./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:32:39,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:32:39,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:32:39,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:32:39,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:32:39,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:32:39,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:32:39,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:32:39,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:32:39,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:32:39,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:32:39,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:32:39,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:32:39,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:32:39,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:32:39,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:32:39,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:32:39,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:32:39,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:32:39,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:32:39,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:32:39,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:32:39,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:32:39,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:32:39,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:32:39,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:32:39,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:32:39,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:32:39,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:32:39,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:32:39,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:32:39,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:32:39,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:32:39,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:32:39,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:32:39,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:32:39,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:32:39,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:32:39,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:32:39,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:32:39,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:32:39,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:32:39,771 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:32:39,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:32:39,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:32:39,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:32:39,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:32:39,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:32:39,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:32:39,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:32:39,775 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:32:39,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:32:39,776 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:32:39,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:32:39,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:32:39,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:32:39,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:32:39,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:32:39,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:32:39,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:32:39,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:32:39,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:32:39,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:32:39,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:32:39,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:32:39,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:32:39,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:32:39,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:32:39,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:32:39,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:32:39,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:32:39,781 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:32:39,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:32:39,781 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:32:39,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:32:40,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:32:40,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:32:40,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:32:40,126 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:32:40,126 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:32:40,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-09-01 07:32:41,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:32:41,518 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:32:41,525 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-09-01 07:32:41,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b813e3f/53a4fbdab1ee4ca6a9efd2fc9c9285df/FLAG58eea0216 [2023-09-01 07:32:41,548 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6b813e3f/53a4fbdab1ee4ca6a9efd2fc9c9285df [2023-09-01 07:32:41,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:32:41,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:32:41,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:32:41,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:32:41,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:32:41,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f5b0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41, skipping insertion in model container [2023-09-01 07:32:41,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:32:41,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:32:41,758 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/chl-node-trans.wvr.c[3945,3958] [2023-09-01 07:32:41,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:32:41,798 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:32:41,841 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/chl-node-trans.wvr.c[3945,3958] [2023-09-01 07:32:41,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:32:41,863 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:32:41,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41 WrapperNode [2023-09-01 07:32:41,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:32:41,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:32:41,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:32:41,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:32:41,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,941 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 497 [2023-09-01 07:32:41,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:32:41,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:32:41,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:32:41,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:32:41,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:41,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:32:42,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:32:42,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:32:42,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:32:42,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (1/1) ... [2023-09-01 07:32:42,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:32:42,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:32:42,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:32:42,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:32:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:32:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:32:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:32:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:32:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:32:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:32:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:32:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:32:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:32:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:32:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:32:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:32:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:32:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:32:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:32:42,125 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:32:42,302 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:32:42,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:32:43,013 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:32:43,029 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:32:43,030 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:32:43,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:32:43 BoogieIcfgContainer [2023-09-01 07:32:43,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:32:43,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:32:43,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:32:43,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:32:43,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:32:41" (1/3) ... [2023-09-01 07:32:43,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@899a08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:32:43, skipping insertion in model container [2023-09-01 07:32:43,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:32:41" (2/3) ... [2023-09-01 07:32:43,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@899a08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:32:43, skipping insertion in model container [2023-09-01 07:32:43,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:32:43" (3/3) ... [2023-09-01 07:32:43,040 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-09-01 07:32:43,047 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:32:43,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:32:43,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-09-01 07:32:43,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:32:43,216 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:32:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 614 transitions, 1252 flow [2023-09-01 07:32:43,507 INFO L130 PetriNetUnfolder]: 47/611 cut-off events. [2023-09-01 07:32:43,507 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:32:43,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 611 events. 47/611 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-09-01 07:32:43,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 614 transitions, 1252 flow [2023-09-01 07:32:43,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 593 transitions, 1201 flow [2023-09-01 07:32:43,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:32:43,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 593 transitions, 1201 flow [2023-09-01 07:32:43,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 593 transitions, 1201 flow [2023-09-01 07:32:43,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 593 transitions, 1201 flow [2023-09-01 07:32:43,674 INFO L130 PetriNetUnfolder]: 46/593 cut-off events. [2023-09-01 07:32:43,675 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:32:43,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 593 events. 46/593 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1064 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-09-01 07:32:43,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 34440 [2023-09-01 07:33:10,660 INFO L134 LiptonReduction]: Checked pairs total: 44964 [2023-09-01 07:33:10,660 INFO L136 LiptonReduction]: Total number of compositions: 761 [2023-09-01 07:33:10,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:33:10,678 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;@36c89603, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:33:10,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-09-01 07:33:10,680 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 07:33:10,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:33:10,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:10,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:33:10,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:10,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2023-09-01 07:33:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838998963] [2023-09-01 07:33:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838998963] [2023-09-01 07:33:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838998963] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:10,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:10,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:33:10,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395565343] [2023-09-01 07:33:10,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:33:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:33:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:33:10,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1375 [2023-09-01 07:33:10,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 177 flow. Second operand has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:10,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:10,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1375 [2023-09-01 07:33:10,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:11,964 INFO L130 PetriNetUnfolder]: 4309/6198 cut-off events. [2023-09-01 07:33:11,965 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2023-09-01 07:33:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12739 conditions, 6198 events. 4309/6198 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29847 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 11796. Up to 6199 conditions per place. [2023-09-01 07:33:12,001 INFO L137 encePairwiseOnDemand]: 1367/1375 looper letters, 73 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-09-01 07:33:12,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 307 flow [2023-09-01 07:33:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:33:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:33:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1237 transitions. [2023-09-01 07:33:12,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44981818181818184 [2023-09-01 07:33:12,023 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1237 transitions. [2023-09-01 07:33:12,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1237 transitions. [2023-09-01 07:33:12,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:12,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1237 transitions. [2023-09-01 07:33:12,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 618.5) internal successors, (1237), 2 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:12,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:12,049 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:12,051 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 177 flow. Second operand 2 states and 1237 transitions. [2023-09-01 07:33:12,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 307 flow [2023-09-01 07:33:12,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:33:12,065 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 152 flow [2023-09-01 07:33:12,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-09-01 07:33:12,070 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-09-01 07:33:12,070 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 152 flow [2023-09-01 07:33:12,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:12,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:12,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:33:12,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:33:12,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:12,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 77732, now seen corresponding path program 1 times [2023-09-01 07:33:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012065080] [2023-09-01 07:33:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:12,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012065080] [2023-09-01 07:33:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012065080] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323200327] [2023-09-01 07:33:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:12,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:12,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:12,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-09-01 07:33:12,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:12,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:12,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-09-01 07:33:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:13,392 INFO L130 PetriNetUnfolder]: 4309/6196 cut-off events. [2023-09-01 07:33:13,392 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 07:33:13,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 6196 events. 4309/6196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29844 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12646. Up to 6196 conditions per place. [2023-09-01 07:33:13,431 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-09-01 07:33:13,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 290 flow [2023-09-01 07:33:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1783 transitions. [2023-09-01 07:33:13,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43224242424242426 [2023-09-01 07:33:13,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1783 transitions. [2023-09-01 07:33:13,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1783 transitions. [2023-09-01 07:33:13,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:13,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1783 transitions. [2023-09-01 07:33:13,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:13,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:13,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:13,453 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 152 flow. Second operand 3 states and 1783 transitions. [2023-09-01 07:33:13,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 290 flow [2023-09-01 07:33:13,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:33:13,456 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 150 flow [2023-09-01 07:33:13,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-09-01 07:33:13,457 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-09-01 07:33:13,457 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 150 flow [2023-09-01 07:33:13,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:13,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:13,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:33:13,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:33:13,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:13,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 77731, now seen corresponding path program 1 times [2023-09-01 07:33:13,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:13,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052783028] [2023-09-01 07:33:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052783028] [2023-09-01 07:33:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052783028] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:13,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:13,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480370871] [2023-09-01 07:33:13,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:13,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:13,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-09-01 07:33:13,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:13,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:13,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-09-01 07:33:13,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:14,595 INFO L130 PetriNetUnfolder]: 4309/6194 cut-off events. [2023-09-01 07:33:14,595 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 07:33:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 6194 events. 4309/6194 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29840 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12643. Up to 6194 conditions per place. [2023-09-01 07:33:14,624 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-09-01 07:33:14,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 284 flow [2023-09-01 07:33:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1787 transitions. [2023-09-01 07:33:14,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332121212121212 [2023-09-01 07:33:14,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1787 transitions. [2023-09-01 07:33:14,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1787 transitions. [2023-09-01 07:33:14,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:14,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1787 transitions. [2023-09-01 07:33:14,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:14,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:14,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:14,645 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 150 flow. Second operand 3 states and 1787 transitions. [2023-09-01 07:33:14,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 284 flow [2023-09-01 07:33:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:14,647 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 147 flow [2023-09-01 07:33:14,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-09-01 07:33:14,648 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-09-01 07:33:14,648 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 147 flow [2023-09-01 07:33:14,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:14,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:14,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:33:14,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:33:14,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:14,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:14,651 INFO L85 PathProgramCache]: Analyzing trace with hash 77639, now seen corresponding path program 1 times [2023-09-01 07:33:14,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170291946] [2023-09-01 07:33:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:14,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170291946] [2023-09-01 07:33:14,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170291946] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:14,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816082169] [2023-09-01 07:33:14,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:14,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:14,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:14,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:33:14,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:14,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:14,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:33:14,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:16,531 INFO L130 PetriNetUnfolder]: 8617/12381 cut-off events. [2023-09-01 07:33:16,531 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:33:16,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25276 conditions, 12381 events. 8617/12381 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66718 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25272. Up to 6195 conditions per place. [2023-09-01 07:33:16,592 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 125 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-09-01 07:33:16,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 539 flow [2023-09-01 07:33:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1844 transitions. [2023-09-01 07:33:16,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44703030303030306 [2023-09-01 07:33:16,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1844 transitions. [2023-09-01 07:33:16,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1844 transitions. [2023-09-01 07:33:16,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:16,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1844 transitions. [2023-09-01 07:33:16,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.6666666666666) internal successors, (1844), 3 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:16,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:16,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:16,619 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 147 flow. Second operand 3 states and 1844 transitions. [2023-09-01 07:33:16,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 539 flow [2023-09-01 07:33:16,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 131 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:16,625 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 202 flow [2023-09-01 07:33:16,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-09-01 07:33:16,628 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-09-01 07:33:16,628 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 202 flow [2023-09-01 07:33:16,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:16,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:16,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:33:16,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:33:16,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:16,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2412280, now seen corresponding path program 1 times [2023-09-01 07:33:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:16,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724920471] [2023-09-01 07:33:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724920471] [2023-09-01 07:33:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724920471] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:33:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944473670] [2023-09-01 07:33:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:16,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:33:16,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:16,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:16,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:33:16,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:18,634 INFO L130 PetriNetUnfolder]: 8617/12378 cut-off events. [2023-09-01 07:33:18,635 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:33:18,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25291 conditions, 12378 events. 8617/12378 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66615 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25286. Up to 12378 conditions per place. [2023-09-01 07:33:18,711 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-09-01 07:33:18,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 332 flow [2023-09-01 07:33:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-09-01 07:33:18,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-09-01 07:33:18,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-09-01 07:33:18,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-09-01 07:33:18,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:18,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-09-01 07:33:18,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:18,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:18,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:18,731 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 202 flow. Second operand 3 states and 1776 transitions. [2023-09-01 07:33:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 332 flow [2023-09-01 07:33:18,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:33:18,733 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 180 flow [2023-09-01 07:33:18,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-09-01 07:33:18,735 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-09-01 07:33:18,736 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 180 flow [2023-09-01 07:33:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:18,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:33:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:33:18,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:18,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2414611, now seen corresponding path program 1 times [2023-09-01 07:33:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464857024] [2023-09-01 07:33:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464857024] [2023-09-01 07:33:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464857024] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:18,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:18,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:18,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531582358] [2023-09-01 07:33:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:18,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-09-01 07:33:18,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:18,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:18,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-09-01 07:33:18,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:20,070 INFO L130 PetriNetUnfolder]: 8617/12374 cut-off events. [2023-09-01 07:33:20,070 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:33:20,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25278 conditions, 12374 events. 8617/12374 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66587 event pairs, 7650 based on Foata normal form. 0/6683 useless extension candidates. Maximal degree in co-relation 25273. Up to 12374 conditions per place. [2023-09-01 07:33:20,125 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-09-01 07:33:20,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 314 flow [2023-09-01 07:33:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1782 transitions. [2023-09-01 07:33:20,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-09-01 07:33:20,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1782 transitions. [2023-09-01 07:33:20,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1782 transitions. [2023-09-01 07:33:20,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:20,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1782 transitions. [2023-09-01 07:33:20,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.0) internal successors, (1782), 3 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:20,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:20,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:20,141 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 180 flow. Second operand 3 states and 1782 transitions. [2023-09-01 07:33:20,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 314 flow [2023-09-01 07:33:20,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:20,143 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 177 flow [2023-09-01 07:33:20,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-09-01 07:33:20,144 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-09-01 07:33:20,144 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 177 flow [2023-09-01 07:33:20,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:20,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:20,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:33:20,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:33:20,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:20,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2414678, now seen corresponding path program 1 times [2023-09-01 07:33:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20292654] [2023-09-01 07:33:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:20,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20292654] [2023-09-01 07:33:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20292654] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:20,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:20,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:20,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039862934] [2023-09-01 07:33:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:20,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:20,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-09-01 07:33:20,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:20,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:20,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-09-01 07:33:20,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:21,744 INFO L130 PetriNetUnfolder]: 8617/12370 cut-off events. [2023-09-01 07:33:21,744 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 07:33:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25271 conditions, 12370 events. 8617/12370 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66550 event pairs, 7650 based on Foata normal form. 2/6683 useless extension candidates. Maximal degree in co-relation 25266. Up to 12370 conditions per place. [2023-09-01 07:33:21,815 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 66 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-09-01 07:33:21,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 307 flow [2023-09-01 07:33:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1774 transitions. [2023-09-01 07:33:21,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300606060606061 [2023-09-01 07:33:21,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1774 transitions. [2023-09-01 07:33:21,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1774 transitions. [2023-09-01 07:33:21,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:21,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1774 transitions. [2023-09-01 07:33:21,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 591.3333333333334) internal successors, (1774), 3 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:21,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:21,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:21,835 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 177 flow. Second operand 3 states and 1774 transitions. [2023-09-01 07:33:21,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 307 flow [2023-09-01 07:33:21,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:21,837 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 174 flow [2023-09-01 07:33:21,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-09-01 07:33:21,838 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-09-01 07:33:21,838 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 174 flow [2023-09-01 07:33:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:21,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:21,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:33:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:33:21,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:21,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2412279, now seen corresponding path program 1 times [2023-09-01 07:33:21,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:21,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565125337] [2023-09-01 07:33:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565125337] [2023-09-01 07:33:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565125337] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:33:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666766046] [2023-09-01 07:33:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:21,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:21,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:33:21,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:33:21,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:33:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:33:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:33:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:22,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:33:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666766046] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:33:22,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:33:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:33:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804582110] [2023-09-01 07:33:22,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:33:22,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:33:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:33:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:33:22,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:33:22,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:22,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:22,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:33:22,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:25,820 INFO L130 PetriNetUnfolder]: 21541/30919 cut-off events. [2023-09-01 07:33:25,820 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-09-01 07:33:25,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 30919 events. 21541/30919 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 186755 event pairs, 19125 based on Foata normal form. 0/16701 useless extension candidates. Maximal degree in co-relation 63142. Up to 6189 conditions per place. [2023-09-01 07:33:25,995 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 273 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2023-09-01 07:33:25,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 294 transitions, 1270 flow [2023-09-01 07:33:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:33:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:33:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3717 transitions. [2023-09-01 07:33:26,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505454545454545 [2023-09-01 07:33:26,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3717 transitions. [2023-09-01 07:33:26,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3717 transitions. [2023-09-01 07:33:26,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:26,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3717 transitions. [2023-09-01 07:33:26,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 619.5) internal successors, (3717), 6 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:26,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:26,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:26,028 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 174 flow. Second operand 6 states and 3717 transitions. [2023-09-01 07:33:26,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 294 transitions, 1270 flow [2023-09-01 07:33:26,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 294 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:26,032 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 323 flow [2023-09-01 07:33:26,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-09-01 07:33:26,033 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-09-01 07:33:26,033 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 323 flow [2023-09-01 07:33:26,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:26,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:26,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:33:26,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:33:26,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:26,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:26,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 74862323, now seen corresponding path program 1 times [2023-09-01 07:33:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202305704] [2023-09-01 07:33:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202305704] [2023-09-01 07:33:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202305704] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657044902] [2023-09-01 07:33:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:26,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-09-01 07:33:26,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:26,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:26,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-09-01 07:33:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:29,457 INFO L130 PetriNetUnfolder]: 21541/30914 cut-off events. [2023-09-01 07:33:29,457 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2023-09-01 07:33:29,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 30914 events. 21541/30914 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188536 event pairs, 19125 based on Foata normal form. 0/16710 useless extension candidates. Maximal degree in co-relation 63180. Up to 30914 conditions per place. [2023-09-01 07:33:29,626 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-09-01 07:33:29,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 483 flow [2023-09-01 07:33:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1778 transitions. [2023-09-01 07:33:29,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103030303030304 [2023-09-01 07:33:29,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1778 transitions. [2023-09-01 07:33:29,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1778 transitions. [2023-09-01 07:33:29,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:29,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1778 transitions. [2023-09-01 07:33:29,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.6666666666666) internal successors, (1778), 3 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:29,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:29,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:29,645 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 323 flow. Second operand 3 states and 1778 transitions. [2023-09-01 07:33:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 483 flow [2023-09-01 07:33:29,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 453 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:29,649 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 293 flow [2023-09-01 07:33:29,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-09-01 07:33:29,651 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-09-01 07:33:29,651 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 293 flow [2023-09-01 07:33:29,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:29,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:33:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:33:29,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:29,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 74862322, now seen corresponding path program 1 times [2023-09-01 07:33:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:29,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196961059] [2023-09-01 07:33:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196961059] [2023-09-01 07:33:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196961059] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:33:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767010451] [2023-09-01 07:33:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-09-01 07:33:29,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:29,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:29,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-09-01 07:33:29,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:32,770 INFO L130 PetriNetUnfolder]: 21541/30909 cut-off events. [2023-09-01 07:33:32,770 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2023-09-01 07:33:32,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 30909 events. 21541/30909 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188538 event pairs, 19125 based on Foata normal form. 0/16712 useless extension candidates. Maximal degree in co-relation 63153. Up to 30909 conditions per place. [2023-09-01 07:33:32,941 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-09-01 07:33:32,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 451 flow [2023-09-01 07:33:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1771 transitions. [2023-09-01 07:33:32,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42933333333333334 [2023-09-01 07:33:32,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1771 transitions. [2023-09-01 07:33:32,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1771 transitions. [2023-09-01 07:33:32,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:32,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1771 transitions. [2023-09-01 07:33:32,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:32,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:32,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:32,957 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 293 flow. Second operand 3 states and 1771 transitions. [2023-09-01 07:33:32,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 451 flow [2023-09-01 07:33:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:32,960 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 292 flow [2023-09-01 07:33:32,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-09-01 07:33:32,962 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-09-01 07:33:32,962 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 292 flow [2023-09-01 07:33:32,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:32,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:32,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:33:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:33:32,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:32,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1974230638, now seen corresponding path program 1 times [2023-09-01 07:33:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144406350] [2023-09-01 07:33:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144406350] [2023-09-01 07:33:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144406350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:33:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:33:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664001048] [2023-09-01 07:33:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:33,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:33,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:33:33,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:33:33,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:33,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:33,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:33:33,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:40,147 INFO L130 PetriNetUnfolder]: 43066/61754 cut-off events. [2023-09-01 07:33:40,147 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-09-01 07:33:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126123 conditions, 61754 events. 43066/61754 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412742 event pairs, 38250 based on Foata normal form. 0/33392 useless extension candidates. Maximal degree in co-relation 126114. Up to 30910 conditions per place. [2023-09-01 07:33:40,539 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-09-01 07:33:40,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 634 flow [2023-09-01 07:33:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1817 transitions. [2023-09-01 07:33:40,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404848484848485 [2023-09-01 07:33:40,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1817 transitions. [2023-09-01 07:33:40,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1817 transitions. [2023-09-01 07:33:40,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:40,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1817 transitions. [2023-09-01 07:33:40,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.6666666666666) internal successors, (1817), 3 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:40,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:40,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:40,558 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 292 flow. Second operand 3 states and 1817 transitions. [2023-09-01 07:33:40,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 634 flow [2023-09-01 07:33:40,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:33:40,561 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2023-09-01 07:33:40,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-09-01 07:33:40,561 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-09-01 07:33:40,562 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2023-09-01 07:33:40,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:40,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:40,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:33:40,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:33:40,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:40,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601384, now seen corresponding path program 1 times [2023-09-01 07:33:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119117642] [2023-09-01 07:33:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119117642] [2023-09-01 07:33:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119117642] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:33:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793786168] [2023-09-01 07:33:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:33:40,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:33:40,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:33:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:40,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:33:40,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:33:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:33:40,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:33:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793786168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:33:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:33:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044480730] [2023-09-01 07:33:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:33:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 1375 [2023-09-01 07:33:40,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:40,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:40,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 1375 [2023-09-01 07:33:40,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:47,968 INFO L130 PetriNetUnfolder]: 43065/61753 cut-off events. [2023-09-01 07:33:47,968 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-09-01 07:33:48,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126236 conditions, 61753 events. 43065/61753 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412740 event pairs, 38250 based on Foata normal form. 1/33422 useless extension candidates. Maximal degree in co-relation 126226. Up to 61753 conditions per place. [2023-09-01 07:33:48,309 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-09-01 07:33:48,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 511 flow [2023-09-01 07:33:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1760 transitions. [2023-09-01 07:33:48,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2023-09-01 07:33:48,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1760 transitions. [2023-09-01 07:33:48,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1760 transitions. [2023-09-01 07:33:48,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:48,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1760 transitions. [2023-09-01 07:33:48,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 3 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:48,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:48,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:48,322 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1760 transitions. [2023-09-01 07:33:48,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 511 flow [2023-09-01 07:33:48,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:33:48,325 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 335 flow [2023-09-01 07:33:48,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-09-01 07:33:48,326 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-09-01 07:33:48,327 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 335 flow [2023-09-01 07:33:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:48,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:48,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:33:48,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:33:48,533 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,SelfDestructingSolverStorable11 [2023-09-01 07:33:48,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:48,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:48,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1144777850, now seen corresponding path program 2 times [2023-09-01 07:33:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045606963] [2023-09-01 07:33:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:33:48,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045606963] [2023-09-01 07:33:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045606963] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:33:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169527767] [2023-09-01 07:33:48,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:33:48,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:48,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:33:48,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:33:48,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:33:48,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:33:48,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:33:48,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:33:48,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:33:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:33:48,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:33:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169527767] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:48,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:33:48,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:33:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404654752] [2023-09-01 07:33:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:33:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:33:48,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:33:48,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-09-01 07:33:48,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:48,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:48,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-09-01 07:33:48,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:33:56,167 INFO L130 PetriNetUnfolder]: 43065/61750 cut-off events. [2023-09-01 07:33:56,167 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-09-01 07:33:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126190 conditions, 61750 events. 43065/61750 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412746 event pairs, 38250 based on Foata normal form. 3/33401 useless extension candidates. Maximal degree in co-relation 126180. Up to 61750 conditions per place. [2023-09-01 07:33:56,541 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-09-01 07:33:56,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 467 flow [2023-09-01 07:33:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:33:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:33:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-09-01 07:33:56,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-09-01 07:33:56,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-09-01 07:33:56,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-09-01 07:33:56,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:33:56,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-09-01 07:33:56,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:56,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:56,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:56,553 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 335 flow. Second operand 3 states and 1776 transitions. [2023-09-01 07:33:56,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 467 flow [2023-09-01 07:33:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 421 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-09-01 07:33:56,556 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 261 flow [2023-09-01 07:33:56,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-09-01 07:33:56,556 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-09-01 07:33:56,557 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 261 flow [2023-09-01 07:33:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:56,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:33:56,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:33:56,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:33:56,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:56,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:33:56,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:33:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1055193015, now seen corresponding path program 1 times [2023-09-01 07:33:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:33:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893025268] [2023-09-01 07:33:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:33:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:33:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:33:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893025268] [2023-09-01 07:33:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893025268] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:33:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288151039] [2023-09-01 07:33:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:33:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:33:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:33:56,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:33:56,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:33:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:33:56,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:33:56,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:33:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:33:56,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:33:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288151039] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:33:56,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:33:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 07:33:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326937800] [2023-09-01 07:33:56,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:33:56,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:33:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:33:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:33:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:33:57,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-09-01 07:33:57,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:33:57,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:33:57,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-09-01 07:33:57,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:34:04,084 INFO L130 PetriNetUnfolder]: 43064/61749 cut-off events. [2023-09-01 07:34:04,085 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-09-01 07:34:04,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126161 conditions, 61749 events. 43064/61749 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412772 event pairs, 38250 based on Foata normal form. 0/33391 useless extension candidates. Maximal degree in co-relation 126155. Up to 61744 conditions per place. [2023-09-01 07:34:04,437 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-09-01 07:34:04,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 417 flow [2023-09-01 07:34:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:34:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:34:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-09-01 07:34:04,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-09-01 07:34:04,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-09-01 07:34:04,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-09-01 07:34:04,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:34:04,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-09-01 07:34:04,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:04,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:04,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:04,452 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 261 flow. Second operand 4 states and 2300 transitions. [2023-09-01 07:34:04,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 417 flow [2023-09-01 07:34:04,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:34:04,454 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 270 flow [2023-09-01 07:34:04,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-09-01 07:34:04,455 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-09-01 07:34:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 270 flow [2023-09-01 07:34:04,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:34:04,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:34:04,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:34:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:04,662 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:34:04,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:34:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1536929800, now seen corresponding path program 1 times [2023-09-01 07:34:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:34:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725344027] [2023-09-01 07:34:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:34:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:34:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:34:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725344027] [2023-09-01 07:34:04,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725344027] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:34:04,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603944590] [2023-09-01 07:34:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:04,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:04,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:34:04,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:34:04,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:34:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:04,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:34:04,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:34:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:04,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:34:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603944590] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:34:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:34:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 07:34:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379528079] [2023-09-01 07:34:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:34:04,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:34:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:34:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:34:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:34:05,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-09-01 07:34:05,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:05,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:34:05,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-09-01 07:34:05,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:34:10,457 INFO L130 PetriNetUnfolder]: 34453/49404 cut-off events. [2023-09-01 07:34:10,457 INFO L131 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2023-09-01 07:34:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100953 conditions, 49404 events. 34453/49404 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 322680 event pairs, 30600 based on Foata normal form. 1/26721 useless extension candidates. Maximal degree in co-relation 100947. Up to 49399 conditions per place. [2023-09-01 07:34:10,744 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-09-01 07:34:10,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 430 flow [2023-09-01 07:34:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:34:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:34:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-09-01 07:34:10,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-09-01 07:34:10,748 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-09-01 07:34:10,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-09-01 07:34:10,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:34:10,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-09-01 07:34:10,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:10,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:10,757 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:10,757 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 270 flow. Second operand 4 states and 2300 transitions. [2023-09-01 07:34:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 430 flow [2023-09-01 07:34:10,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:34:10,759 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 292 flow [2023-09-01 07:34:10,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-09-01 07:34:10,760 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-09-01 07:34:10,760 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 292 flow [2023-09-01 07:34:10,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:10,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:34:10,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:34:10,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:34:10,967 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,SelfDestructingSolverStorable14 [2023-09-01 07:34:10,968 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:34:10,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:34:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash 396618935, now seen corresponding path program 1 times [2023-09-01 07:34:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:34:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062020590] [2023-09-01 07:34:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:34:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:34:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062020590] [2023-09-01 07:34:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062020590] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:34:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202744152] [2023-09-01 07:34:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:11,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:34:11,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:34:11,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:34:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:11,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:34:11,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:34:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:11,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:34:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:11,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202744152] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:34:11,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:34:11,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:34:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711421124] [2023-09-01 07:34:11,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:34:11,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:34:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:34:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:34:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:34:11,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:34:11,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:11,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:34:11,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:34:11,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:34:25,645 INFO L130 PetriNetUnfolder]: 86149/123468 cut-off events. [2023-09-01 07:34:25,645 INFO L131 PetriNetUnfolder]: For 967/967 co-relation queries the response was YES. [2023-09-01 07:34:26,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252239 conditions, 123468 events. 86149/123468 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 892226 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 252232. Up to 24717 conditions per place. [2023-09-01 07:34:26,585 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 227 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2023-09-01 07:34:26,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 260 transitions, 1244 flow [2023-09-01 07:34:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:34:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:34:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4234 transitions. [2023-09-01 07:34:26,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398961038961039 [2023-09-01 07:34:26,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4234 transitions. [2023-09-01 07:34:26,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4234 transitions. [2023-09-01 07:34:26,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:34:26,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4234 transitions. [2023-09-01 07:34:26,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 604.8571428571429) internal successors, (4234), 7 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:26,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:26,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:26,608 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 292 flow. Second operand 7 states and 4234 transitions. [2023-09-01 07:34:26,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 260 transitions, 1244 flow [2023-09-01 07:34:26,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 260 transitions, 1225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:34:26,612 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 492 flow [2023-09-01 07:34:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-09-01 07:34:26,613 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-09-01 07:34:26,613 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 492 flow [2023-09-01 07:34:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:34:26,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:34:26,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:34:26,820 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,SelfDestructingSolverStorable15 [2023-09-01 07:34:26,821 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:34:26,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:34:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 396618880, now seen corresponding path program 1 times [2023-09-01 07:34:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:34:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272243195] [2023-09-01 07:34:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:34:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:34:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272243195] [2023-09-01 07:34:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272243195] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:34:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500981832] [2023-09-01 07:34:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:26,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:26,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:34:26,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:34:26,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:34:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:27,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:34:27,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:34:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:27,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:34:27,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500981832] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:34:27,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:34:27,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:34:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509949604] [2023-09-01 07:34:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:34:27,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:34:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:34:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:34:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:34:27,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-09-01 07:34:27,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:27,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:34:27,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-09-01 07:34:27,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:34:41,362 INFO L130 PetriNetUnfolder]: 86113/123420 cut-off events. [2023-09-01 07:34:41,362 INFO L131 PetriNetUnfolder]: For 990/990 co-relation queries the response was YES. [2023-09-01 07:34:41,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252279 conditions, 123420 events. 86113/123420 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 4234. Compared 894158 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 252269. Up to 98696 conditions per place. [2023-09-01 07:34:42,165 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-09-01 07:34:42,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 757 flow [2023-09-01 07:34:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:34:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:34:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2377 transitions. [2023-09-01 07:34:42,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43218181818181817 [2023-09-01 07:34:42,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2377 transitions. [2023-09-01 07:34:42,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2377 transitions. [2023-09-01 07:34:42,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:34:42,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2377 transitions. [2023-09-01 07:34:42,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 594.25) internal successors, (2377), 4 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:42,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:42,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:42,177 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 492 flow. Second operand 4 states and 2377 transitions. [2023-09-01 07:34:42,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 757 flow [2023-09-01 07:34:42,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 727 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:34:42,181 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 405 flow [2023-09-01 07:34:42,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2023-09-01 07:34:42,181 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -2 predicate places. [2023-09-01 07:34:42,182 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 405 flow [2023-09-01 07:34:42,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:42,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:34:42,182 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:34:42,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:34:42,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:42,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:34:42,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:34:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 224174474, now seen corresponding path program 2 times [2023-09-01 07:34:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:34:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435966933] [2023-09-01 07:34:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:34:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 07:34:42,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:34:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435966933] [2023-09-01 07:34:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435966933] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:34:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245034232] [2023-09-01 07:34:42,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:34:42,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:34:42,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:34:42,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:34:42,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:34:42,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:34:42,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:34:42,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:34:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:34:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 07:34:42,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:34:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245034232] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:34:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:34:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 07:34:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270718514] [2023-09-01 07:34:42,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:34:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:34:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:34:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:34:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:34:42,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-09-01 07:34:42,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:42,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:34:42,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-09-01 07:34:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:34:56,943 INFO L130 PetriNetUnfolder]: 86113/123408 cut-off events. [2023-09-01 07:34:56,944 INFO L131 PetriNetUnfolder]: For 1049/1049 co-relation queries the response was YES. [2023-09-01 07:34:57,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252184 conditions, 123408 events. 86113/123408 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894119 event pairs, 76500 based on Foata normal form. 12/66820 useless extension candidates. Maximal degree in co-relation 252173. Up to 123384 conditions per place. [2023-09-01 07:34:57,720 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-09-01 07:34:57,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 553 flow [2023-09-01 07:34:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:34:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:34:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1770 transitions. [2023-09-01 07:34:57,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290909090909091 [2023-09-01 07:34:57,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1770 transitions. [2023-09-01 07:34:57,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1770 transitions. [2023-09-01 07:34:57,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:34:57,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1770 transitions. [2023-09-01 07:34:57,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:57,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:57,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:57,729 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 405 flow. Second operand 3 states and 1770 transitions. [2023-09-01 07:34:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 553 flow [2023-09-01 07:34:57,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 498 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-09-01 07:34:57,733 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 322 flow [2023-09-01 07:34:57,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2023-09-01 07:34:57,734 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-09-01 07:34:57,734 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 322 flow [2023-09-01 07:34:57,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:57,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:34:57,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:34:57,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 07:34:57,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 07:34:57,941 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:34:57,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:34:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 719084549, now seen corresponding path program 1 times [2023-09-01 07:34:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:34:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931605594] [2023-09-01 07:34:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:34:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:34:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:34:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:34:58,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:34:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931605594] [2023-09-01 07:34:58,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931605594] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:34:58,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:34:58,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:34:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407145541] [2023-09-01 07:34:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:34:58,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:34:58,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:34:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:34:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:34:58,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-09-01 07:34:58,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:34:58,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:34:58,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-09-01 07:34:58,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:12,040 INFO L130 PetriNetUnfolder]: 86109/123404 cut-off events. [2023-09-01 07:35:12,040 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-09-01 07:35:12,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252052 conditions, 123404 events. 86109/123404 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894005 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252045. Up to 123400 conditions per place. [2023-09-01 07:35:12,835 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 85 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-09-01 07:35:12,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 494 flow [2023-09-01 07:35:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:35:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:35:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-09-01 07:35:12,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-09-01 07:35:12,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-09-01 07:35:12,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-09-01 07:35:12,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:12,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-09-01 07:35:12,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:12,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:12,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:12,844 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 322 flow. Second operand 4 states and 2293 transitions. [2023-09-01 07:35:12,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 494 flow [2023-09-01 07:35:12,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:35:12,846 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 323 flow [2023-09-01 07:35:12,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-09-01 07:35:12,847 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-09-01 07:35:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 323 flow [2023-09-01 07:35:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:12,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:12,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:12,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 07:35:12,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:35:12,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash -718561934, now seen corresponding path program 1 times [2023-09-01 07:35:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938751425] [2023-09-01 07:35:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 07:35:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938751425] [2023-09-01 07:35:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938751425] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:12,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:12,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:35:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242858943] [2023-09-01 07:35:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:12,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:35:12,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:35:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:35:13,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-09-01 07:35:13,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:13,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:13,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-09-01 07:35:13,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:35:27,406 INFO L130 PetriNetUnfolder]: 86105/123400 cut-off events. [2023-09-01 07:35:27,406 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-09-01 07:35:27,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252049 conditions, 123400 events. 86105/123400 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894096 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252042. Up to 123384 conditions per place. [2023-09-01 07:35:28,200 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 81 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2023-09-01 07:35:28,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 493 flow [2023-09-01 07:35:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:35:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:35:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-09-01 07:35:28,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-09-01 07:35:28,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-09-01 07:35:28,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-09-01 07:35:28,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:35:28,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-09-01 07:35:28,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:28,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:28,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:28,209 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 323 flow. Second operand 4 states and 2293 transitions. [2023-09-01 07:35:28,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 493 flow [2023-09-01 07:35:28,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 487 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 07:35:28,211 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 325 flow [2023-09-01 07:35:28,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2023-09-01 07:35:28,212 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-09-01 07:35:28,212 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 325 flow [2023-09-01 07:35:28,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:28,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:35:28,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:35:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 07:35:28,213 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-09-01 07:35:28,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:35:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1289482083, now seen corresponding path program 1 times [2023-09-01 07:35:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:35:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715746585] [2023-09-01 07:35:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:35:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:35:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:35:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 07:35:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:35:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715746585] [2023-09-01 07:35:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715746585] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:35:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:35:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:35:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216215946] [2023-09-01 07:35:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:35:28,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:35:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:35:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:35:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:35:28,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-09-01 07:35:28,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 564.5) internal successors, (2258), 4 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:35:28,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:35:28,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-09-01 07:35:28,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand