895 co-relation queries the response was YES. Maximal size of possible extension queue 1601. Compared 221327 event pairs, 9290 based on Foata normal form. 1028/26575 useless extension candidates. Maximal degree in co-relation 116471. Up to 20172 conditions per place. [2023-08-30 16:03:38,906 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 173 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2023-08-30 16:03:38,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 218 transitions, 2042 flow [2023-08-30 16:03:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 16:03:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 16:03:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3357 transitions. [2023-08-30 16:03:38,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34661848218895197 [2023-08-30 16:03:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3357 transitions. [2023-08-30 16:03:38,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3357 transitions. [2023-08-30 16:03:38,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:03:38,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3357 transitions. [2023-08-30 16:03:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 258.2307692307692) internal successors, (3357), 13 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:38,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:38,916 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 745.0) internal successors, (10430), 14 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:38,916 INFO L175 Difference]: Start difference. First operand has 158 places, 128 transitions, 1353 flow. Second operand 13 states and 3357 transitions. [2023-08-30 16:03:38,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 218 transitions, 2042 flow [2023-08-30 16:03:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 1958 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 16:03:40,144 INFO L231 Difference]: Finished difference. Result has 164 places, 128 transitions, 1395 flow [2023-08-30 16:03:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1395, PETRI_PLACES=164, PETRI_TRANSITIONS=128} [2023-08-30 16:03:40,145 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 96 predicate places. [2023-08-30 16:03:40,145 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 128 transitions, 1395 flow [2023-08-30 16:03:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 248.34285714285716) internal successors, (8692), 35 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:40,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:03:40,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:03:40,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 16:03:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:03:40,347 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 16:03:40,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:03:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416827, now seen corresponding path program 1 times [2023-08-30 16:03:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:03:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721003319] [2023-08-30 16:03:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:03:40,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:03:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:03:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 16:03:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:03:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721003319] [2023-08-30 16:03:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721003319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:03:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685783488] [2023-08-30 16:03:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:03:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:03:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:03:41,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:03:41,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 16:03:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:03:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 16:03:41,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:03:41,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:41,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:41,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:41,670 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 16:03:41,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-30 16:03:41,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 16:03:41,856 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 16:03:41,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 16:03:41,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:41,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,016 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 16:03:42,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 16:03:42,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:42,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:42,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:03:42,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:03:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 16:03:42,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:03:42,312 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1380 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1380) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-08-30 16:03:42,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:03:42,648 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 36 treesize of output 37 [2023-08-30 16:03:42,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:03:42,705 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 559105 treesize of output 552961 [2023-08-30 16:03:42,891 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 263 treesize of output 255 [2023-08-30 16:03:42,907 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 255 treesize of output 251 [2023-08-30 16:03:42,920 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 518 treesize of output 486 [2023-08-30 16:03:42,933 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 486 treesize of output 422 [2023-08-30 16:03:42,948 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 218 treesize of output 202 [2023-08-30 16:03:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 16:03:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685783488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:03:43,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:03:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-30 16:03:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739131020] [2023-08-30 16:03:43,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:03:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 16:03:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:03:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 16:03:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=802, Unknown=21, NotChecked=60, Total=1056 [2023-08-30 16:03:43,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 745 [2023-08-30 16:03:43,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 128 transitions, 1395 flow. Second operand has 33 states, 33 states have (on average 250.3939393939394) internal successors, (8263), 33 states have internal predecessors, (8263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:43,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:03:43,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 745 [2023-08-30 16:03:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:03:46,965 INFO L130 PetriNetUnfolder]: 22649/31684 cut-off events. [2023-08-30 16:03:46,965 INFO L131 PetriNetUnfolder]: For 82943/83119 co-relation queries the response was YES. [2023-08-30 16:03:47,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105516 conditions, 31684 events. 