./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:04:35,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:04:35,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:04:36,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:04:36,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:04:36,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:04:36,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:04:36,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:04:36,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:04:36,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:04:36,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:04:36,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:04:36,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:04:36,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:04:36,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:04:36,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:04:36,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:04:36,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:04:36,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:04:36,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:04:36,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:04:36,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:04:36,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:04:36,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:04:36,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:04:36,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:04:36,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:04:36,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:04:36,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:04:36,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:04:36,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:04:36,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:04:36,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:04:36,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:04:36,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:04:36,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:04:36,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:04:36,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:04:36,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:04:36,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:04:36,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:04:36,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:04:36,110 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:04:36,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:04:36,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:04:36,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:04:36,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:04:36,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:04:36,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:04:36,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:04:36,114 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:04:36,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:04:36,115 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:04:36,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:04:36,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:04:36,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:04:36,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:04:36,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:04:36,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:04:36,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:04:36,117 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:04:36,117 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:04:36,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:04:36,118 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:04:36,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:04:36,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:04:36,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:04:36,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:04:36,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:04:36,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:04:36,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:04:36,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:04:36,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:04:36,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:04:36,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:04:36,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:04:36,121 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:04:36,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:04:36,121 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:04:36,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:04:36,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:04:36,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:04:36,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:04:36,530 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:04:36,531 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:04:36,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 12:04:37,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:04:38,205 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:04:38,206 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 12:04:38,213 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4634571c/7faafc6accc04d83beb1004e364aa4d4/FLAG78f33ae3f [2023-08-30 12:04:38,228 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4634571c/7faafc6accc04d83beb1004e364aa4d4 [2023-08-30 12:04:38,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:04:38,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:04:38,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:04:38,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:04:38,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:04:38,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1564c74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38, skipping insertion in model container [2023-08-30 12:04:38,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:04:38,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:04:38,395 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/test-easy11.wvr.c[2005,2018] [2023-08-30 12:04:38,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:04:38,404 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:04:38,430 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/test-easy11.wvr.c[2005,2018] [2023-08-30 12:04:38,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:04:38,440 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:04:38,440 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:04:38,450 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:04:38,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38 WrapperNode [2023-08-30 12:04:38,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:04:38,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:04:38,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:04:38,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:04:38,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,508 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-08-30 12:04:38,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:04:38,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:04:38,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:04:38,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:04:38,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:04:38,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:04:38,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:04:38,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:04:38,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (1/1) ... [2023-08-30 12:04:38,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:04:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:38,626 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 12:04:38,685 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 12:04:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:04:38,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:04:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:04:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:04:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:04:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:04:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:04:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:04:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:04:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:04:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:04:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:04:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:04:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:04:38,736 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 12:04:38,909 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:04:38,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:04:39,167 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:04:39,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:04:39,223 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:04:39,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:04:39 BoogieIcfgContainer [2023-08-30 12:04:39,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:04:39,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:04:39,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:04:39,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:04:39,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:04:38" (1/3) ... [2023-08-30 12:04:39,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a62534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:04:39, skipping insertion in model container [2023-08-30 12:04:39,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:04:38" (2/3) ... [2023-08-30 12:04:39,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a62534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:04:39, skipping insertion in model container [2023-08-30 12:04:39,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:04:39" (3/3) ... [2023-08-30 12:04:39,241 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-30 12:04:39,249 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:04:39,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:04:39,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:04:39,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:04:39,375 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:04:39,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2023-08-30 12:04:39,500 INFO L130 PetriNetUnfolder]: 6/89 cut-off events. [2023-08-30 12:04:39,500 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:04:39,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 12:04:39,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 198 flow [2023-08-30 12:04:39,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 155 flow [2023-08-30 12:04:39,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:04:39,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 155 flow [2023-08-30 12:04:39,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 155 flow [2023-08-30 12:04:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 155 flow [2023-08-30 12:04:39,568 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 12:04:39,569 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:04:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 5/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 12:04:39,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-08-30 12:04:43,207 INFO L134 LiptonReduction]: Checked pairs total: 1018 [2023-08-30 12:04:43,207 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-30 12:04:43,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:04:43,229 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;@6d004175, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:04:43,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:04:43,233 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 12:04:43,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:04:43,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:43,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:43,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:43,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash 10735871, now seen corresponding path program 1 times [2023-08-30 12:04:43,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:43,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668093661] [2023-08-30 12:04:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:43,463 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 12:04:43,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:43,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668093661] [2023-08-30 12:04:43,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668093661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:43,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:43,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:04:43,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162945510] [2023-08-30 12:04:43,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:43,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 12:04:43,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 12:04:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 12:04:43,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-08-30 12:04:43,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:43,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-08-30 12:04:43,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:43,590 INFO L130 PetriNetUnfolder]: 133/230 cut-off events. [2023-08-30 12:04:43,590 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 12:04:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 230 events. 