./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.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-max.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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --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 15:52:49,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:52:49,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:52:49,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:52:49,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:52:49,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:52:49,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:52:49,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:52:49,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:52:49,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:52:49,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:52:49,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:52:49,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:52:49,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:52:49,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:52:49,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:52:49,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:52:49,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:52:49,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:52:49,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:52:49,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:52:49,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:52:49,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:52:49,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:52:49,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:52:49,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:52:49,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:52:49,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:52:49,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:52:49,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:52:49,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:52:49,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:52:49,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:52:49,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:52:49,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:52:49,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:52:49,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:52:49,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:52:49,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:52:49,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:52:49,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:52:49,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:52:49,159 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:52:49,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:52:49,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:52:49,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:52:49,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:52:49,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:52:49,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:52:49,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:52:49,161 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:52:49,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:52:49,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:52:49,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:52:49,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:52:49,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:52:49,163 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:52:49,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:52:49,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:52:49,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:52:49,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:52:49,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:52:49,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:52:49,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:52:49,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:52:49,166 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:52:49,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:52:49,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:52:49,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:52:49,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:52:49,405 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:52:49,406 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:52:49,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 15:52:50,313 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:52:50,476 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:52:50,477 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 15:52:50,483 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e9c07b8/e939c95672184799916072da7caf5554/FLAG419e7d9b4 [2023-08-30 15:52:50,501 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e9c07b8/e939c95672184799916072da7caf5554 [2023-08-30 15:52:50,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:52:50,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:52:50,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:52:50,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:52:50,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:52:50,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af596e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50, skipping insertion in model container [2023-08-30 15:52:50,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:52:50,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:52:50,678 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-max.wvr.c[2823,2836] [2023-08-30 15:52:50,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:52:50,691 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:52:50,714 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-max.wvr.c[2823,2836] [2023-08-30 15:52:50,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:52:50,721 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:52:50,721 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:52:50,725 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:52:50,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50 WrapperNode [2023-08-30 15:52:50,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:52:50,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:52:50,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:52:50,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:52:50,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,762 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 288 [2023-08-30 15:52:50,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:52:50,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:52:50,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:52:50,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:52:50,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:52:50,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:52:50,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:52:50,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:52:50,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (1/1) ... [2023-08-30 15:52:50,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:52:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:52:50,822 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 15:52:50,832 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 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:52:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:52:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:52:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:52:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:52:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:52:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:52:50,852 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 15:52:50,941 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:52:50,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:52:51,320 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:52:51,607 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:52:51,607 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:52:51,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:52:51 BoogieIcfgContainer [2023-08-30 15:52:51,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:52:51,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:52:51,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:52:51,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:52:51,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:52:50" (1/3) ... [2023-08-30 15:52:51,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26772991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:52:51, skipping insertion in model container [2023-08-30 15:52:51,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:52:50" (2/3) ... [2023-08-30 15:52:51,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26772991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:52:51, skipping insertion in model container [2023-08-30 15:52:51,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:52:51" (3/3) ... [2023-08-30 15:52:51,617 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-08-30 15:52:51,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:52:51,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:52:51,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:52:51,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:52:51,738 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:52:51,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 15:52:51,889 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-08-30 15:52:51,889 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:52:51,895 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 15:52:51,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 15:52:51,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 335 transitions, 688 flow [2023-08-30 15:52:51,906 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:52:51,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 15:52:51,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 15:52:51,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 688 flow [2023-08-30 15:52:51,949 INFO L130 PetriNetUnfolder]: 30/335 cut-off events. [2023-08-30 15:52:51,950 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:52:51,951 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 15:52:51,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2023-08-30 15:53:06,794 INFO L134 LiptonReduction]: Checked pairs total: 8688 [2023-08-30 15:53:06,795 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-08-30 15:53:06,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:53:06,808 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;@54489b77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:53:06,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-08-30 15:53:06,810 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:53:06,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:53:06,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:06,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:53:06,812 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 15:53:06,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 47728, now seen corresponding path program 1 times [2023-08-30 15:53:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802786073] [2023-08-30 15:53:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:07,086 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 15:53:07,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802786073] [2023-08-30 15:53:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802786073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:07,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:07,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:53:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195312138] [2023-08-30 15:53:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:07,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:53:07,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:53:07,158 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 15:53:07,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:07,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:53:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:08,139 INFO L130 PetriNetUnfolder]: 7903/10259 cut-off events. [2023-08-30 15:53:08,140 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 15:53:08,149 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 15:53:08,189 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 95 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-08-30 15:53:08,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 448 flow [2023-08-30 15:53:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-08-30 15:53:08,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778523489932886 [2023-08-30 15:53:08,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-08-30 15:53:08,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-08-30 15:53:08,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:08,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-08-30 15:53:08,213 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 15:53:08,219 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 15:53:08,220 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 15:53:08,221 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 1068 transitions. [2023-08-30 15:53:08,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 448 flow [2023-08-30 15:53:08,241 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 15:53:08,243 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 178 flow [2023-08-30 15:53:08,244 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 15:53:08,247 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 15:53:08,248 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 178 flow [2023-08-30 15:53:08,249 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 15:53:08,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:08,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:53:08,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:53:08,250 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 15:53:08,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1480951, now seen corresponding path program 1 times [2023-08-30 15:53:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130746745] [2023-08-30 15:53:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:08,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:08,334 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 15:53:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130746745] [2023-08-30 15:53:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130746745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:08,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:08,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:53:08,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557343673] [2023-08-30 15:53:08,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:08,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:08,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:53:08,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:53:08,359 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 15:53:08,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:08,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:53:08,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:09,210 INFO L130 PetriNetUnfolder]: 7903/10256 cut-off events. [2023-08-30 15:53:09,210 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 15:53:09,214 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 15:53:09,242 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 55 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 15:53:09,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 278 flow [2023-08-30 15:53:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-30 15:53:09,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469798657718121 [2023-08-30 15:53:09,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-30 15:53:09,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-30 15:53:09,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:09,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-30 15:53:09,247 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 15:53:09,250 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 15:53:09,251 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 15:53:09,251 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 178 flow. Second operand 3 states and 999 transitions. [2023-08-30 15:53:09,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 278 flow [2023-08-30 15:53:09,252 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 15:53:09,252 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 156 flow [2023-08-30 15:53:09,253 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 15:53:09,253 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 15:53:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 156 flow [2023-08-30 15:53:09,254 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 15:53:09,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:09,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:53:09,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:53:09,254 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 15:53:09,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:09,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1480949, now seen corresponding path program 1 times [2023-08-30 15:53:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134280762] [2023-08-30 15:53:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:09,321 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 15:53:09,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:09,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134280762] [2023-08-30 15:53:09,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134280762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:09,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690200791] [2023-08-30 15:53:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:09,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:09,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:09,329 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 15:53:09,338 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 15:53:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:09,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:53:09,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:09,453 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 15:53:09,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:09,464 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 15:53:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690200791] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:09,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:53:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913332912] [2023-08-30 15:53:09,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:53:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:53:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:53:09,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 15:53:09,537 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 15:53:09,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:09,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 15:53:09,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:11,627 INFO L130 PetriNetUnfolder]: 19756/25634 cut-off events. [2023-08-30 15:53:11,628 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 15:53:11,641 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 15:53:11,716 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 218 selfloop transitions, 21 changer transitions 0/243 dead transitions. [2023-08-30 15:53:11,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 243 transitions, 1054 flow [2023-08-30 15:53:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:53:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:53:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2138 transitions. [2023-08-30 15:53:11,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-08-30 15:53:11,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2138 transitions. [2023-08-30 15:53:11,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2138 transitions. [2023-08-30 15:53:11,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:11,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2138 transitions. [2023-08-30 15:53:11,724 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 15:53:11,729 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 15:53:11,731 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 15:53:11,731 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 156 flow. Second operand 6 states and 2138 transitions. [2023-08-30 15:53:11,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 243 transitions, 1054 flow [2023-08-30 15:53:11,733 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 15:53:11,735 INFO L231 Difference]: Finished difference. Result has 62 places, 75 transitions, 305 flow [2023-08-30 15:53:11,736 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 15:53:11,736 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-08-30 15:53:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 75 transitions, 305 flow [2023-08-30 15:53:11,738 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 15:53:11,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:11,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:53:11,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:53:11,942 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 15:53:11,943 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 15:53:11,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 45951744, now seen corresponding path program 1 times [2023-08-30 15:53:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318229588] [2023-08-30 15:53:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:12,000 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 15:53:12,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:12,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318229588] [2023-08-30 15:53:12,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318229588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:12,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:12,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:53:12,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145414023] [2023-08-30 15:53:12,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:53:12,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 745 [2023-08-30 15:53:12,039 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 15:53:12,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:12,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 745 [2023-08-30 15:53:12,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:13,917 INFO L130 PetriNetUnfolder]: 19755/25633 cut-off events. [2023-08-30 15:53:13,917 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 15:53:13,934 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 15:53:14,010 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 15:53:14,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 441 flow [2023-08-30 15:53:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-08-30 15:53:14,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425055928411633 [2023-08-30 15:53:14,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-08-30 15:53:14,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-08-30 15:53:14,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:14,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-08-30 15:53:14,015 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 15:53:14,018 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 15:53:14,018 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 15:53:14,019 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 305 flow. Second operand 3 states and 989 transitions. [2023-08-30 15:53:14,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 441 flow [2023-08-30 15:53:14,020 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 15:53:14,021 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 275 flow [2023-08-30 15:53:14,021 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 15:53:14,021 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-30 15:53:14,022 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 275 flow [2023-08-30 15:53:14,022 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 15:53:14,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:14,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:53:14,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:53:14,023 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 15:53:14,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1423279047, now seen corresponding path program 1 times [2023-08-30 15:53:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865950828] [2023-08-30 15:53:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:14,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:14,094 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 15:53:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:14,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865950828] [2023-08-30 15:53:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865950828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:14,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:14,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:53:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238634333] [2023-08-30 15:53:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:14,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:53:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:14,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:53:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:53:14,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 745 [2023-08-30 15:53:14,169 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 15:53:14,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:14,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 745 [2023-08-30 15:53:14,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:15,822 INFO L130 PetriNetUnfolder]: 15805/20511 cut-off events. [2023-08-30 15:53:15,822 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-30 15:53:15,833 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 15:53:15,884 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 57 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-08-30 15:53:15,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 409 flow [2023-08-30 15:53:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:53:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:53:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2023-08-30 15:53:15,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436241610738255 [2023-08-30 15:53:15,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2023-08-30 15:53:15,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2023-08-30 15:53:15,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:15,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2023-08-30 15:53:15,890 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 15:53:15,894 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 15:53:15,895 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 15:53:15,895 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 275 flow. Second operand 4 states and 1300 transitions. [2023-08-30 15:53:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 409 flow [2023-08-30 15:53:15,896 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 15:53:15,897 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 313 flow [2023-08-30 15:53:15,897 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 15:53:15,898 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 15:53:15,898 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 313 flow [2023-08-30 15:53:15,898 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 15:53:15,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:15,898 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:53:15,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:53:15,899 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 15:53:15,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1170711598, now seen corresponding path program 2 times [2023-08-30 15:53:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134491705] [2023-08-30 15:53:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:15,956 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 15:53:15,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:15,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134491705] [2023-08-30 15:53:15,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134491705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:15,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964698718] [2023-08-30 15:53:15,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:53:15,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:15,962 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 15:53:15,990 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 15:53:16,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:53:16,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:53:16,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:53:16,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:16,061 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 15:53:16,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:53:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964698718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:16,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:53:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:53:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679529735] [2023-08-30 15:53:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:53:16,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-08-30 15:53:16,084 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 15:53:16,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:16,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-08-30 15:53:16,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:17,556 INFO L130 PetriNetUnfolder]: 15805/20510 cut-off events. [2023-08-30 15:53:17,556 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 15:53:17,586 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 15:53:17,659 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-08-30 15:53:17,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 439 flow [2023-08-30 15:53:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-08-30 15:53:17,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966442953020136 [2023-08-30 15:53:17,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-08-30 15:53:17,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-08-30 15:53:17,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:17,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-08-30 15:53:17,664 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 15:53:17,667 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 15:53:17,667 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 15:53:17,667 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 313 flow. Second operand 3 states and 1005 transitions. [2023-08-30 15:53:17,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 439 flow [2023-08-30 15:53:17,669 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 15:53:17,670 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 300 flow [2023-08-30 15:53:17,671 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 15:53:17,672 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2023-08-30 15:53:17,672 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 300 flow [2023-08-30 15:53:17,673 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 15:53:17,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:17,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:17,677 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 15:53:17,877 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 15:53:17,877 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 15:53:17,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529539, now seen corresponding path program 1 times [2023-08-30 15:53:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184550196] [2023-08-30 15:53:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:18,132 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 15:53:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184550196] [2023-08-30 15:53:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184550196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024718405] [2023-08-30 15:53:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:18,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:18,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:18,135 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 15:53:18,137 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 15:53:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:18,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 15:53:18,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:18,270 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 15:53:18,290 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 15:53:18,314 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:18,314 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 15:53:18,338 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 15:53:18,347 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 15:53:18,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:18,365 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_208 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_208) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-08-30 15:53:18,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:18,419 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 15:53:18,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:18,431 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 15:53:18,438 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 15:53:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 15:53:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024718405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:18,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:53:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061037136] [2023-08-30 15:53:18,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:18,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:53:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:53:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-08-30 15:53:18,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 15:53:18,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:18,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:18,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 15:53:18,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:20,085 INFO L130 PetriNetUnfolder]: 15805/20506 cut-off events. [2023-08-30 15:53:20,085 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 15:53:20,107 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 15:53:20,166 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-08-30 15:53:20,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 430 flow [2023-08-30 15:53:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:53:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:53:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1655 transitions. [2023-08-30 15:53:20,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024608501118567 [2023-08-30 15:53:20,170 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1655 transitions. [2023-08-30 15:53:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1655 transitions. [2023-08-30 15:53:20,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:20,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1655 transitions. [2023-08-30 15:53:20,173 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 15:53:20,177 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 15:53:20,177 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 15:53:20,177 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 300 flow. Second operand 6 states and 1655 transitions. [2023-08-30 15:53:20,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 430 flow [2023-08-30 15:53:20,179 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 15:53:20,179 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 312 flow [2023-08-30 15:53:20,180 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 15:53:20,180 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 15:53:20,180 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 312 flow [2023-08-30 15:53:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:20,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:20,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:20,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:53:20,385 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 15:53:20,385 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 15:53:20,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529549, now seen corresponding path program 1 times [2023-08-30 15:53:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:20,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350811646] [2023-08-30 15:53:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:20,745 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 15:53:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350811646] [2023-08-30 15:53:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350811646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323318843] [2023-08-30 15:53:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:20,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:20,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:20,748 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 15:53:20,750 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 15:53:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:20,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 15:53:20,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:20,891 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 15:53:20,892 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 15:53:20,912 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 15:53:20,932 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:53:20,933 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 15:53:20,956 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 15:53:20,976 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:20,976 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 15:53:20,984 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 15:53:20,988 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 15:53:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:21,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:21,154 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 15:53:21,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:21,161 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 15:53:21,164 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 48 treesize of output 44 [2023-08-30 15:53:21,169 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 15:53:21,250 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 15:53:21,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323318843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:21,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 15:53:21,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806192306] [2023-08-30 15:53:21,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:21,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 15:53:21,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:21,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 15:53:21,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=191, Unknown=2, NotChecked=0, Total=240 [2023-08-30 15:53:23,297 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 15:53:25,378 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 15:53:25,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 15:53:25,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 312 flow. Second operand has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:25,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:25,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 15:53:25,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:27,053 INFO L130 PetriNetUnfolder]: 15805/20502 cut-off events. [2023-08-30 15:53:27,053 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 15:53:27,072 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 110435 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 15:53:27,128 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2023-08-30 15:53:27,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 440 flow [2023-08-30 15:53:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:53:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:53:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-08-30 15:53:27,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002237136465327 [2023-08-30 15:53:27,132 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-08-30 15:53:27,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-08-30 15:53:27,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:27,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-08-30 15:53:27,140 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 15:53:27,144 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 15:53:27,144 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 15:53:27,144 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 312 flow. Second operand 6 states and 1654 transitions. [2023-08-30 15:53:27,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 440 flow [2023-08-30 15:53:27,145 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 15:53:27,146 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 307 flow [2023-08-30 15:53:27,146 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 15:53:27,148 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 15:53:27,148 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 307 flow [2023-08-30 15:53:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:27,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:27,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:27,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:53:27,353 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 15:53:27,354 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 15:53:27,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529548, now seen corresponding path program 1 times [2023-08-30 15:53:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055269388] [2023-08-30 15:53:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:27,656 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 15:53:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055269388] [2023-08-30 15:53:27,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055269388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658722227] [2023-08-30 15:53:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:27,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:27,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:27,658 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 15:53:27,660 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 15:53:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:27,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-30 15:53:27,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:27,799 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 15:53:27,800 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 15:53:27,829 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 15:53:27,861 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:53:27,861 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 15:53:27,886 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 15:53:27,916 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:27,916 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 15:53:27,939 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 15:53:27,952 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 15:53:27,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:28,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:28,168 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 15:53:28,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:28,177 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 15:53:28,182 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 15:53:28,187 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 15:53:28,274 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 15:53:28,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658722227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:28,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:28,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:53:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530530030] [2023-08-30 15:53:28,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:28,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:53:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:53:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=269, Unknown=6, NotChecked=0, Total=342 [2023-08-30 15:53:30,330 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 15:53:32,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:53:34,377 WARN L539 Checker$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 15:53:35,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 745 [2023-08-30 15:53:35,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 307 flow. Second operand has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:35,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:35,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 745 [2023-08-30 15:53:35,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:36,756 INFO L130 PetriNetUnfolder]: 15805/20498 cut-off events. [2023-08-30 15:53:36,756 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-08-30 15:53:36,767 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 110491 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 15:53:36,815 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2023-08-30 15:53:36,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 433 flow [2023-08-30 15:53:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:53:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:53:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2023-08-30 15:53:36,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35369127516778526 [2023-08-30 15:53:36,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2023-08-30 15:53:36,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2023-08-30 15:53:36,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:36,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2023-08-30 15:53:36,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:36,825 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 15:53:36,825 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 15:53:36,825 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 307 flow. Second operand 6 states and 1581 transitions. [2023-08-30 15:53:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 433 flow [2023-08-30 15:53:36,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:53:36,827 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 325 flow [2023-08-30 15:53:36,827 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=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-30 15:53:36,828 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-30 15:53:36,828 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 325 flow [2023-08-30 15:53:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:36,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 15:53:37,033 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 15:53:37,035 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 15:53:37,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529536, now seen corresponding path program 1 times [2023-08-30 15:53:37,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:37,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430275669] [2023-08-30 15:53:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:37,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:37,190 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 15:53:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430275669] [2023-08-30 15:53:37,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430275669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942205526] [2023-08-30 15:53:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:37,192 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 15:53:37,194 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 15:53:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 15:53:37,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:37,295 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 15:53:37,304 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 15:53:37,318 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:37,319 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 15:53:37,333 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 15:53:37,341 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 15:53:37,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:37,352 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_374 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_374) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2023-08-30 15:53:37,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:37,373 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 15:53:37,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:37,379 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 15:53:37,383 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 15:53:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 15:53:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942205526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:37,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:37,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:53:37,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227592294] [2023-08-30 15:53:37,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:37,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:53:37,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:53:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-08-30 15:53:37,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 15:53:37,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:37,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:37,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 15:53:37,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:38,821 INFO L130 PetriNetUnfolder]: 15805/20494 cut-off events. [2023-08-30 15:53:38,822 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2023-08-30 15:53:38,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41107 conditions, 20494 events. 15805/20494 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 110363 event pairs, 8416 based on Foata normal form. 4/8450 useless extension candidates. Maximal degree in co-relation 41092. Up to 20165 conditions per place. [2023-08-30 15:53:38,896 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 51 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2023-08-30 15:53:38,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 449 flow [2023-08-30 15:53:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:53:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:53:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-08-30 15:53:38,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36957494407158836 [2023-08-30 15:53:38,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-08-30 15:53:38,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-08-30 15:53:38,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:38,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-08-30 15:53:38,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:38,906 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 15:53:38,906 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 15:53:38,907 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 325 flow. Second operand 6 states and 1652 transitions. [2023-08-30 15:53:38,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 449 flow [2023-08-30 15:53:38,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 409 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 15:53:38,908 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 307 flow [2023-08-30 15:53:38,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-30 15:53:38,909 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 15:53:38,909 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 307 flow [2023-08-30 15:53:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:38,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:38,910 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:53:38,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:53:39,116 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 15:53:39,118 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 15:53:39,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash 955798492, now seen corresponding path program 1 times [2023-08-30 15:53:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471857516] [2023-08-30 15:53:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:39,206 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 15:53:39,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471857516] [2023-08-30 15:53:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471857516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502247708] [2023-08-30 15:53:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:39,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:39,209 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 15:53:39,211 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 15:53:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:39,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:53:39,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:39,351 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 15:53:39,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:39,396 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 15:53:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502247708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:39,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:53:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637857344] [2023-08-30 15:53:39,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:39,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:53:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:53:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:53:39,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 745 [2023-08-30 15:53:39,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 307 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 15:53:39,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:39,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 745 [2023-08-30 15:53:39,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:41,386 INFO L130 PetriNetUnfolder]: 18831/24440 cut-off events. [2023-08-30 15:53:41,386 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-08-30 15:53:41,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49010 conditions, 24440 events. 18831/24440 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 133313 event pairs, 10030 based on Foata normal form. 2/10228 useless extension candidates. Maximal degree in co-relation 48996. Up to 15123 conditions per place. [2023-08-30 15:53:41,472 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 119 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2023-08-30 15:53:41,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 145 transitions, 788 flow [2023-08-30 15:53:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:53:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:53:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2023-08-30 15:53:41,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818791946308726 [2023-08-30 15:53:41,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2023-08-30 15:53:41,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2023-08-30 15:53:41,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:41,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2023-08-30 15:53:41,481 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 15:53:41,485 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 15:53:41,486 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 15:53:41,486 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 307 flow. Second operand 9 states and 2871 transitions. [2023-08-30 15:53:41,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 145 transitions, 788 flow [2023-08-30 15:53:41,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:53:41,488 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 368 flow [2023-08-30 15:53:41,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 15:53:41,489 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-30 15:53:41,489 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 368 flow [2023-08-30 15:53:41,490 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 15:53:41,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:41,490 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:53:41,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:53:41,694 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 15:53:41,694 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 15:53:41,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1575423709, now seen corresponding path program 2 times [2023-08-30 15:53:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:41,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528429954] [2023-08-30 15:53:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:41,755 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 15:53:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:41,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528429954] [2023-08-30 15:53:41,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528429954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:41,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408800380] [2023-08-30 15:53:41,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:53:41,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:41,756 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 15:53:41,758 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 15:53:41,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:53:41,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:53:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:53:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:41,872 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 15:53:41,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:53:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408800380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:41,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:53:41,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 15:53:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589345388] [2023-08-30 15:53:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:41,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:53:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:53:41,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:53:41,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 745 [2023-08-30 15:53:41,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 368 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 15:53:41,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:41,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 745 [2023-08-30 15:53:41,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:43,308 INFO L130 PetriNetUnfolder]: 17448/22677 cut-off events. [2023-08-30 15:53:43,308 INFO L131 PetriNetUnfolder]: For 2215/2215 co-relation queries the response was YES. [2023-08-30 15:53:43,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45482 conditions, 22677 events. 17448/22677 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 122533 event pairs, 9295 based on Foata normal form. 695/10232 useless extension candidates. Maximal degree in co-relation 45466. Up to 22337 conditions per place. [2023-08-30 15:53:43,376 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 65 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 15:53:43,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 470 flow [2023-08-30 15:53:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-08-30 15:53:43,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474272930648767 [2023-08-30 15:53:43,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-08-30 15:53:43,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-08-30 15:53:43,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:43,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-08-30 15:53:43,380 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 15:53:43,381 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 15:53:43,381 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 15:53:43,382 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 368 flow. Second operand 3 states and 994 transitions. [2023-08-30 15:53:43,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 470 flow [2023-08-30 15:53:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 407 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 15:53:43,383 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 277 flow [2023-08-30 15:53:43,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=62, 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=277, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-30 15:53:43,384 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-08-30 15:53:43,384 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 277 flow [2023-08-30 15:53:43,384 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 15:53:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:43,397 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 15:53:43,588 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 15:53:43,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:43,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 282061342, now seen corresponding path program 1 times [2023-08-30 15:53:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306974898] [2023-08-30 15:53:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:43,636 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 15:53:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306974898] [2023-08-30 15:53:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306974898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:43,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:53:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726591357] [2023-08-30 15:53:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:53:43,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 15:53:43,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 277 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 15:53:43,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:43,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 15:53:43,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:45,378 INFO L130 PetriNetUnfolder]: 26243/35227 cut-off events. [2023-08-30 15:53:45,378 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2023-08-30 15:53:45,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71033 conditions, 35227 events. 26243/35227 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 207332 event pairs, 10010 based on Foata normal form. 0/16872 useless extension candidates. Maximal degree in co-relation 71021. Up to 19928 conditions per place. [2023-08-30 15:53:45,484 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 97 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 15:53:45,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 543 flow [2023-08-30 15:53:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-30 15:53:45,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-30 15:53:45,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-30 15:53:45,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-30 15:53:45,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:45,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-30 15:53:45,487 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 15:53:45,489 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 15:53:45,489 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 15:53:45,489 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 277 flow. Second operand 3 states and 1043 transitions. [2023-08-30 15:53:45,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 543 flow [2023-08-30 15:53:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:53:45,491 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 288 flow [2023-08-30 15:53:45,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-08-30 15:53:45,491 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 15:53:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 288 flow [2023-08-30 15:53:45,492 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 15:53:45,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:45,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:53:45,492 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:45,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 282061338, now seen corresponding path program 1 times [2023-08-30 15:53:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019221474] [2023-08-30 15:53:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:45,594 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 15:53:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019221474] [2023-08-30 15:53:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019221474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97735988] [2023-08-30 15:53:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:45,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:45,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:45,596 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 15:53:45,597 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 15:53:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:45,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:53:45,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:45,750 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 15:53:45,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:45,783 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 15:53:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97735988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:45,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:45,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 15:53:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998825301] [2023-08-30 15:53:45,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:53:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:53:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:53:46,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:53:46,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 288 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 15:53:46,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:46,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:53:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:47,276 INFO L130 PetriNetUnfolder]: 16969/23187 cut-off events. [2023-08-30 15:53:47,276 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2023-08-30 15:53:47,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48638 conditions, 23187 events. 16969/23187 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 135039 event pairs, 8841 based on Foata normal form. 248/12743 useless extension candidates. Maximal degree in co-relation 48625. Up to 16918 conditions per place. [2023-08-30 15:53:47,358 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 116 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2023-08-30 15:53:47,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 713 flow [2023-08-30 15:53:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:53:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:53:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2531 transitions. [2023-08-30 15:53:47,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42466442953020134 [2023-08-30 15:53:47,362 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2531 transitions. [2023-08-30 15:53:47,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2531 transitions. [2023-08-30 15:53:47,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:47,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2531 transitions. [2023-08-30 15:53:47,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 316.375) internal successors, (2531), 8 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:47,369 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 15:53:47,370 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 15:53:47,370 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 288 flow. Second operand 8 states and 2531 transitions. [2023-08-30 15:53:47,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 713 flow [2023-08-30 15:53:47,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:53:47,376 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 365 flow [2023-08-30 15:53:47,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 15:53:47,377 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-30 15:53:47,377 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 365 flow [2023-08-30 15:53:47,377 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 15:53:47,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:47,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:47,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:53:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:53:47,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:47,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -154369339, now seen corresponding path program 1 times [2023-08-30 15:53:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751867116] [2023-08-30 15:53:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:47,662 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 15:53:47,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751867116] [2023-08-30 15:53:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751867116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112573671] [2023-08-30 15:53:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:47,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:47,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:47,664 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 15:53:47,666 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 15:53:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:47,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:53:47,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:47,815 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 15:53:47,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:47,852 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 15:53:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112573671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:47,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:47,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:53:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208909496] [2023-08-30 15:53:47,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:47,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:53:47,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:53:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:53:48,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:53:48,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 365 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 15:53:48,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:48,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:53:48,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:49,266 INFO L130 PetriNetUnfolder]: 13627/18958 cut-off events. [2023-08-30 15:53:49,267 INFO L131 PetriNetUnfolder]: For 2946/3588 co-relation queries the response was YES. [2023-08-30 15:53:49,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43889 conditions, 18958 events. 13627/18958 cut-off events. For 2946/3588 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 117671 event pairs, 7427 based on Foata normal form. 642/11472 useless extension candidates. Maximal degree in co-relation 43872. Up to 14011 conditions per place. [2023-08-30 15:53:49,327 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 102 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2023-08-30 15:53:49,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 750 flow [2023-08-30 15:53:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:53:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:53:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2512 transitions. [2023-08-30 15:53:49,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214765100671141 [2023-08-30 15:53:49,331 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2512 transitions. [2023-08-30 15:53:49,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2512 transitions. [2023-08-30 15:53:49,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:49,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2512 transitions. [2023-08-30 15:53:49,334 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 15:53:49,337 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 15:53:49,337 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 15:53:49,337 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 365 flow. Second operand 8 states and 2512 transitions. [2023-08-30 15:53:49,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 750 flow [2023-08-30 15:53:49,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 726 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:53:49,342 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 410 flow [2023-08-30 15:53:49,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-30 15:53:49,342 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 15:53:49,342 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 410 flow [2023-08-30 15:53:49,343 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 15:53:49,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:49,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:49,351 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 15:53:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:53:49,543 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:49,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436720, now seen corresponding path program 1 times [2023-08-30 15:53:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230497174] [2023-08-30 15:53:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:49,576 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 15:53:49,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:49,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230497174] [2023-08-30 15:53:49,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230497174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:53:49,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:53:49,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:53:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97032144] [2023-08-30 15:53:49,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:53:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:53:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:49,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:53:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:53:49,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 15:53:49,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 410 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 15:53:49,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:49,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 15:53:49,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:51,212 INFO L130 PetriNetUnfolder]: 20291/28006 cut-off events. [2023-08-30 15:53:51,212 INFO L131 PetriNetUnfolder]: For 7533/8465 co-relation queries the response was YES. [2023-08-30 15:53:51,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69729 conditions, 28006 events. 20291/28006 cut-off events. For 7533/8465 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 179947 event pairs, 10260 based on Foata normal form. 932/19093 useless extension candidates. Maximal degree in co-relation 69708. Up to 18987 conditions per place. [2023-08-30 15:53:51,351 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 100 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 15:53:51,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 709 flow [2023-08-30 15:53:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:53:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:53:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-30 15:53:51,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657718120805369 [2023-08-30 15:53:51,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-30 15:53:51,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-30 15:53:51,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:51,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-30 15:53:51,355 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 15:53:51,356 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 15:53:51,356 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 15:53:51,356 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 410 flow. Second operand 3 states and 1041 transitions. [2023-08-30 15:53:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 709 flow [2023-08-30 15:53:51,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 685 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:53:51,373 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 400 flow [2023-08-30 15:53:51,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-30 15:53:51,373 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 15:53:51,373 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 400 flow [2023-08-30 15:53:51,374 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 15:53:51,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:51,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:51,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:53:51,374 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:51,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 462161766, now seen corresponding path program 2 times [2023-08-30 15:53:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767758156] [2023-08-30 15:53:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:51,934 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 15:53:51,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767758156] [2023-08-30 15:53:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767758156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041454262] [2023-08-30 15:53:51,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:53:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:51,936 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 15:53:51,937 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 15:53:52,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:53:52,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:53:52,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:53:52,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:52,125 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 15:53:52,181 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 15:53:52,223 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:52,224 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 15:53:52,259 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 15:53:52,271 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 15:53:52,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:53:52,300 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 15:53:52,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:53:52,328 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 15:53:52,336 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 15:53:52,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:52,428 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_ArrVal_731 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_731) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_732) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_733) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-08-30 15:53:52,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:52,468 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 15:53:52,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:52,476 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 1105 treesize of output 1057 [2023-08-30 15:53:52,489 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 55 [2023-08-30 15:53:52,494 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 55 treesize of output 47 [2023-08-30 15:53:52,499 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 15:53:52,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:52,628 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 15:53:52,667 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 15:53:52,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041454262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:52,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-30 15:53:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289705479] [2023-08-30 15:53:52,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:52,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 15:53:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 15:53:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=693, Unknown=9, NotChecked=54, Total=870 [2023-08-30 15:53:52,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 745 [2023-08-30 15:53:52,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 400 flow. Second operand has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:52,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:52,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 745 [2023-08-30 15:53:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:53:56,865 INFO L130 PetriNetUnfolder]: 29297/40987 cut-off events. [2023-08-30 15:53:56,865 INFO L131 PetriNetUnfolder]: For 13332/13447 co-relation queries the response was YES. [2023-08-30 15:53:56,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105484 conditions, 40987 events. 29297/40987 cut-off events. For 13332/13447 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 272326 event pairs, 4245 based on Foata normal form. 115/26259 useless extension candidates. Maximal degree in co-relation 105462. Up to 16216 conditions per place. [2023-08-30 15:53:57,016 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 207 selfloop transitions, 54 changer transitions 0/265 dead transitions. [2023-08-30 15:53:57,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 265 transitions, 1512 flow [2023-08-30 15:53:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 15:53:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 15:53:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5746 transitions. [2023-08-30 15:53:57,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33533702947184124 [2023-08-30 15:53:57,024 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5746 transitions. [2023-08-30 15:53:57,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5746 transitions. [2023-08-30 15:53:57,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:53:57,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5746 transitions. [2023-08-30 15:53:57,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 249.82608695652175) internal successors, (5746), 23 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:57,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:57,039 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:57,039 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 400 flow. Second operand 23 states and 5746 transitions. [2023-08-30 15:53:57,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 265 transitions, 1512 flow [2023-08-30 15:53:57,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 1506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:53:57,075 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 701 flow [2023-08-30 15:53:57,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=701, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2023-08-30 15:53:57,075 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-08-30 15:53:57,075 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 701 flow [2023-08-30 15:53:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:53:57,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:53:57,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:53:57,081 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 15:53:57,280 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 15:53:57,280 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:53:57,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:53:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 462161765, now seen corresponding path program 1 times [2023-08-30 15:53:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:53:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653005304] [2023-08-30 15:53:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:53:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:57,684 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 15:53:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:53:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653005304] [2023-08-30 15:53:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653005304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:53:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589118017] [2023-08-30 15:53:57,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:53:57,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:53:57,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:53:57,686 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 15:53:57,687 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 15:53:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:53:57,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:53:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:53:57,858 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 15:53:57,904 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 15:53:57,940 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:53:57,940 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 15:53:57,965 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 15:53:57,979 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 15:53:58,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:53:58,010 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 15:53:58,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:53:58,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:53:58,049 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 15:53:58,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:53:58,083 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:53:58,090 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_807 (Array Int Int)) (v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_807) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:53:58,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:58,153 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 15:53:58,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:58,159 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 311 treesize of output 299 [2023-08-30 15:53:58,166 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 138 treesize of output 122 [2023-08-30 15:53:58,171 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 55 [2023-08-30 15:53:58,175 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 54 [2023-08-30 15:53:58,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:53:58,333 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 15:53:58,368 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 15:53:58,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589118017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:53:58,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:53:58,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-08-30 15:53:58,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065810529] [2023-08-30 15:53:58,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:53:58,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 15:53:58,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:53:58,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 15:53:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=8, NotChecked=94, Total=702 [2023-08-30 15:53:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-08-30 15:53:58,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 701 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 15:53:58,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:53:58,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-08-30 15:53:58,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:01,838 INFO L130 PetriNetUnfolder]: 29693/41359 cut-off events. [2023-08-30 15:54:01,838 INFO L131 PetriNetUnfolder]: For 29229/29346 co-relation queries the response was YES. [2023-08-30 15:54:01,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113616 conditions, 41359 events. 29693/41359 cut-off events. For 29229/29346 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 273854 event pairs, 5903 based on Foata normal form. 117/27933 useless extension candidates. Maximal degree in co-relation 113588. Up to 24768 conditions per place. [2023-08-30 15:54:02,038 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 131 selfloop transitions, 51 changer transitions 0/186 dead transitions. [2023-08-30 15:54:02,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 186 transitions, 1285 flow [2023-08-30 15:54:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:54:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:54:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3499 transitions. [2023-08-30 15:54:02,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3612803304078472 [2023-08-30 15:54:02,041 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3499 transitions. [2023-08-30 15:54:02,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3499 transitions. [2023-08-30 15:54:02,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:02,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3499 transitions. [2023-08-30 15:54:02,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.15384615384613) internal successors, (3499), 13 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:02,050 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 15:54:02,050 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 15:54:02,050 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 701 flow. Second operand 13 states and 3499 transitions. [2023-08-30 15:54:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 186 transitions, 1285 flow [2023-08-30 15:54:02,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 186 transitions, 1246 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 15:54:02,089 INFO L231 Difference]: Finished difference. Result has 117 places, 113 transitions, 778 flow [2023-08-30 15:54:02,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=778, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2023-08-30 15:54:02,089 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 49 predicate places. [2023-08-30 15:54:02,089 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 778 flow [2023-08-30 15:54:02,090 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 15:54:02,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:02,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:54:02,095 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 15:54:02,292 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 15:54:02,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:02,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 462161769, now seen corresponding path program 1 times [2023-08-30 15:54:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:02,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536380911] [2023-08-30 15:54:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:02,881 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 15:54:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536380911] [2023-08-30 15:54:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536380911] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:54:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113352529] [2023-08-30 15:54:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:54:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:02,882 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 15:54:02,883 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 15:54:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 15:54:03,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:54:03,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:03,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:03,048 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:54:03,048 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 15:54:03,100 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:54:03,143 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:54:03,143 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 15:54:03,179 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 15:54:03,192 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 15:54:03,237 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:54:03,237 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 15:54:03,273 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 15:54:03,287 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 15:54:03,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:03,316 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 15:54:03,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:03,345 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 15:54:03,353 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 15:54:03,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:54:03,388 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-08-30 15:54:03,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:03,581 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 15:54:03,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:03,593 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 15:54:03,642 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 258 treesize of output 250 [2023-08-30 15:54:03,651 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 250 treesize of output 234 [2023-08-30 15:54:03,661 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 118 treesize of output 114 [2023-08-30 15:54:03,670 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 230 treesize of output 198 [2023-08-30 15:54:03,934 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 15:54:03,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113352529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:54:03,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:54:03,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-30 15:54:03,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968187666] [2023-08-30 15:54:03,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:54:03,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:54:03,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:54:03,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=736, Unknown=10, NotChecked=56, Total=930 [2023-08-30 15:54:04,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 745 [2023-08-30 15:54:04,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 778 flow. Second operand has 31 states, 31 states have (on average 260.35483870967744) internal successors, (8071), 31 states have internal predecessors, (8071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:04,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:04,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 745 [2023-08-30 15:54:04,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:07,778 INFO L130 PetriNetUnfolder]: 28772/39916 cut-off events. [2023-08-30 15:54:07,779 INFO L131 PetriNetUnfolder]: For 31843/31964 co-relation queries the response was YES. [2023-08-30 15:54:07,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114174 conditions, 39916 events. 28772/39916 cut-off events. For 31843/31964 co-relation queries the response was YES. Maximal size of possible extension queue 2234. Compared 259874 event pairs, 9212 based on Foata normal form. 121/27814 useless extension candidates. Maximal degree in co-relation 114146. Up to 34786 conditions per place. [2023-08-30 15:54:08,022 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 125 selfloop transitions, 44 changer transitions 0/173 dead transitions. [2023-08-30 15:54:08,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 173 transitions, 1316 flow [2023-08-30 15:54:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:54:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:54:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3234 transitions. [2023-08-30 15:54:08,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361744966442953 [2023-08-30 15:54:08,025 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3234 transitions. [2023-08-30 15:54:08,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3234 transitions. [2023-08-30 15:54:08,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:08,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3234 transitions. [2023-08-30 15:54:08,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.5) internal successors, (3234), 12 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:08,032 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 15:54:08,033 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 15:54:08,033 INFO L175 Difference]: Start difference. First operand has 117 places, 113 transitions, 778 flow. Second operand 12 states and 3234 transitions. [2023-08-30 15:54:08,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 173 transitions, 1316 flow [2023-08-30 15:54:08,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 1259 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 15:54:08,102 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 875 flow [2023-08-30 15:54:08,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=875, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2023-08-30 15:54:08,102 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 54 predicate places. [2023-08-30 15:54:08,102 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 875 flow [2023-08-30 15:54:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 260.35483870967744) internal successors, (8071), 31 states have internal predecessors, (8071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:08,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:08,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:54:08,109 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 15:54:08,303 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 15:54:08,304 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:08,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 462161768, now seen corresponding path program 1 times [2023-08-30 15:54:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772983001] [2023-08-30 15:54:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:08,814 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 15:54:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772983001] [2023-08-30 15:54:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772983001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:54:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217106560] [2023-08-30 15:54:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:54:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:08,817 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 15:54:08,819 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 15:54:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:08,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 15:54:08,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:54:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:09,004 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:54:09,004 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 15:54:09,054 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 13 treesize of output 9 [2023-08-30 15:54:09,102 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:54:09,102 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 15:54:09,134 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 18 treesize of output 20 [2023-08-30 15:54:09,155 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 18 treesize of output 20 [2023-08-30 15:54:09,173 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:54:09,173 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 15:54:09,209 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 18 treesize of output 20 [2023-08-30 15:54:09,224 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 18 treesize of output 20 [2023-08-30 15:54:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:09,256 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 18 treesize of output 20 [2023-08-30 15:54:09,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:09,290 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 18 treesize of output 20 [2023-08-30 15:54:09,334 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 15:54:09,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:54:13,480 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse3 0) (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2023-08-30 15:54:13,517 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_969 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse0 0) (< 4294967295 .cse0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((v_ArrVal_969 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (< .cse3 0))))))) is different from false [2023-08-30 15:54:13,541 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_968 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_968) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (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_968 (Array Int Int)) (v_ArrVal_969 (Array Int Int)) (~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_968) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_969) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (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 15:54:14,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:14,392 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 15:54:14,626 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:14,629 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 3167629 treesize of output 3118429 [2023-08-30 15:54:15,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:15,782 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 15:54:15,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:15,864 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 15:54:15,948 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:15,949 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 15:54:16,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:16,044 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 15:54:16,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:16,134 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 15:54:16,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:16,226 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 4728 [2023-08-30 15:54:16,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:16,319 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 4719 treesize of output 4624 [2023-08-30 15:54:16,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:54:16,415 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 4615 treesize of output 4488 [2023-08-30 15:54:23,036 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 15:54:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217106560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:54:23,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:54:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2023-08-30 15:54:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711755993] [2023-08-30 15:54:23,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:54:23,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:54:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:54:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=655, Unknown=6, NotChecked=162, Total=930 [2023-08-30 15:54:23,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 15:54:23,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 875 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 15:54:23,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:23,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 15:54:23,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:26,165 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 15:54:28,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:30,207 WARN L539 Checker$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 15:54:32,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:34,240 WARN L539 Checker$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 15:54:36,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:38,330 WARN L539 Checker$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 15:54:40,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:43,100 WARN L539 Checker$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 15:54:45,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:47,211 WARN L539 Checker$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 15:54:49,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:51,305 WARN L539 Checker$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 15:54:53,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:54:55,375 WARN L539 Checker$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 15:54:57,613 INFO L130 PetriNetUnfolder]: 27784/38396 cut-off events. [2023-08-30 15:54:57,613 INFO L131 PetriNetUnfolder]: For 39900/40019 co-relation queries the response was YES. [2023-08-30 15:54:57,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111843 conditions, 38396 events. 27784/38396 cut-off events. For 39900/40019 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 246216 event pairs, 9152 based on Foata normal form. 143/27864 useless extension candidates. Maximal degree in co-relation 111813. Up to 33346 conditions per place. [2023-08-30 15:54:57,823 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 127 selfloop transitions, 39 changer transitions 0/170 dead transitions. [2023-08-30 15:54:57,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 170 transitions, 1371 flow [2023-08-30 15:54:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:54:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:54:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2680 transitions. [2023-08-30 15:54:57,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597315436241611 [2023-08-30 15:54:57,826 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2680 transitions. [2023-08-30 15:54:57,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2680 transitions. [2023-08-30 15:54:57,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:57,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2680 transitions. [2023-08-30 15:54:57,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.0) internal successors, (2680), 10 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:57,832 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 15:54:57,833 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 15:54:57,833 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 875 flow. Second operand 10 states and 2680 transitions. [2023-08-30 15:54:57,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 170 transitions, 1371 flow [2023-08-30 15:54:57,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 170 transitions, 1338 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 15:54:57,897 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 928 flow [2023-08-30 15:54:57,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=928, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2023-08-30 15:54:57,898 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 59 predicate places. [2023-08-30 15:54:57,898 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 928 flow [2023-08-30 15:54:57,899 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 15:54:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:57,899 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:54:57,912 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 15:54:58,104 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 15:54:58,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:54:58,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1442118294, now seen corresponding path program 1 times [2023-08-30 15:54:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:58,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920332756] [2023-08-30 15:54:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,580 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 15:54:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920332756] [2023-08-30 15:54:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920332756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:54:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816309767] [2023-08-30 15:54:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:54:58,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:58,582 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 15:54:58,584 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 15:54:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:54:58,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:54:58,791 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 15:54:58,855 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 15:54:58,903 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:54:58,903 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 15:54:58,939 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 15:54:58,958 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 14 treesize of output 16 [2023-08-30 15:54:58,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:58,990 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 15:54:59,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:59,023 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 15:54:59,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:54:59,069 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 15:54:59,071 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 15:54:59,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:01,297 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1049 (Array Int Int)) (v_ArrVal_1048 (Array Int Int)) (v_ArrVal_1050 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1048) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1049) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1050) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-08-30 15:55:01,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:01,387 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 15:55:01,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:01,396 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 4385 treesize of output 4289 [2023-08-30 15:55:01,424 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 15:55:01,428 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 254 treesize of output 222 [2023-08-30 15:55:01,433 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 107 treesize of output 99 [2023-08-30 15:55:01,439 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 114 treesize of output 98 [2023-08-30 15:55:01,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:01,646 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 15:55:01,743 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 15:55:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816309767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:01,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:01,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 29 [2023-08-30 15:55:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468817389] [2023-08-30 15:55:01,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:01,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 15:55:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 15:55:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=728, Unknown=24, NotChecked=56, Total=930 [2023-08-30 15:55:01,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 15:55:01,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 928 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 15:55:01,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:01,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 15:55:01,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:05,501 INFO L130 PetriNetUnfolder]: 26472/36580 cut-off events. [2023-08-30 15:55:05,502 INFO L131 PetriNetUnfolder]: For 44720/44838 co-relation queries the response was YES. [2023-08-30 15:55:05,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107065 conditions, 36580 events. 26472/36580 cut-off events. For 44720/44838 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 234737 event pairs, 5924 based on Foata normal form. 628/27174 useless extension candidates. Maximal degree in co-relation 107034. Up to 14356 conditions per place. [2023-08-30 15:55:05,653 INFO L137 encePairwiseOnDemand]: 732/745 looper letters, 177 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2023-08-30 15:55:05,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 226 transitions, 1717 flow [2023-08-30 15:55:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 15:55:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 15:55:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2993 transitions. [2023-08-30 15:55:05,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3652226967663209 [2023-08-30 15:55:05,656 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2993 transitions. [2023-08-30 15:55:05,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2993 transitions. [2023-08-30 15:55:05,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:05,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2993 transitions. [2023-08-30 15:55:05,659 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 15:55:05,663 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 15:55:05,663 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 15:55:05,663 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 928 flow. Second operand 11 states and 2993 transitions. [2023-08-30 15:55:05,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 226 transitions, 1717 flow [2023-08-30 15:55:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 226 transitions, 1674 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:55:05,749 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 1087 flow [2023-08-30 15:55:05,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1087, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2023-08-30 15:55:05,750 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 67 predicate places. [2023-08-30 15:55:05,750 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 1087 flow [2023-08-30 15:55:05,751 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 15:55:05,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:05,751 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:05,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:05,956 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 15:55:05,956 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:55:05,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416826, now seen corresponding path program 1 times [2023-08-30 15:55:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486557021] [2023-08-30 15:55:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:06,703 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 15:55:06,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:06,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486557021] [2023-08-30 15:55:06,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486557021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:06,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497846183] [2023-08-30 15:55:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:06,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:06,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:06,705 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 15:55:06,707 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 15:55:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:06,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:55:06,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:06,900 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 15:55:06,901 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 15:55:06,956 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 13 treesize of output 9 [2023-08-30 15:55:07,004 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:55:07,004 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 15:55:07,055 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 18 treesize of output 20 [2023-08-30 15:55:07,070 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 18 treesize of output 20 [2023-08-30 15:55:07,099 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:55:07,099 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 15:55:07,144 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 18 treesize of output 20 [2023-08-30 15:55:07,157 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 18 treesize of output 20 [2023-08-30 15:55:07,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:07,195 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 18 treesize of output 20 [2023-08-30 15:55:07,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:07,236 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 18 treesize of output 20 [2023-08-30 15:55:07,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:55:07,271 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 18 treesize of output 20 [2023-08-30 15:55:07,319 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 15:55:07,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:11,462 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1136 (Array Int Int)) (~B~0.offset Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (let ((.cse2 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) 2147483648 .cse2)) (< .cse2 0) (< 0 .cse2))))) (forall ((v_ArrVal_1136 (Array Int Int)) (~B~0.offset Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (let ((.cse4 (select (select .cse3 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) 2147483648 .cse4)) (< 4294967295 .cse4) (<= .cse4 0))))))) is different from false [2023-08-30 15:55:11,502 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse0 0) (< 0 .cse0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (<= .cse3 0))))))) is different from false [2023-08-30 15:55:11,540 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (v_ArrVal_1134 (Array Int Int)) (~B~0.offset Int)) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1134) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (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)) (< .cse2 0) (< 0 .cse2))))) (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (v_ArrVal_1134 (Array Int Int)) (~B~0.offset Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1134) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1135) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1136))) (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)) (<= .cse4 0) (< 4294967295 .cse4))))))) is different from false [2023-08-30 15:55:16,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:16,830 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 15:55:17,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:17,034 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 113577005 treesize of output 112692269 [2023-08-30 15:55:26,253 WARN L222 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 6112 DAG size of output: 783 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 15:55:26,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:26,284 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 24456 [2023-08-30 15:55:26,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:26,565 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 24447 treesize of output 24192 [2023-08-30 15:55:26,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:26,850 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 24183 treesize of output 23992 [2023-08-30 15:55:27,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:27,138 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 23983 treesize of output 23464 [2023-08-30 15:55:27,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:27,453 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 23455 treesize of output 21352 [2023-08-30 15:55:27,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:27,745 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 21088 [2023-08-30 15:55:28,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:28,041 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 21079 treesize of output 20888 [2023-08-30 15:55:28,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:28,342 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 20879 treesize of output 20360 [2023-08-30 15:55:28,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:28,647 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 20351 treesize of output 18248 [2023-08-30 15:55:28,952 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:55:28,953 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 18239 treesize of output 17192 [2023-08-30 15:56:26,058 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 15:56:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497846183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:26,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-08-30 15:56:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655668490] [2023-08-30 15:56:26,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 15:56:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 15:56:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=800, Unknown=13, NotChecked=180, Total=1122 [2023-08-30 15:56:26,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 745 [2023-08-30 15:56:26,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 1087 flow. Second operand has 34 states, 34 states have (on average 248.38235294117646) internal successors, (8445), 34 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:26,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:26,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 745 [2023-08-30 15:56:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:29,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:56:32,090 INFO L130 PetriNetUnfolder]: 25324/35164 cut-off events. [2023-08-30 15:56:32,091 INFO L131 PetriNetUnfolder]: For 53535/53710 co-relation queries the response was YES. [2023-08-30 15:56:32,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109886 conditions, 35164 events. 25324/35164 cut-off events. For 53535/53710 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 225430 event pairs, 10904 based on Foata normal form. 685/26182 useless extension candidates. Maximal degree in co-relation 109852. Up to 22762 conditions per place. [2023-08-30 15:56:32,326 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 163 selfloop transitions, 27 changer transitions 0/194 dead transitions. [2023-08-30 15:56:32,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 194 transitions, 1656 flow [2023-08-30 15:56:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:56:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:56:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2348 transitions. [2023-08-30 15:56:32,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35018642803877703 [2023-08-30 15:56:32,329 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2348 transitions. [2023-08-30 15:56:32,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2348 transitions. [2023-08-30 15:56:32,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:32,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2348 transitions. [2023-08-30 15:56:32,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.8888888888889) internal successors, (2348), 9 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:32,333 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 15:56:32,334 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 15:56:32,334 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 1087 flow. Second operand 9 states and 2348 transitions. [2023-08-30 15:56:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 194 transitions, 1656 flow [2023-08-30 15:56:32,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 194 transitions, 1602 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 15:56:32,419 INFO L231 Difference]: Finished difference. Result has 138 places, 123 transitions, 1097 flow [2023-08-30 15:56:32,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=138, PETRI_TRANSITIONS=123} [2023-08-30 15:56:32,419 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 70 predicate places. [2023-08-30 15:56:32,419 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 1097 flow [2023-08-30 15:56:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 248.38235294117646) internal successors, (8445), 34 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:32,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:32,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:32,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 15:56:32,620 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 15:56:32,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:56:32,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416827, now seen corresponding path program 1 times [2023-08-30 15:56:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:32,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011745623] [2023-08-30 15:56:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:33,151 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 15:56:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011745623] [2023-08-30 15:56:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011745623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962410873] [2023-08-30 15:56:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:33,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:33,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:33,153 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 15:56:33,155 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 15:56:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-30 15:56:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:33,353 INFO L321 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2023-08-30 15:56:33,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 47 [2023-08-30 15:56:33,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 15:56:33,448 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:56:33,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 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 15:56:33,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 15:56:33,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 15:56:33,525 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:56:33,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 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 15:56:33,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 15:56:33,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 15:56:33,562 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 15:56:33,576 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 15:56:33,586 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 15:56:33,592 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 15:56:33,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:35,930 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:35,931 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 15:56:35,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:35,944 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 8737 treesize of output 8641 [2023-08-30 15:56:36,012 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 15:56:36,021 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 239 [2023-08-30 15:56:36,029 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 239 treesize of output 235 [2023-08-30 15:56:36,038 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 235 treesize of output 203 [2023-08-30 15:56:36,047 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 266 treesize of output 202 [2023-08-30 15:56:36,533 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 15:56:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962410873] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:36,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:36,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-30 15:56:36,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645277160] [2023-08-30 15:56:36,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 15:56:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 15:56:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=653, Unknown=20, NotChecked=0, Total=812 [2023-08-30 15:56:39,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-08-30 15:56:39,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 123 transitions, 1097 flow. Second operand has 29 states, 29 states have (on average 259.3448275862069) internal successors, (7521), 29 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:39,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:39,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-08-30 15:56:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:42,356 INFO L130 PetriNetUnfolder]: 23738/33028 cut-off events. [2023-08-30 15:56:42,356 INFO L131 PetriNetUnfolder]: For 49452/49627 co-relation queries the response was YES. [2023-08-30 15:56:42,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103079 conditions, 33028 events. 23738/33028 cut-off events. For 49452/49627 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 210401 event pairs, 10507 based on Foata normal form. 685/24602 useless extension candidates. Maximal degree in co-relation 103045. Up to 21285 conditions per place. [2023-08-30 15:56:42,491 INFO L137 encePairwiseOnDemand]: 738/745 looper letters, 167 selfloop transitions, 21 changer transitions 0/192 dead transitions. [2023-08-30 15:56:42,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 192 transitions, 1652 flow [2023-08-30 15:56:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:56:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:56:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2188 transitions. [2023-08-30 15:56:42,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36711409395973155 [2023-08-30 15:56:42,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2188 transitions. [2023-08-30 15:56:42,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2188 transitions. [2023-08-30 15:56:42,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:42,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2188 transitions. [2023-08-30 15:56:42,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 273.5) internal successors, (2188), 8 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:42,497 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 15:56:42,498 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 15:56:42,498 INFO L175 Difference]: Start difference. First operand has 138 places, 123 transitions, 1097 flow. Second operand 8 states and 2188 transitions. [2023-08-30 15:56:42,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 192 transitions, 1652 flow [2023-08-30 15:56:42,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 192 transitions, 1616 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 15:56:42,572 INFO L231 Difference]: Finished difference. Result has 138 places, 121 transitions, 1081 flow [2023-08-30 15:56:42,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1081, PETRI_PLACES=138, PETRI_TRANSITIONS=121} [2023-08-30 15:56:42,800 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 70 predicate places. [2023-08-30 15:56:42,800 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 121 transitions, 1081 flow [2023-08-30 15:56:42,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 259.3448275862069) internal successors, (7521), 29 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:42,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:42,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:42,806 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 15:56:43,001 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 15:56:43,001 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:56:43,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416823, now seen corresponding path program 1 times [2023-08-30 15:56:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:43,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265407632] [2023-08-30 15:56:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:43,546 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 15:56:43,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265407632] [2023-08-30 15:56:43,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265407632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696338947] [2023-08-30 15:56:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:43,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:43,547 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 15:56:43,549 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 15:56:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:43,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 15:56:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:43,752 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 15:56:43,819 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 15:56:43,857 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:56:43,857 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 15:56:43,887 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 15:56:43,901 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 15:56:43,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:56:43,937 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 15:56:43,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:56:43,970 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 15:56:43,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:56:44,000 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 15:56:44,045 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 15:56:44,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:44,081 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1306 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1306) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 15:56:44,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:44,237 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 15:56:44,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:44,246 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 15:56:44,267 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 290 treesize of output 274 [2023-08-30 15:56:44,274 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 135 treesize of output 131 [2023-08-30 15:56:44,279 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 270 treesize of output 238 [2023-08-30 15:56:44,285 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 122 treesize of output 114 [2023-08-30 15:56:44,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:56:44,496 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 15:56:44,579 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 15:56:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696338947] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:44,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-08-30 15:56:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660037809] [2023-08-30 15:56:44,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 15:56:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 15:56:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=898, Unknown=28, NotChecked=62, Total=1122 [2023-08-30 15:56:44,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 745 [2023-08-30 15:56:44,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 121 transitions, 1081 flow. Second operand has 34 states, 34 states have (on average 239.38235294117646) internal successors, (8139), 34 states have internal predecessors, (8139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:44,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:44,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 745 [2023-08-30 15:56:44,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:50,439 INFO L130 PetriNetUnfolder]: 29502/41414 cut-off events. [2023-08-30 15:56:50,439 INFO L131 PetriNetUnfolder]: For 88111/88399 co-relation queries the response was YES. [2023-08-30 15:56:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129819 conditions, 41414 events. 29502/41414 cut-off events. For 88111/88399 co-relation queries the response was YES. Maximal size of possible extension queue 2289. Compared 275644 event pairs, 8459 based on Foata normal form. 952/30926 useless extension candidates. Maximal degree in co-relation 129785. Up to 10061 conditions per place. [2023-08-30 15:56:50,726 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 361 selfloop transitions, 69 changer transitions 0/434 dead transitions. [2023-08-30 15:56:50,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 434 transitions, 3163 flow [2023-08-30 15:56:50,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 15:56:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 15:56:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6310 transitions. [2023-08-30 15:56:50,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33879194630872483 [2023-08-30 15:56:50,731 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6310 transitions. [2023-08-30 15:56:50,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6310 transitions. [2023-08-30 15:56:50,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:50,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6310 transitions. [2023-08-30 15:56:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 252.4) internal successors, (6310), 25 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:50,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 745.0) internal successors, (19370), 26 states have internal predecessors, (19370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:50,746 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 745.0) internal successors, (19370), 26 states have internal predecessors, (19370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:50,747 INFO L175 Difference]: Start difference. First operand has 138 places, 121 transitions, 1081 flow. Second operand 25 states and 6310 transitions. [2023-08-30 15:56:50,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 434 transitions, 3163 flow [2023-08-30 15:56:51,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 434 transitions, 3094 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 15:56:51,008 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 1465 flow [2023-08-30 15:56:51,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1465, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2023-08-30 15:56:51,008 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 90 predicate places. [2023-08-30 15:56:51,009 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 1465 flow [2023-08-30 15:56:51,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 239.38235294117646) internal successors, (8139), 34 states have internal predecessors, (8139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:51,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:51,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:51,017 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 15:56:51,210 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 15:56:51,210 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:56:51,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1442119254, now seen corresponding path program 1 times [2023-08-30 15:56:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:51,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993115315] [2023-08-30 15:56:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:51,306 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 15:56:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993115315] [2023-08-30 15:56:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993115315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:56:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742897586] [2023-08-30 15:56:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:51,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:56:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:56:51,308 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 15:56:51,310 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 15:56:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:51,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:56:51,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:56:51,549 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 15:56:51,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:56:51,609 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 15:56:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742897586] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:56:51,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:56:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 15:56:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389886500] [2023-08-30 15:56:51,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:56:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:56:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:56:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:56:51,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:56:51,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 1465 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 15:56:51,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:51,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:56:51,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:56:55,422 INFO L130 PetriNetUnfolder]: 25493/35720 cut-off events. [2023-08-30 15:56:55,422 INFO L131 PetriNetUnfolder]: For 121159/121415 co-relation queries the response was YES. [2023-08-30 15:56:55,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112385 conditions, 35720 events. 25493/35720 cut-off events. For 121159/121415 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 229037 event pairs, 8920 based on Foata normal form. 4432/30399 useless extension candidates. Maximal degree in co-relation 112350. Up to 16080 conditions per place. [2023-08-30 15:56:55,609 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 339 selfloop transitions, 62 changer transitions 0/405 dead transitions. [2023-08-30 15:56:55,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 405 transitions, 3026 flow [2023-08-30 15:56:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 15:56:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 15:56:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5746 transitions. [2023-08-30 15:56:55,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284862043251305 [2023-08-30 15:56:55,614 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5746 transitions. [2023-08-30 15:56:55,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5746 transitions. [2023-08-30 15:56:55,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:56:55,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5746 transitions. [2023-08-30 15:56:55,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 319.22222222222223) internal successors, (5746), 18 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:56:55,627 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 15:56:55,628 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 15:56:55,628 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 1465 flow. Second operand 18 states and 5746 transitions. [2023-08-30 15:56:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 405 transitions, 3026 flow [2023-08-30 15:56:55,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 405 transitions, 2950 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 15:56:55,746 INFO L231 Difference]: Finished difference. Result has 170 places, 138 transitions, 1549 flow [2023-08-30 15:56:55,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1549, PETRI_PLACES=170, PETRI_TRANSITIONS=138} [2023-08-30 15:56:55,746 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 102 predicate places. [2023-08-30 15:56:55,746 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 138 transitions, 1549 flow [2023-08-30 15:56:55,747 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 15:56:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:56:55,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:56:55,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-30 15:56:55,947 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 15:56:55,948 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:56:55,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:56:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1133776633, now seen corresponding path program 2 times [2023-08-30 15:56:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:56:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388624508] [2023-08-30 15:56:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:56:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:56:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:56:55,996 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 15:56:55,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:56:55,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388624508] [2023-08-30 15:56:55,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388624508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:56:55,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:56:55,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:56:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264373754] [2023-08-30 15:56:55,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:56:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:56:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:56:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:56:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:56:56,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-08-30 15:56:56,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 138 transitions, 1549 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 15:56:56,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:56:56,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-08-30 15:56:56,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:01,989 INFO L130 PetriNetUnfolder]: 46643/65153 cut-off events. [2023-08-30 15:57:01,989 INFO L131 PetriNetUnfolder]: For 187968/194578 co-relation queries the response was YES. [2023-08-30 15:57:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214759 conditions, 65153 events. 46643/65153 cut-off events. For 187968/194578 co-relation queries the response was YES. Maximal size of possible extension queue 2376. Compared 433737 event pairs, 16078 based on Foata normal form. 5362/51770 useless extension candidates. Maximal degree in co-relation 214719. Up to 36457 conditions per place. [2023-08-30 15:57:02,400 INFO L137 encePairwiseOnDemand]: 740/745 looper letters, 228 selfloop transitions, 4 changer transitions 0/248 dead transitions. [2023-08-30 15:57:02,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 248 transitions, 2980 flow [2023-08-30 15:57:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1371 transitions. [2023-08-30 15:57:02,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46006711409395973 [2023-08-30 15:57:02,401 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1371 transitions. [2023-08-30 15:57:02,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1371 transitions. [2023-08-30 15:57:02,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:02,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1371 transitions. [2023-08-30 15:57:02,403 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 15:57:02,404 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 15:57:02,404 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 15:57:02,405 INFO L175 Difference]: Start difference. First operand has 170 places, 138 transitions, 1549 flow. Second operand 4 states and 1371 transitions. [2023-08-30 15:57:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 248 transitions, 2980 flow [2023-08-30 15:57:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 248 transitions, 2883 flow, removed 33 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:02,550 INFO L231 Difference]: Finished difference. Result has 174 places, 140 transitions, 1525 flow [2023-08-30 15:57:02,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1525, PETRI_PLACES=174, PETRI_TRANSITIONS=140} [2023-08-30 15:57:02,551 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 106 predicate places. [2023-08-30 15:57:02,551 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 140 transitions, 1525 flow [2023-08-30 15:57:02,551 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 15:57:02,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:02,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:02,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 15:57:02,552 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:02,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash 802207339, now seen corresponding path program 1 times [2023-08-30 15:57:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415076871] [2023-08-30 15:57:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:02,590 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 15:57:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415076871] [2023-08-30 15:57:02,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415076871] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298208116] [2023-08-30 15:57:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:02,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:02,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:02,592 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 15:57:02,597 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 15:57:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:02,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:57:02,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:02,824 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 15:57:02,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:02,867 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 15:57:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298208116] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:02,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:02,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-30 15:57:02,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7532844] [2023-08-30 15:57:02,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:02,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:57:02,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:57:02,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:57:03,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 15:57:03,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 140 transitions, 1525 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 15:57:03,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:03,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 15:57:03,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:09,960 INFO L130 PetriNetUnfolder]: 48876/69027 cut-off events. [2023-08-30 15:57:09,961 INFO L131 PetriNetUnfolder]: For 186386/194631 co-relation queries the response was YES. [2023-08-30 15:57:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227859 conditions, 69027 events. 48876/69027 cut-off events. For 186386/194631 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 472982 event pairs, 11106 based on Foata normal form. 5825/57275 useless extension candidates. Maximal degree in co-relation 227817. Up to 24482 conditions per place. [2023-08-30 15:57:10,479 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 272 selfloop transitions, 41 changer transitions 0/331 dead transitions. [2023-08-30 15:57:10,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 331 transitions, 3303 flow [2023-08-30 15:57:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:57:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:57:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3805 transitions. [2023-08-30 15:57:10,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256152125279642 [2023-08-30 15:57:10,483 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3805 transitions. [2023-08-30 15:57:10,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3805 transitions. [2023-08-30 15:57:10,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:10,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3805 transitions. [2023-08-30 15:57:10,487 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 15:57:10,490 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 15:57:10,491 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 15:57:10,491 INFO L175 Difference]: Start difference. First operand has 174 places, 140 transitions, 1525 flow. Second operand 12 states and 3805 transitions. [2023-08-30 15:57:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 331 transitions, 3303 flow [2023-08-30 15:57:10,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 331 transitions, 3295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:10,721 INFO L231 Difference]: Finished difference. Result has 187 places, 146 transitions, 1659 flow [2023-08-30 15:57:10,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1659, PETRI_PLACES=187, PETRI_TRANSITIONS=146} [2023-08-30 15:57:10,722 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 119 predicate places. [2023-08-30 15:57:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 146 transitions, 1659 flow [2023-08-30 15:57:10,722 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 15:57:10,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:10,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:10,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-30 15:57:10,924 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 15:57:10,924 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 15:57:10,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash 831611110, now seen corresponding path program 1 times [2023-08-30 15:57:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042446965] [2023-08-30 15:57:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:57:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042446965] [2023-08-30 15:57:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042446965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212219278] [2023-08-30 15:57:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:11,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:11,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:11,799 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 15:57:11,802 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 15:57:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:11,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-30 15:57:11,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:12,010 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 15:57:12,010 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 15:57:12,091 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 15:57:12,133 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 15:57:12,134 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 15:57:12,175 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 15:57:12,191 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 15:57:12,200 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 15:57:12,230 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 15:57:12,230 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 15:57:12,274 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 15:57:12,289 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 15:57:12,304 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 15:57:12,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:12,318 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 14 treesize of output 16 [2023-08-30 15:57:12,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:57:12,361 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 15:57:12,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 171 [2023-08-30 15:57:12,725 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 15:57:12,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:12,993 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4))) (let ((.cse0 (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store |c_#memory_int| c_~C~0.base v_ArrVal_1570) c_~A~0.base) (+ c_~A~0.offset .cse4 4)) 2147483648))) (.cse2 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse4))) (.cse3 (select |c_#memory_int| c_~B~0.base))) (and (or .cse0 (forall ((~B~0.offset Int)) (let ((.cse1 (select .cse3 (+ .cse4 ~B~0.offset)))) (or (<= .cse1 0) (< 4294967295 .cse1) (< (+ .cse2 .cse1 2147483648) 0) (< 2147483647 (+ .cse2 .cse1)))))) (or .cse0 (forall ((~B~0.offset Int)) (let ((.cse5 (select .cse3 (+ .cse4 ~B~0.offset)))) (or (< 0 .cse5) (< (+ 9223372039002259455 .cse5) 0) (< (+ .cse2 .cse5 2147483648) 0) (< 2147483647 (+ .cse2 .cse5))))))))) is different from false [2023-08-30 15:57:13,023 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4))) (.cse2 (select |c_#memory_int| c_~B~0.base)) (.cse3 (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store |c_#memory_int| c_~C~0.base v_ArrVal_1570) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483648)))) (and (or (forall ((~B~0.offset Int)) (let ((.cse0 (select .cse2 (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< 2147483647 (+ .cse1 .cse0)) (< (+ 9223372039002259455 .cse0) 0) (< (+ .cse1 .cse0 2147483648) 0)))) .cse3) (or (forall ((~B~0.offset Int)) (let ((.cse4 (select .cse2 (+ ~B~0.offset 4)))) (or (< 4294967295 .cse4) (< 2147483647 (+ .cse1 .cse4)) (<= .cse4 0) (< (+ .cse1 .cse4 2147483648) 0)))) .cse3))) is different from false [2023-08-30 15:57:13,168 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))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (or (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse0 c_~C~0.base v_ArrVal_1570) c_~A~0.base) .cse1) 2147483648)) (forall ((~B~0.offset Int)) (let ((.cse2 (select (select .cse0 c_~B~0.base) (+ ~B~0.offset 4))) (.cse3 (select (select .cse0 c_~A~0.base) .cse4))) (or (< (+ 9223372039002259455 .cse2) 0) (< 0 .cse2) (< 2147483647 (+ .cse2 .cse3)) (< (+ .cse2 .cse3 2147483648) 0))))))) (forall ((v_ArrVal_1569 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (or (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse5 c_~C~0.base v_ArrVal_1570) 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 (< 2147483647 (+ .cse6 .cse7)) (< 4294967295 .cse6) (< (+ .cse6 .cse7 2147483648) 0) (<= .cse6 0))))))))) is different from false [2023-08-30 15:57:13,236 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_1568 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (or (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1570) 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 (< (+ 9223372039002259455 .cse2) 0) (< (+ .cse3 .cse2 2147483648) 0) (< 2147483647 (+ .cse3 .cse2)) (< 0 .cse2))))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (or (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1570) 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 (<= .cse6 0) (< (+ .cse7 .cse6 2147483648) 0) (< 4294967295 .cse6) (< 2147483647 (+ .cse7 .cse6)))))))))) is different from false [2023-08-30 15:57:13,277 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~A~0.offset 4)) (.cse4 (+ c_~A~0.offset 8))) (and (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (v_ArrVal_1567 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1567) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (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 (<= .cse0 0) (< (+ .cse0 .cse1 2147483648) 0) (< 4294967295 .cse0) (< 2147483647 (+ .cse0 .cse1))))) (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1570) c_~A~0.base) .cse4) 2147483648))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (v_ArrVal_1567 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1567) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1569))) (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 (< (+ .cse5 .cse6 2147483648) 0) (< (+ 9223372039002259455 .cse5) 0) (< 2147483647 (+ .cse5 .cse6)) (< 0 .cse5)))) (forall ((v_ArrVal_1570 (Array Int Int))) (< (select (select (store .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1570) c_~A~0.base) .cse4) 2147483648))))))) is different from false [2023-08-30 15:57:14,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:14,251 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 15:57:14,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:14,392 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 4388415 treesize of output 4319495 [2023-08-30 15:57:17,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:17,344 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 11870 [2023-08-30 15:57:17,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:17,517 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 11851 treesize of output 11596 [2023-08-30 15:57:17,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:17,696 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 11587 treesize of output 11402 [2023-08-30 15:57:17,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:17,883 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 15:57:18,051 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 15:57:18,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:18,248 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 10630 [2023-08-30 15:57:18,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:18,504 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 10611 treesize of output 10356 [2023-08-30 15:57:18,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:18,707 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 10347 treesize of output 9294 [2023-08-30 15:57:18,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:57:18,918 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 9275 treesize of output 8758 [2023-08-30 15:57:19,107 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