22649/31684 cut-off events. For 82943/83119 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 200439 event pairs, 9395 based on Foata normal form. 1026/24015 useless extension candidates. Maximal degree in co-relation 105475. Up to 20193 conditions per place. [2023-08-30 16:03:47,226 INFO L137 encePairwiseOnDemand]: 738/745 looper letters, 168 selfloop transitions, 25 changer transitions 0/197 dead transitions. [2023-08-30 16:03:47,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 197 transitions, 1959 flow [2023-08-30 16:03:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:03:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:03:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2115 transitions. [2023-08-30 16:03:47,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548657718120805 [2023-08-30 16:03:47,230 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2115 transitions. [2023-08-30 16:03:47,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2115 transitions. [2023-08-30 16:03:47,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:03:47,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2115 transitions. [2023-08-30 16:03:47,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 264.375) internal successors, (2115), 8 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:47,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:47,237 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:47,237 INFO L175 Difference]: Start difference. First operand has 164 places, 128 transitions, 1395 flow. Second operand 8 states and 2115 transitions. [2023-08-30 16:03:47,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 197 transitions, 1959 flow [2023-08-30 16:03:48,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 197 transitions, 1837 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-30 16:03:48,835 INFO L231 Difference]: Finished difference. Result has 160 places, 126 transitions, 1299 flow [2023-08-30 16:03:48,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1299, PETRI_PLACES=160, PETRI_TRANSITIONS=126} [2023-08-30 16:03:48,835 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 92 predicate places. [2023-08-30 16:03:48,835 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 126 transitions, 1299 flow [2023-08-30 16:03:48,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 250.3939393939394) internal successors, (8263), 33 states have internal predecessors, (8263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:48,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:03:48,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:03:48,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 16:03:49,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:03:49,037 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 16:03:49,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:03:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1133776633, now seen corresponding path program 2 times [2023-08-30 16:03:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:03:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240172544] [2023-08-30 16:03:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:03:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:03:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:03:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 16:03:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:03:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240172544] [2023-08-30 16:03:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240172544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:03:49,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:03:49,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:03:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583883083] [2023-08-30 16:03:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:03:49,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:03:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:03:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:03:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:03:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-08-30 16:03:49,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 126 transitions, 1299 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:49,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:03:49,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-08-30 16:03:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:03:55,160 INFO L130 PetriNetUnfolder]: 40969/57288 cut-off events. [2023-08-30 16:03:55,160 INFO L131 PetriNetUnfolder]: For 174737/180862 co-relation queries the response was YES. [2023-08-30 16:03:55,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182379 conditions, 57288 events. 40969/57288 cut-off events. For 174737/180862 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 384131 event pairs, 15006 based on Foata normal form. 4877/45552 useless extension candidates. Maximal degree in co-relation 182340. Up to 32407 conditions per place. [2023-08-30 16:03:55,520 INFO L137 encePairwiseOnDemand]: 740/745 looper letters, 216 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2023-08-30 16:03:55,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 232 transitions, 2652 flow [2023-08-30 16:03:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:03:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:03:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1371 transitions. [2023-08-30 16:03:55,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46006711409395973 [2023-08-30 16:03:55,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1371 transitions. [2023-08-30 16:03:55,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1371 transitions. [2023-08-30 16:03:55,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:03:55,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1371 transitions. [2023-08-30 16:03:55,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:55,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:55,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:55,526 INFO L175 Difference]: Start difference. First operand has 160 places, 126 transitions, 1299 flow. Second operand 4 states and 1371 transitions. [2023-08-30 16:03:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 232 transitions, 2652 flow [2023-08-30 16:03:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 232 transitions, 2613 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 16:03:55,642 INFO L231 Difference]: Finished difference. Result has 160 places, 128 transitions, 1297 flow [2023-08-30 16:03:55,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1297, PETRI_PLACES=160, PETRI_TRANSITIONS=128} [2023-08-30 16:03:55,642 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 92 predicate places. [2023-08-30 16:03:55,643 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 128 transitions, 1297 flow [2023-08-30 16:03:55,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:55,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:03:55,643 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:03:55,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 16:03:55,643 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 16:03:55,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:03:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 802207339, now seen corresponding path program 1 times [2023-08-30 16:03:55,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:03:55,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550841920] [2023-08-30 16:03:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:03:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:03:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:03:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 16:03:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:03:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550841920] [2023-08-30 16:03:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550841920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:03:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813418339] [2023-08-30 16:03:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:03:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:03:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:03:55,701 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:03:55,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 16:03:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:03:55,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 16:03:55,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:03:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 16:03:55,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:03:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 16:03:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813418339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:03:56,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:03:56,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-30 16:03:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109057060] [2023-08-30 16:03:56,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:03:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 16:03:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:03:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 16:03:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-30 16:03:56,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 16:03:56,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 128 transitions, 1297 flow. Second operand has 11 states, 11 states have (on average 303.54545454545456) internal successors, (3339), 11 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:03:56,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:03:56,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 16:03:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:04:02,618 INFO L130 PetriNetUnfolder]: 43896/61959 cut-off events. [2023-08-30 16:04:02,618 INFO L131 PetriNetUnfolder]: For 184956/192769 co-relation queries the response was YES. [2023-08-30 16:04:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207236 conditions, 61959 events. 43896/61959 cut-off events. For 184956/192769 co-relation queries the response was YES. Maximal size of possible extension queue 2083. Compared 416151 event pairs, 10034 based on Foata normal form. 5415/51521 useless extension candidates. Maximal degree in co-relation 207196. Up to 22028 conditions per place. [2023-08-30 16:04:03,078 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 262 selfloop transitions, 38 changer transitions 0/314 dead transitions. [2023-08-30 16:04:03,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 314 transitions, 3009 flow [2023-08-30 16:04:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 16:04:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 16:04:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3805 transitions. [2023-08-30 16:04:03,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256152125279642 [2023-08-30 16:04:03,083 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3805 transitions. [2023-08-30 16:04:03,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3805 transitions. [2023-08-30 16:04:03,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:04:03,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3805 transitions. [2023-08-30 16:04:03,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 317.0833333333333) internal successors, (3805), 12 states have internal predecessors, (3805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:04:03,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:04:03,092 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:04:03,092 INFO L175 Difference]: Start difference. First operand has 160 places, 128 transitions, 1297 flow. Second operand 12 states and 3805 transitions. [2023-08-30 16:04:03,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 314 transitions, 3009 flow [2023-08-30 16:04:03,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 314 transitions, 3001 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:04:03,279 INFO L231 Difference]: Finished difference. Result has 173 places, 134 transitions, 1424 flow [2023-08-30 16:04:03,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1424, PETRI_PLACES=173, PETRI_TRANSITIONS=134} [2023-08-30 16:04:03,279 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 105 predicate places. [2023-08-30 16:04:03,279 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 134 transitions, 1424 flow [2023-08-30 16:04:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 303.54545454545456) internal successors, (3339), 11 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:04:03,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:04:03,280 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:04:03,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 16:04:03,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 16:04:03,480 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 16:04:03,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:04:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 831611110, now seen corresponding path program 1 times [2023-08-30 16:04:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:04:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662164194] [2023-08-30 16:04:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:04:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:04:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:04:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 16:04:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:04:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662164194] [2023-08-30 16:04:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662164194] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:04:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146853164] [2023-08-30 16:04:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:04:04,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:04:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:04:04,419 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:04:04,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 16:04:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:04:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-30 16:04:04,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:04:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:04:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:04:04,639 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 16:04:04,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 16:04:04,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 16:04:04,791 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 16:04:04,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 16:04:04,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,887 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 16:04:04,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 16:04:04,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:04,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:04:04,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:05,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:04:05,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:04:05,276 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 16:04:05,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 175 [2023-08-30 16:04:05,440 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 44 treesize of output 28 [2023-08-30 16:04:05,456 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 42 treesize of output 26 [2023-08-30 16:04:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 16:04:05,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:04:06,893 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ c_~A~0.offset 4)) (.cse1 (+ c_~A~0.offset 8))) (and (forall ((v_ArrVal_1571 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse0 c_~C~0.base v_ArrVal_1572) c_~A~0.base) .cse1) 2147483648)) (forall ((~B~0.offset Int)) (let ((.cse2 (select (select .cse0 c_~A~0.base) .cse4)) (.cse3 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< (+ .cse2 .cse3 2147483648) 0) (< 4294967295 .cse3) (<= .cse3 0) (< 2147483647 (+ .cse2 .cse3)))))))) (forall ((v_ArrVal_1571 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((~B~0.offset Int)) (let ((.cse5 (select (select .cse7 c_~A~0.base) .cse4)) (.cse6 (select (select .cse7 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< (+ .cse5 .cse6 2147483648) 0) (< 0 .cse6) (< 2147483647 (+ .cse5 .cse6)) (< (+ 9223372039002259455 .cse6) 0)))) (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse7 c_~C~0.base v_ArrVal_1572) c_~A~0.base) .cse1) 2147483648))))))) is different from false [2023-08-30 16:04:06,988 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~A~0.offset 4)) (.cse4 (+ c_~A~0.offset 8))) (and (forall ((v_ArrVal_1571 (Array Int Int)) (v_ArrVal_1570 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1570) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((~B~0.offset Int)) (let ((.cse0 (select (select .cse2 c_~B~0.base) (+ ~B~0.offset 4))) (.cse1 (select (select .cse2 c_~A~0.base) .cse3))) (or (< 0 .cse0) (< 2147483647 (+ .cse0 .cse1)) (< (+ 9223372039002259455 .cse0) 0) (< (+ .cse0 .cse1 2147483648) 0)))) (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1572) c_~A~0.base) .cse4) 2147483648))))) (forall ((v_ArrVal_1571 (Array Int Int)) (v_ArrVal_1570 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1570) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((~B~0.offset Int)) (let ((.cse6 (select (select .cse7 c_~A~0.base) .cse3)) (.cse5 (select (select .cse7 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 2147483647 (+ .cse5 .cse6)) (< 4294967295 .cse5) (< (+ .cse5 .cse6 2147483648) 0) (<= .cse5 0)))) (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1572) c_~A~0.base) .cse4) 2147483648))))))) is different from false [2023-08-30 16:04:07,061 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 8)) (.cse4 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1571 (Array Int Int)) (v_ArrVal_1570 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1570) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1572) c_~A~0.base) .cse1) 2147483648)) (forall ((~B~0.offset Int)) (let ((.cse3 (select (select .cse0 c_~A~0.base) .cse4)) (.cse2 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse2 0) (< 4294967295 .cse2) (< 2147483647 (+ .cse3 .cse2)) (< (+ .cse3 .cse2 2147483648) 0))))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1571 (Array Int Int)) (v_ArrVal_1570 (Array Int Int))) (let ((.cse5 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1569) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1570) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1571))) (or (forall ((v_ArrVal_1572 (Array Int Int))) (< (select (select (store .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1572) c_~A~0.base) .cse1) 2147483648)) (forall ((~B~0.offset Int)) (let ((.cse7 (select (select .cse5 c_~A~0.base) .cse4)) (.cse6 (select (select .cse5 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< (+ 9223372039002259455 .cse6) 0) (< 0 .cse6) (< 2147483647 (+ .cse7 .cse6)) (< (+ .cse7 .cse6 2147483648) 0))))))))) is different from false [2023-08-30 16:04:08,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:08,390 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 501 treesize of output 346 [2023-08-30 16:04:08,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:08,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1857455 treesize of output 1829383 [2023-08-30 16:04:11,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:11,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12923 treesize of output 12738 [2023-08-30 16:04:11,557 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:11,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12719 treesize of output 12464 [2023-08-30 16:04:11,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:11,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12455 treesize of output 11402 [2023-08-30 16:04:11,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:11,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 11383 treesize of output 10866 [2023-08-30 16:04:12,106 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 10847 treesize of output 10815 [2023-08-30 16:04:12,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:12,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 10815 treesize of output 9762 [2023-08-30 16:04:12,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:12,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 9743 treesize of output 9226 [2023-08-30 16:04:12,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:12,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 9207 treesize of output 9022 [2023-08-30 16:04:13,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:04:13,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9003 treesize of output 8748 [2023-08-30 16:04:13,208 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 8739 treesize of output 8707 Killed by 15