133/230 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 759 event pairs, 105 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 420. Up to 231 conditions per place. [2023-08-30 12:04:43,598 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-30 12:04:43,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2023-08-30 12:04:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 12:04:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 12:04:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 177 transitions. [2023-08-30 12:04:43,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636942675159236 [2023-08-30 12:04:43,611 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 177 transitions. [2023-08-30 12:04:43,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 177 transitions. [2023-08-30 12:04:43,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:43,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 177 transitions. [2023-08-30 12:04:43,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,622 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,624 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 2 states and 177 transitions. [2023-08-30 12:04:43,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2023-08-30 12:04:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:43,629 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2023-08-30 12:04:43,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-08-30 12:04:43,634 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-08-30 12:04:43,634 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2023-08-30 12:04:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:43,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:04:43,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:43,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 10735884, now seen corresponding path program 1 times [2023-08-30 12:04:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762076945] [2023-08-30 12:04:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:43,784 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 12:04:43,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762076945] [2023-08-30 12:04:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762076945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:43,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942854757] [2023-08-30 12:04:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:43,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-08-30 12:04:43,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:43,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-08-30 12:04:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:43,914 INFO L130 PetriNetUnfolder]: 84/151 cut-off events. [2023-08-30 12:04:43,915 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:04:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 151 events. 84/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 499 event pairs, 7 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 311. Up to 78 conditions per place. [2023-08-30 12:04:43,916 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 32 selfloop transitions, 5 changer transitions 2/39 dead transitions. [2023-08-30 12:04:43,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 39 transitions, 164 flow [2023-08-30 12:04:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-08-30 12:04:43,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207006369426752 [2023-08-30 12:04:43,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-08-30 12:04:43,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-08-30 12:04:43,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:43,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-08-30 12:04:43,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,926 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 42 flow. Second operand 4 states and 327 transitions. [2023-08-30 12:04:43,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 39 transitions, 164 flow [2023-08-30 12:04:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:04:43,927 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 72 flow [2023-08-30 12:04:43,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-08-30 12:04:43,929 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-30 12:04:43,929 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 72 flow [2023-08-30 12:04:43,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:43,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:43,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:04:43,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:04:43,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:43,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash 10735870, now seen corresponding path program 1 times [2023-08-30 12:04:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:43,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607256224] [2023-08-30 12:04:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:43,999 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 12:04:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607256224] [2023-08-30 12:04:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607256224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:44,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:44,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206641539] [2023-08-30 12:04:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:44,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-08-30 12:04:44,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:44,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-08-30 12:04:44,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:44,079 INFO L130 PetriNetUnfolder]: 62/113 cut-off events. [2023-08-30 12:04:44,080 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 12:04:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 113 events. 62/113 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 296. Up to 94 conditions per place. [2023-08-30 12:04:44,081 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-30 12:04:44,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 140 flow [2023-08-30 12:04:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 12:04:44,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-08-30 12:04:44,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:44,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,089 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-08-30 12:04:44,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 140 flow [2023-08-30 12:04:44,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:44,091 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 72 flow [2023-08-30 12:04:44,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-30 12:04:44,092 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-30 12:04:44,092 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 72 flow [2023-08-30 12:04:44,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:44,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:04:44,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:04:44,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:44,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787494, now seen corresponding path program 1 times [2023-08-30 12:04:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783844239] [2023-08-30 12:04:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:44,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:44,210 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 12:04:44,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:44,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783844239] [2023-08-30 12:04:44,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783844239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:44,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:44,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:44,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125425361] [2023-08-30 12:04:44,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:44,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-08-30 12:04:44,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:44,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-08-30 12:04:44,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:44,295 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-08-30 12:04:44,296 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 12:04:44,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 101 events. 54/101 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 249 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 263. Up to 62 conditions per place. [2023-08-30 12:04:44,297 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-30 12:04:44,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-08-30 12:04:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 12:04:44,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-08-30 12:04:44,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:44,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 12:04:44,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,304 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-08-30 12:04:44,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-08-30 12:04:44,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:44,306 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 97 flow [2023-08-30 12:04:44,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-30 12:04:44,307 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-30 12:04:44,307 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 97 flow [2023-08-30 12:04:44,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:44,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:04:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:04:44,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:44,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787485, now seen corresponding path program 1 times [2023-08-30 12:04:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025846210] [2023-08-30 12:04:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:44,424 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 12:04:44,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:44,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025846210] [2023-08-30 12:04:44,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025846210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:44,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:44,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085727505] [2023-08-30 12:04:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:44,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:44,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:44,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-08-30 12:04:44,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:44,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-08-30 12:04:44,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:44,497 INFO L130 PetriNetUnfolder]: 43/82 cut-off events. [2023-08-30 12:04:44,497 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 12:04:44,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 82 events. 43/82 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 6 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 253. Up to 57 conditions per place. [2023-08-30 12:04:44,499 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-30 12:04:44,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 163 flow [2023-08-30 12:04:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-30 12:04:44,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-08-30 12:04:44,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-30 12:04:44,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-30 12:04:44,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:44,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-30 12:04:44,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,505 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 97 flow. Second operand 4 states and 312 transitions. [2023-08-30 12:04:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 163 flow [2023-08-30 12:04:44,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:44,507 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 96 flow [2023-08-30 12:04:44,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 12:04:44,507 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-30 12:04:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 96 flow [2023-08-30 12:04:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:44,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:04:44,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:44,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2043019224, now seen corresponding path program 1 times [2023-08-30 12:04:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330802364] [2023-08-30 12:04:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:44,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:44,581 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 12:04:44,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:44,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330802364] [2023-08-30 12:04:44,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330802364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:44,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:44,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:04:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272002652] [2023-08-30 12:04:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:44,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:04:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:04:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:04:44,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-30 12:04:44,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:44,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-30 12:04:44,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:44,640 INFO L130 PetriNetUnfolder]: 39/72 cut-off events. [2023-08-30 12:04:44,640 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-08-30 12:04:44,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 72 events. 39/72 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 11 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 42 conditions per place. [2023-08-30 12:04:44,642 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 19 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2023-08-30 12:04:44,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 146 flow [2023-08-30 12:04:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:04:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:04:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-30 12:04:44,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286624203821656 [2023-08-30 12:04:44,644 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-30 12:04:44,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-30 12:04:44,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:44,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-30 12:04:44,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,647 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,647 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 96 flow. Second operand 4 states and 332 transitions. [2023-08-30 12:04:44,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 146 flow [2023-08-30 12:04:44,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:44,649 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 92 flow [2023-08-30 12:04:44,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-30 12:04:44,650 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-30 12:04:44,651 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 92 flow [2023-08-30 12:04:44,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:44,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:44,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:04:44,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:44,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2041347085, now seen corresponding path program 1 times [2023-08-30 12:04:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501748115] [2023-08-30 12:04:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:44,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:44,747 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 12:04:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501748115] [2023-08-30 12:04:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501748115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:44,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493684223] [2023-08-30 12:04:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:44,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 12:04:44,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:44,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 12:04:44,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:44,903 INFO L130 PetriNetUnfolder]: 42/79 cut-off events. [2023-08-30 12:04:44,904 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 12:04:44,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 79 events. 42/79 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 2 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 246. Up to 29 conditions per place. [2023-08-30 12:04:44,905 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 27 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2023-08-30 12:04:44,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 221 flow [2023-08-30 12:04:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 551 transitions. [2023-08-30 12:04:44,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43869426751592355 [2023-08-30 12:04:44,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 551 transitions. [2023-08-30 12:04:44,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 551 transitions. [2023-08-30 12:04:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:44,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 551 transitions. [2023-08-30 12:04:44,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.875) internal successors, (551), 8 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,912 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,912 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 92 flow. Second operand 8 states and 551 transitions. [2023-08-30 12:04:44,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 221 flow [2023-08-30 12:04:44,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:44,914 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 130 flow [2023-08-30 12:04:44,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-30 12:04:44,915 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 12:04:44,915 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 130 flow [2023-08-30 12:04:44,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:44,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:44,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:04:44,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:44,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -787943001, now seen corresponding path program 2 times [2023-08-30 12:04:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102862935] [2023-08-30 12:04:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:45,013 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 12:04:45,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:45,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102862935] [2023-08-30 12:04:45,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102862935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:45,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:45,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152640494] [2023-08-30 12:04:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:45,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:45,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 12:04:45,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:45,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 12:04:45,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:45,338 INFO L130 PetriNetUnfolder]: 52/95 cut-off events. [2023-08-30 12:04:45,338 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 12:04:45,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 95 events. 52/95 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 344. Up to 56 conditions per place. [2023-08-30 12:04:45,339 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 29 selfloop transitions, 14 changer transitions 0/43 dead transitions. [2023-08-30 12:04:45,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 285 flow [2023-08-30 12:04:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-08-30 12:04:45,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44187898089171973 [2023-08-30 12:04:45,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-08-30 12:04:45,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-08-30 12:04:45,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:45,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-08-30 12:04:45,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,347 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,348 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 130 flow. Second operand 8 states and 555 transitions. [2023-08-30 12:04:45,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 285 flow [2023-08-30 12:04:45,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 251 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 12:04:45,350 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 167 flow [2023-08-30 12:04:45,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-30 12:04:45,351 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-30 12:04:45,351 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 167 flow [2023-08-30 12:04:45,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:45,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:04:45,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:45,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash -787943030, now seen corresponding path program 1 times [2023-08-30 12:04:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132887676] [2023-08-30 12:04:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:45,495 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 12:04:45,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:45,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132887676] [2023-08-30 12:04:45,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132887676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:45,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841638316] [2023-08-30 12:04:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:45,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-08-30 12:04:45,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:45,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-08-30 12:04:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:45,638 INFO L130 PetriNetUnfolder]: 53/98 cut-off events. [2023-08-30 12:04:45,639 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 12:04:45,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 98 events. 53/98 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 236 event pairs, 5 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 391. Up to 61 conditions per place. [2023-08-30 12:04:45,640 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2023-08-30 12:04:45,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 289 flow [2023-08-30 12:04:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-30 12:04:45,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-08-30 12:04:45,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-30 12:04:45,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-30 12:04:45,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:45,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-30 12:04:45,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,649 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 167 flow. Second operand 6 states and 426 transitions. [2023-08-30 12:04:45,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 289 flow [2023-08-30 12:04:45,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 257 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 12:04:45,652 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 171 flow [2023-08-30 12:04:45,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-30 12:04:45,653 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-30 12:04:45,653 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 171 flow [2023-08-30 12:04:45,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:45,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:45,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:04:45,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:45,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash -787546850, now seen corresponding path program 2 times [2023-08-30 12:04:45,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656958758] [2023-08-30 12:04:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:45,742 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 12:04:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656958758] [2023-08-30 12:04:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656958758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:45,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:45,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:45,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607990431] [2023-08-30 12:04:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:45,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:45,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 12:04:45,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:45,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 12:04:45,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:45,898 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-08-30 12:04:45,899 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-08-30 12:04:45,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 101 events. 54/101 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 4 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 401. Up to 46 conditions per place. [2023-08-30 12:04:45,900 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 30 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2023-08-30 12:04:45,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 315 flow [2023-08-30 12:04:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2023-08-30 12:04:45,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710191082802546 [2023-08-30 12:04:45,903 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2023-08-30 12:04:45,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2023-08-30 12:04:45,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:45,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2023-08-30 12:04:45,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,908 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,908 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 171 flow. Second operand 8 states and 549 transitions. [2023-08-30 12:04:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 315 flow [2023-08-30 12:04:45,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 287 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 12:04:45,910 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 181 flow [2023-08-30 12:04:45,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=181, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-30 12:04:45,911 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-08-30 12:04:45,911 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 181 flow [2023-08-30 12:04:45,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:45,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:45,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:45,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:04:45,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:45,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -787597041, now seen corresponding path program 3 times [2023-08-30 12:04:45,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:45,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282321057] [2023-08-30 12:04:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:45,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:45,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282321057] [2023-08-30 12:04:45,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282321057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:45,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:45,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:45,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330701306] [2023-08-30 12:04:45,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:45,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:45,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:45,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:46,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-08-30 12:04:46,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:46,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-08-30 12:04:46,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:46,134 INFO L130 PetriNetUnfolder]: 64/117 cut-off events. [2023-08-30 12:04:46,134 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2023-08-30 12:04:46,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 117 events. 64/117 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 293 event pairs, 9 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 485. Up to 73 conditions per place. [2023-08-30 12:04:46,135 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 30 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2023-08-30 12:04:46,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 355 flow [2023-08-30 12:04:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-30 12:04:46,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-08-30 12:04:46,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-30 12:04:46,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-30 12:04:46,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-30 12:04:46,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,142 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 181 flow. Second operand 6 states and 426 transitions. [2023-08-30 12:04:46,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 355 flow [2023-08-30 12:04:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 321 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 12:04:46,144 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 233 flow [2023-08-30 12:04:46,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-30 12:04:46,145 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-08-30 12:04:46,145 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 233 flow [2023-08-30 12:04:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:46,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:46,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:04:46,146 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:46,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash -787597070, now seen corresponding path program 3 times [2023-08-30 12:04:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176215248] [2023-08-30 12:04:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:46,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:46,212 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 12:04:46,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176215248] [2023-08-30 12:04:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176215248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:46,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:04:46,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885977716] [2023-08-30 12:04:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:04:46,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 12:04:46,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:46,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 12:04:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:46,388 INFO L130 PetriNetUnfolder]: 65/120 cut-off events. [2023-08-30 12:04:46,389 INFO L131 PetriNetUnfolder]: For 299/299 co-relation queries the response was YES. [2023-08-30 12:04:46,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 120 events. 65/120 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 535. Up to 78 conditions per place. [2023-08-30 12:04:46,391 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 33 selfloop transitions, 16 changer transitions 0/49 dead transitions. [2023-08-30 12:04:46,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 409 flow [2023-08-30 12:04:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 553 transitions. [2023-08-30 12:04:46,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44028662420382164 [2023-08-30 12:04:46,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 553 transitions. [2023-08-30 12:04:46,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 553 transitions. [2023-08-30 12:04:46,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:46,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 553 transitions. [2023-08-30 12:04:46,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,404 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 233 flow. Second operand 8 states and 553 transitions. [2023-08-30 12:04:46,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 409 flow [2023-08-30 12:04:46,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 372 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:46,407 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 244 flow [2023-08-30 12:04:46,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-30 12:04:46,408 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-08-30 12:04:46,408 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 244 flow [2023-08-30 12:04:46,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:46,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:46,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:04:46,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:46,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1344811048, now seen corresponding path program 1 times [2023-08-30 12:04:46,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114920915] [2023-08-30 12:04:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:46,442 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 12:04:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114920915] [2023-08-30 12:04:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114920915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:46,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117050646] [2023-08-30 12:04:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:46,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:46,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:46,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:46,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:46,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:46,579 INFO L130 PetriNetUnfolder]: 102/193 cut-off events. [2023-08-30 12:04:46,579 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2023-08-30 12:04:46,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 193 events. 102/193 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 649 event pairs, 14 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 857. Up to 78 conditions per place. [2023-08-30 12:04:46,581 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 42 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2023-08-30 12:04:46,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 577 flow [2023-08-30 12:04:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:04:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:04:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-08-30 12:04:46,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-08-30 12:04:46,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-08-30 12:04:46,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-08-30 12:04:46,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:46,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-08-30 12:04:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,588 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 244 flow. Second operand 7 states and 505 transitions. [2023-08-30 12:04:46,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 577 flow [2023-08-30 12:04:46,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 12:04:46,592 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 378 flow [2023-08-30 12:04:46,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-30 12:04:46,592 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-08-30 12:04:46,593 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 378 flow [2023-08-30 12:04:46,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:46,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:04:46,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:46,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1343574150, now seen corresponding path program 1 times [2023-08-30 12:04:46,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:46,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990507778] [2023-08-30 12:04:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:46,625 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 12:04:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990507778] [2023-08-30 12:04:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990507778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:46,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912132833] [2023-08-30 12:04:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:46,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:46,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:46,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:46,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:46,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:46,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:46,767 INFO L130 PetriNetUnfolder]: 106/197 cut-off events. [2023-08-30 12:04:46,768 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2023-08-30 12:04:46,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 197 events. 106/197 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 655 event pairs, 6 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 990. Up to 133 conditions per place. [2023-08-30 12:04:46,770 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-08-30 12:04:46,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 580 flow [2023-08-30 12:04:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:04:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:04:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-30 12:04:46,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-08-30 12:04:46,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-30 12:04:46,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-30 12:04:46,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:46,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-30 12:04:46,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,775 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 378 flow. Second operand 5 states and 367 transitions. [2023-08-30 12:04:46,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 580 flow [2023-08-30 12:04:46,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 552 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:46,781 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 399 flow [2023-08-30 12:04:46,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-30 12:04:46,782 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-08-30 12:04:46,782 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 399 flow [2023-08-30 12:04:46,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:46,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:04:46,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:46,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1343570430, now seen corresponding path program 2 times [2023-08-30 12:04:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729988140] [2023-08-30 12:04:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:46,816 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 12:04:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:46,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729988140] [2023-08-30 12:04:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729988140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393277684] [2023-08-30 12:04:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:46,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:46,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:46,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:46,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:46,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:46,960 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-08-30 12:04:46,960 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-08-30 12:04:46,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 215 events. 112/215 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 10 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 1104. Up to 84 conditions per place. [2023-08-30 12:04:46,962 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 42 selfloop transitions, 18 changer transitions 2/62 dead transitions. [2023-08-30 12:04:46,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 640 flow [2023-08-30 12:04:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-30 12:04:46,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-08-30 12:04:46,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-30 12:04:46,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-30 12:04:46,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:46,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-30 12:04:46,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,969 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 399 flow. Second operand 6 states and 433 transitions. [2023-08-30 12:04:46,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 640 flow [2023-08-30 12:04:46,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 602 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:46,974 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 416 flow [2023-08-30 12:04:46,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-08-30 12:04:46,975 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-30 12:04:46,975 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 416 flow [2023-08-30 12:04:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:46,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:46,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:46,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:04:46,976 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:46,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1343573218, now seen corresponding path program 2 times [2023-08-30 12:04:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:46,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088273037] [2023-08-30 12:04:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:47,009 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 12:04:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088273037] [2023-08-30 12:04:47,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088273037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:47,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:47,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094955202] [2023-08-30 12:04:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:47,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:47,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:47,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:47,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:47,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:47,150 INFO L130 PetriNetUnfolder]: 122/233 cut-off events. [2023-08-30 12:04:47,150 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2023-08-30 12:04:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 233 events. 122/233 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 842 event pairs, 34 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1238. Up to 134 conditions per place. [2023-08-30 12:04:47,153 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 52 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2023-08-30 12:04:47,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 684 flow [2023-08-30 12:04:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:04:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:04:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-08-30 12:04:47,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-08-30 12:04:47,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-08-30 12:04:47,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-08-30 12:04:47,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:47,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-08-30 12:04:47,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,159 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 416 flow. Second operand 5 states and 372 transitions. [2023-08-30 12:04:47,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 684 flow [2023-08-30 12:04:47,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 650 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:47,165 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 479 flow [2023-08-30 12:04:47,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-08-30 12:04:47,166 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-08-30 12:04:47,166 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 479 flow [2023-08-30 12:04:47,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:47,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:47,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:04:47,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:47,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:47,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1343571358, now seen corresponding path program 3 times [2023-08-30 12:04:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:47,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184256599] [2023-08-30 12:04:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:47,197 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 12:04:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184256599] [2023-08-30 12:04:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184256599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820389100] [2023-08-30 12:04:47,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:47,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:47,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:47,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:47,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:47,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:47,378 INFO L130 PetriNetUnfolder]: 114/221 cut-off events. [2023-08-30 12:04:47,379 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-08-30 12:04:47,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 221 events. 114/221 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 798 event pairs, 21 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 1188. Up to 101 conditions per place. [2023-08-30 12:04:47,381 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 49 selfloop transitions, 20 changer transitions 3/72 dead transitions. [2023-08-30 12:04:47,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 741 flow [2023-08-30 12:04:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 577 transitions. [2023-08-30 12:04:47,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593949044585987 [2023-08-30 12:04:47,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 577 transitions. [2023-08-30 12:04:47,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 577 transitions. [2023-08-30 12:04:47,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:47,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 577 transitions. [2023-08-30 12:04:47,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,388 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,388 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 479 flow. Second operand 8 states and 577 transitions. [2023-08-30 12:04:47,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 741 flow [2023-08-30 12:04:47,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 726 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:47,395 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 510 flow [2023-08-30 12:04:47,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2023-08-30 12:04:47,395 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-30 12:04:47,395 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 510 flow [2023-08-30 12:04:47,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:47,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:47,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:04:47,396 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:47,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1355852010, now seen corresponding path program 3 times [2023-08-30 12:04:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947197943] [2023-08-30 12:04:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:47,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:47,429 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 12:04:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947197943] [2023-08-30 12:04:47,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947197943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:47,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291954287] [2023-08-30 12:04:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:47,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:47,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:47,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:47,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:47,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:47,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:47,572 INFO L130 PetriNetUnfolder]: 146/281 cut-off events. [2023-08-30 12:04:47,572 INFO L131 PetriNetUnfolder]: For 1877/1877 co-relation queries the response was YES. [2023-08-30 12:04:47,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 281 events. 146/281 cut-off events. For 1877/1877 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1102 event pairs, 28 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1588. Up to 107 conditions per place. [2023-08-30 12:04:47,575 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 50 selfloop transitions, 28 changer transitions 2/80 dead transitions. [2023-08-30 12:04:47,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 935 flow [2023-08-30 12:04:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:04:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:04:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2023-08-30 12:04:47,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45586897179253866 [2023-08-30 12:04:47,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2023-08-30 12:04:47,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2023-08-30 12:04:47,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:47,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2023-08-30 12:04:47,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,582 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 510 flow. Second operand 7 states and 501 transitions. [2023-08-30 12:04:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 935 flow [2023-08-30 12:04:47,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 881 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:47,589 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 703 flow [2023-08-30 12:04:47,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-08-30 12:04:47,589 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2023-08-30 12:04:47,590 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 703 flow [2023-08-30 12:04:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:47,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 12:04:47,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:47,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1354298939, now seen corresponding path program 1 times [2023-08-30 12:04:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:47,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102996537] [2023-08-30 12:04:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:47,622 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 12:04:47,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102996537] [2023-08-30 12:04:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102996537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:47,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184911570] [2023-08-30 12:04:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:47,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:47,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:47,627 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 12:04:47,645 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 12:04:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:04:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:47,780 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 12:04:47,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:47,839 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 12:04:47,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184911570] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:47,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 12:04:47,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-30 12:04:47,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565370167] [2023-08-30 12:04:47,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:47,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:47,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:47,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:04:47,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:47,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:47,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:47,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:47,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:48,027 INFO L130 PetriNetUnfolder]: 140/267 cut-off events. [2023-08-30 12:04:48,027 INFO L131 PetriNetUnfolder]: For 2096/2096 co-relation queries the response was YES. [2023-08-30 12:04:48,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 267 events. 140/267 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1011 event pairs, 28 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1602. Up to 156 conditions per place. [2023-08-30 12:04:48,031 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 51 selfloop transitions, 30 changer transitions 0/81 dead transitions. [2023-08-30 12:04:48,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 976 flow [2023-08-30 12:04:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2023-08-30 12:04:48,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692144373673036 [2023-08-30 12:04:48,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 442 transitions. [2023-08-30 12:04:48,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 442 transitions. [2023-08-30 12:04:48,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:48,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 442 transitions. [2023-08-30 12:04:48,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,040 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 703 flow. Second operand 6 states and 442 transitions. [2023-08-30 12:04:48,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 976 flow [2023-08-30 12:04:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 932 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-30 12:04:48,049 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 787 flow [2023-08-30 12:04:48,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2023-08-30 12:04:48,050 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2023-08-30 12:04:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 787 flow [2023-08-30 12:04:48,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:48,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:48,058 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 12:04:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:48,256 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:48,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1354297978, now seen corresponding path program 4 times [2023-08-30 12:04:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:48,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690987266] [2023-08-30 12:04:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:48,332 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 12:04:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690987266] [2023-08-30 12:04:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690987266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611119365] [2023-08-30 12:04:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:48,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:48,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 787 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:48,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:48,513 INFO L130 PetriNetUnfolder]: 131/248 cut-off events. [2023-08-30 12:04:48,513 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-08-30 12:04:48,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 248 events. 131/248 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 916 event pairs, 10 based on Foata normal form. 4/252 useless extension candidates. Maximal degree in co-relation 1565. Up to 156 conditions per place. [2023-08-30 12:04:48,516 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 55 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2023-08-30 12:04:48,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 74 transitions, 955 flow [2023-08-30 12:04:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:04:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:04:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-30 12:04:48,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-08-30 12:04:48,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-30 12:04:48,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-30 12:04:48,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:48,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-30 12:04:48,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,525 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 787 flow. Second operand 5 states and 367 transitions. [2023-08-30 12:04:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 74 transitions, 955 flow [2023-08-30 12:04:48,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 942 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 12:04:48,536 INFO L231 Difference]: Finished difference. Result has 90 places, 63 transitions, 789 flow [2023-08-30 12:04:48,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2023-08-30 12:04:48,537 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-08-30 12:04:48,537 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 789 flow [2023-08-30 12:04:48,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:48,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:48,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 12:04:48,543 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:48,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1354295190, now seen corresponding path program 4 times [2023-08-30 12:04:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835772292] [2023-08-30 12:04:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:48,581 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 12:04:48,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:48,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835772292] [2023-08-30 12:04:48,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835772292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:48,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:48,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096060964] [2023-08-30 12:04:48,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:48,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:48,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 789 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:48,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:48,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:48,798 INFO L130 PetriNetUnfolder]: 127/240 cut-off events. [2023-08-30 12:04:48,798 INFO L131 PetriNetUnfolder]: For 2000/2000 co-relation queries the response was YES. [2023-08-30 12:04:48,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 240 events. 127/240 cut-off events. For 2000/2000 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 20 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1553. Up to 92 conditions per place. [2023-08-30 12:04:48,801 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 50 selfloop transitions, 27 changer transitions 1/78 dead transitions. [2023-08-30 12:04:48,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 78 transitions, 1012 flow [2023-08-30 12:04:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:04:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:04:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 572 transitions. [2023-08-30 12:04:48,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554140127388535 [2023-08-30 12:04:48,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 572 transitions. [2023-08-30 12:04:48,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 572 transitions. [2023-08-30 12:04:48,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:48,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 572 transitions. [2023-08-30 12:04:48,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,807 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,807 INFO L175 Difference]: Start difference. First operand has 90 places, 63 transitions, 789 flow. Second operand 8 states and 572 transitions. [2023-08-30 12:04:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 78 transitions, 1012 flow [2023-08-30 12:04:48,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 973 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 12:04:48,820 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 764 flow [2023-08-30 12:04:48,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-08-30 12:04:48,821 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2023-08-30 12:04:48,821 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 764 flow [2023-08-30 12:04:48,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:48,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:48,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 12:04:48,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:48,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1354296118, now seen corresponding path program 5 times [2023-08-30 12:04:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799809618] [2023-08-30 12:04:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:48,854 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 12:04:48,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:48,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799809618] [2023-08-30 12:04:48,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799809618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:48,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:04:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:04:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027564901] [2023-08-30 12:04:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:04:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:04:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:04:48,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:48,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:48,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:48,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:48,986 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-08-30 12:04:48,986 INFO L131 PetriNetUnfolder]: For 1943/1943 co-relation queries the response was YES. [2023-08-30 12:04:48,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 215 events. 112/215 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 750 event pairs, 8 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 1405. Up to 106 conditions per place. [2023-08-30 12:04:48,989 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 48 selfloop transitions, 19 changer transitions 4/71 dead transitions. [2023-08-30 12:04:48,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 946 flow [2023-08-30 12:04:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:04:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:04:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-30 12:04:48,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-08-30 12:04:48,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-30 12:04:48,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-30 12:04:48,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:48,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-30 12:04:48,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,010 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 764 flow. Second operand 6 states and 433 transitions. [2023-08-30 12:04:49,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 946 flow [2023-08-30 12:04:49,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 864 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 12:04:49,019 INFO L231 Difference]: Finished difference. Result has 87 places, 55 transitions, 641 flow [2023-08-30 12:04:49,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=641, PETRI_PLACES=87, PETRI_TRANSITIONS=55} [2023-08-30 12:04:49,020 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-08-30 12:04:49,021 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 55 transitions, 641 flow [2023-08-30 12:04:49,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:49,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:49,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 12:04:49,021 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:49,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:49,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1320102062, now seen corresponding path program 1 times [2023-08-30 12:04:49,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:49,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241106914] [2023-08-30 12:04:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:49,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241106914] [2023-08-30 12:04:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241106914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994445243] [2023-08-30 12:04:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:49,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:49,097 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 12:04:49,121 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 12:04:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:04:49,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:49,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994445243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:49,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:49,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 12:04:49,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562622987] [2023-08-30 12:04:49,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:49,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 12:04:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 12:04:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-30 12:04:49,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 12:04:49,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 55 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:49,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 12:04:49,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:49,955 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-08-30 12:04:49,956 INFO L131 PetriNetUnfolder]: For 1781/1781 co-relation queries the response was YES. [2023-08-30 12:04:49,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 216 events. 117/216 cut-off events. For 1781/1781 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 741 event pairs, 0 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 1345. Up to 57 conditions per place. [2023-08-30 12:04:49,958 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 35 selfloop transitions, 32 changer transitions 28/95 dead transitions. [2023-08-30 12:04:49,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 1069 flow [2023-08-30 12:04:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:04:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:04:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1272 transitions. [2023-08-30 12:04:49,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641635936976197 [2023-08-30 12:04:49,961 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1272 transitions. [2023-08-30 12:04:49,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1272 transitions. [2023-08-30 12:04:49,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:49,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1272 transitions. [2023-08-30 12:04:49,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.94736842105263) internal successors, (1272), 19 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,969 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,969 INFO L175 Difference]: Start difference. First operand has 87 places, 55 transitions, 641 flow. Second operand 19 states and 1272 transitions. [2023-08-30 12:04:49,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 1069 flow [2023-08-30 12:04:49,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 997 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-30 12:04:49,977 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 527 flow [2023-08-30 12:04:49,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=527, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2023-08-30 12:04:49,978 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-08-30 12:04:49,978 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 527 flow [2023-08-30 12:04:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:49,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:49,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:49,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:50,186 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,SelfDestructingSolverStorable22 [2023-08-30 12:04:50,186 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:50,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1257759387, now seen corresponding path program 1 times [2023-08-30 12:04:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428323816] [2023-08-30 12:04:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428323816] [2023-08-30 12:04:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428323816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450916516] [2023-08-30 12:04:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:50,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:50,347 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 12:04:50,350 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 12:04:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:50,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:04:50,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:50,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450916516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:50,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:50,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 12:04:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80962476] [2023-08-30 12:04:50,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 12:04:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:50,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 12:04:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-30 12:04:50,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 12:04:50,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 527 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:50,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:50,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 12:04:50,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:50,960 INFO L130 PetriNetUnfolder]: 84/153 cut-off events. [2023-08-30 12:04:50,960 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 12:04:50,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 153 events. 84/153 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 435 event pairs, 2 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 1008. Up to 61 conditions per place. [2023-08-30 12:04:50,962 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 16 changer transitions 24/66 dead transitions. [2023-08-30 12:04:50,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 66 transitions, 835 flow [2023-08-30 12:04:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:04:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:04:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 800 transitions. [2023-08-30 12:04:50,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42462845010615713 [2023-08-30 12:04:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 800 transitions. [2023-08-30 12:04:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 800 transitions. [2023-08-30 12:04:50,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 800 transitions. [2023-08-30 12:04:50,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.66666666666667) internal successors, (800), 12 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:50,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:50,970 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:50,970 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 527 flow. Second operand 12 states and 800 transitions. [2023-08-30 12:04:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 66 transitions, 835 flow [2023-08-30 12:04:50,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 608 flow, removed 41 selfloop flow, removed 23 redundant places. [2023-08-30 12:04:50,976 INFO L231 Difference]: Finished difference. Result has 74 places, 34 transitions, 306 flow [2023-08-30 12:04:50,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=74, PETRI_TRANSITIONS=34} [2023-08-30 12:04:50,976 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-30 12:04:50,976 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 34 transitions, 306 flow [2023-08-30 12:04:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:50,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:50,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:50,984 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 12:04:51,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:51,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:51,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1298903517, now seen corresponding path program 2 times [2023-08-30 12:04:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218777543] [2023-08-30 12:04:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218777543] [2023-08-30 12:04:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218777543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397772494] [2023-08-30 12:04:51,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:04:51,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:51,407 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 12:04:51,433 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 12:04:51,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:04:51,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:04:51,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:51,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:51,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397772494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:51,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:51,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 12:04:51,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385241137] [2023-08-30 12:04:51,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 12:04:51,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 12:04:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-08-30 12:04:51,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 12:04:51,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 34 transitions, 306 flow. Second operand has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:51,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:51,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 12:04:51,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:52,081 INFO L130 PetriNetUnfolder]: 71/144 cut-off events. [2023-08-30 12:04:52,082 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2023-08-30 12:04:52,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 144 events. 71/144 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 455 event pairs, 1 based on Foata normal form. 14/158 useless extension candidates. Maximal degree in co-relation 776. Up to 43 conditions per place. [2023-08-30 12:04:52,083 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 25 selfloop transitions, 31 changer transitions 14/70 dead transitions. [2023-08-30 12:04:52,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 696 flow [2023-08-30 12:04:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:04:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:04:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1257 transitions. [2023-08-30 12:04:52,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213878645658733 [2023-08-30 12:04:52,087 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1257 transitions. [2023-08-30 12:04:52,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1257 transitions. [2023-08-30 12:04:52,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:52,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1257 transitions. [2023-08-30 12:04:52,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.15789473684211) internal successors, (1257), 19 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:52,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:52,093 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:52,093 INFO L175 Difference]: Start difference. First operand has 74 places, 34 transitions, 306 flow. Second operand 19 states and 1257 transitions. [2023-08-30 12:04:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 696 flow [2023-08-30 12:04:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 631 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-30 12:04:52,098 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 437 flow [2023-08-30 12:04:52,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2023-08-30 12:04:52,099 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-08-30 12:04:52,099 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 437 flow [2023-08-30 12:04:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:52,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:52,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:52,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:52,309 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:52,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -966432237, now seen corresponding path program 3 times [2023-08-30 12:04:52,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:52,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035773368] [2023-08-30 12:04:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:52,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:52,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:52,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035773368] [2023-08-30 12:04:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035773368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:52,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137034927] [2023-08-30 12:04:52,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:04:52,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:52,404 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 12:04:52,406 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 12:04:52,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 12:04:52,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:52,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:04:52,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:52,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137034927] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:52,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 12:04:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087874697] [2023-08-30 12:04:52,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 12:04:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 12:04:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-30 12:04:52,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 12:04:52,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 437 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:52,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:52,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 12:04:52,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:53,354 INFO L130 PetriNetUnfolder]: 71/148 cut-off events. [2023-08-30 12:04:53,355 INFO L131 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2023-08-30 12:04:53,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 148 events. 71/148 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 471 event pairs, 0 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 917. Up to 47 conditions per place. [2023-08-30 12:04:53,356 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 19 changer transitions 22/67 dead transitions. [2023-08-30 12:04:53,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 67 transitions, 802 flow [2023-08-30 12:04:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:04:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:04:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 990 transitions. [2023-08-30 12:04:53,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42038216560509556 [2023-08-30 12:04:53,359 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 990 transitions. [2023-08-30 12:04:53,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 990 transitions. [2023-08-30 12:04:53,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:53,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 990 transitions. [2023-08-30 12:04:53,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.0) internal successors, (990), 15 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 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 12:04:53,365 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 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 12:04:53,366 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 437 flow. Second operand 15 states and 990 transitions. [2023-08-30 12:04:53,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 67 transitions, 802 flow [2023-08-30 12:04:53,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 671 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-08-30 12:04:53,371 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 364 flow [2023-08-30 12:04:53,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=364, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2023-08-30 12:04:53,372 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-08-30 12:04:53,372 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 364 flow [2023-08-30 12:04:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:53,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:53,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 12:04:53,590 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:53,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 954706432, now seen corresponding path program 4 times [2023-08-30 12:04:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141373239] [2023-08-30 12:04:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141373239] [2023-08-30 12:04:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141373239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120949691] [2023-08-30 12:04:53,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:04:53,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:53,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:53,658 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 12:04:53,661 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 12:04:53,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:04:53,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:53,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:04:53,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:53,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:53,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120949691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:53,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:53,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-08-30 12:04:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579382119] [2023-08-30 12:04:53,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:53,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:04:53,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:53,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:04:53,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:04:53,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 12:04:53,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:53,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 12:04:53,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:53,979 INFO L130 PetriNetUnfolder]: 45/98 cut-off events. [2023-08-30 12:04:53,980 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-08-30 12:04:53,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 98 events. 45/98 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 8 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 563. Up to 48 conditions per place. [2023-08-30 12:04:53,981 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 27 selfloop transitions, 21 changer transitions 0/48 dead transitions. [2023-08-30 12:04:53,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 48 transitions, 495 flow [2023-08-30 12:04:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 12:04:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 12:04:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2023-08-30 12:04:53,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44296467863346844 [2023-08-30 12:04:53,983 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2023-08-30 12:04:53,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2023-08-30 12:04:53,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:53,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2023-08-30 12:04:53,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,987 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,987 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 364 flow. Second operand 11 states and 765 transitions. [2023-08-30 12:04:53,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 48 transitions, 495 flow [2023-08-30 12:04:53,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 48 transitions, 432 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-30 12:04:53,990 INFO L231 Difference]: Finished difference. Result has 72 places, 36 transitions, 332 flow [2023-08-30 12:04:53,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=332, PETRI_PLACES=72, PETRI_TRANSITIONS=36} [2023-08-30 12:04:53,991 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-08-30 12:04:53,991 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 36 transitions, 332 flow [2023-08-30 12:04:53,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:53,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:53,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:53,998 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 12:04:54,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 12:04:54,198 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:04:54,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash -913936527, now seen corresponding path program 5 times [2023-08-30 12:04:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:54,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141803048] [2023-08-30 12:04:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:54,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:54,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141803048] [2023-08-30 12:04:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141803048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302077558] [2023-08-30 12:04:54,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:04:54,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:54,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:54,448 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 12:04:54,457 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 12:04:54,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:04:54,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:04:54,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:04:54,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:04:54,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:04:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302077558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:04:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:04:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-30 12:04:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592148032] [2023-08-30 12:04:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:04:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:04:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:04:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:04:54,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2023-08-30 12:04:54,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 36 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:54,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:54,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2023-08-30 12:04:54,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:54,702 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-08-30 12:04:54,703 INFO L131 PetriNetUnfolder]: For 383/383 co-relation queries the response was YES. [2023-08-30 12:04:54,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 87 events. 40/87 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 3 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 481. Up to 31 conditions per place. [2023-08-30 12:04:54,703 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-30 12:04:54,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 38 transitions, 400 flow [2023-08-30 12:04:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:04:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:04:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-08-30 12:04:54,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-08-30 12:04:54,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-08-30 12:04:54,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-08-30 12:04:54,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:54,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-08-30 12:04:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:54,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:54,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:54,708 INFO L175 Difference]: Start difference. First operand has 72 places, 36 transitions, 332 flow. Second operand 7 states and 505 transitions. [2023-08-30 12:04:54,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 38 transitions, 400 flow [2023-08-30 12:04:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 38 transitions, 341 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-30 12:04:54,723 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-08-30 12:04:54,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-08-30 12:04:54,723 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2023-08-30 12:04:54,724 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-08-30 12:04:54,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:54,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:04:54,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:04:54,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:04:54,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:04:54,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:04:54,757 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 12:04:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:54,935 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:54,940 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:04:54,940 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:04:54,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:04:54 BasicIcfg [2023-08-30 12:04:54,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:04:54,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:04:54,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:04:54,946 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:04:54,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:04:39" (3/4) ... [2023-08-30 12:04:54,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:04:54,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:04:54,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:04:54,956 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 12:04:54,956 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:04:54,956 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:04:54,957 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:04:55,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:04:55,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:04:55,039 INFO L158 Benchmark]: Toolchain (without parser) took 16803.01ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 81.0MB in the beginning and 127.9MB in the end (delta: -46.9MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,039 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:04:55,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.46ms. Allocated memory is still 102.8MB. Free memory was 80.7MB in the beginning and 70.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.48ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 68.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,040 INFO L158 Benchmark]: Boogie Preprocessor took 59.86ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 67.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:04:55,040 INFO L158 Benchmark]: RCFGBuilder took 659.57ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 82.8MB in the end (delta: -15.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,040 INFO L158 Benchmark]: TraceAbstraction took 15714.90ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 81.9MB in the beginning and 131.1MB in the end (delta: -49.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,040 INFO L158 Benchmark]: Witness Printer took 92.17ms. Allocated memory is still 180.4MB. Free memory was 131.1MB in the beginning and 127.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:04:55,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.46ms. Allocated memory is still 102.8MB. Free memory was 80.7MB in the beginning and 70.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.48ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 68.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.86ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 67.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 659.57ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 82.8MB in the end (delta: -15.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15714.90ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 81.9MB in the beginning and 131.1MB in the end (delta: -49.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 92.17ms. Allocated memory is still 180.4MB. Free memory was 131.1MB in the beginning and 127.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 75 PlacesBefore, 26 PlacesAfterwards, 73 TransitionsBefore, 21 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 1018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, independent: 966, independent conditional: 0, independent unconditional: 966, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 515, independent: 511, independent conditional: 0, independent unconditional: 511, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 973, independent: 455, independent conditional: 0, independent unconditional: 455, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 515, unknown conditional: 0, unknown unconditional: 515] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.5s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2296 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1832 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 847 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5385 IncrementalHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 163 mSDtfsCounter, 5385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=20, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1376 SizeOfPredicates, 15 NumberOfNonLiveVariables, 700 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 41 InterpolantComputations, 23 PerfectInterpolantSequences, 15/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:04:55,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE