./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-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-word-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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --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 07:38:53,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:38:53,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:38:53,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:38:53,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:38:53,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:38:53,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:38:53,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:38:53,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:38:53,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:38:53,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:38:53,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:38:53,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:38:53,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:38:53,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:38:53,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:38:53,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:38:53,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:38:53,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:38:53,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:38:53,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:38:53,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:38:53,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:38:53,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:38:53,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:38:53,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:38:53,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:38:53,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:38:53,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:38:53,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:38:53,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:38:53,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:38:53,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:38:53,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:38:53,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:38:53,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:38:53,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:38:53,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:38:53,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:38:53,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:38:53,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:38:53,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:38:53,772 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:38:53,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:38:53,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:38:53,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:38:53,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:38:53,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:38:53,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:38:53,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:38:53,775 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:38:53,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:38:53,775 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:38:53,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:38:53,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:38:53,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:38:53,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:38:53,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:38:53,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:53,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:38:53,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:38:53,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:38:53,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:38:53,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:38:53,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:38:54,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:38:54,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:38:54,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:38:54,037 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:38:54,037 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:38:54,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-09-01 07:38:55,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:38:55,246 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:38:55,246 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-09-01 07:38:55,251 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c23c7d23/f8716ae67ab54d79a948fba9df2ad577/FLAG5daf594ab [2023-09-01 07:38:55,624 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c23c7d23/f8716ae67ab54d79a948fba9df2ad577 [2023-09-01 07:38:55,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:38:55,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:38:55,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:55,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:38:55,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:38:55,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82c3dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55, skipping insertion in model container [2023-09-01 07:38:55,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:38:55,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:38:55,784 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-word-trans.wvr.c[3292,3305] [2023-09-01 07:38:55,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:55,804 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:38:55,844 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-word-trans.wvr.c[3292,3305] [2023-09-01 07:38:55,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:55,860 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:38:55,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55 WrapperNode [2023-09-01 07:38:55,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:55,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:55,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:38:55,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:38:55,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,912 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 187 [2023-09-01 07:38:55,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:55,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:38:55,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:38:55,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:38:55,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:38:55,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:38:55,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:38:55,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:38:55,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (1/1) ... [2023-09-01 07:38:55,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:55,991 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 07:38:56,018 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 07:38:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:38:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:38:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:38:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:38:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:38:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:38:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:38:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:38:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:38:56,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:38:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:38:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:38:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:38:56,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:38:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:38:56,046 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 07:38:56,173 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:38:56,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:38:56,519 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:38:56,527 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:38:56,528 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:38:56,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:56 BoogieIcfgContainer [2023-09-01 07:38:56,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:38:56,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:38:56,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:38:56,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:38:56,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:38:55" (1/3) ... [2023-09-01 07:38:56,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7b2395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:56, skipping insertion in model container [2023-09-01 07:38:56,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:55" (2/3) ... [2023-09-01 07:38:56,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7b2395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:56, skipping insertion in model container [2023-09-01 07:38:56,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:56" (3/3) ... [2023-09-01 07:38:56,535 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-09-01 07:38:56,540 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:38:56,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:38:56,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 07:38:56,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:38:56,663 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:38:56,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 674 flow [2023-09-01 07:38:56,821 INFO L130 PetriNetUnfolder]: 28/322 cut-off events. [2023-09-01 07:38:56,822 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:38:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 322 events. 28/322 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-09-01 07:38:56,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 674 flow [2023-09-01 07:38:56,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:56,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:38:56,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:56,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:56,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 304 transitions, 623 flow [2023-09-01 07:38:56,905 INFO L130 PetriNetUnfolder]: 27/304 cut-off events. [2023-09-01 07:38:56,905 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:38:56,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 304 events. 27/304 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-09-01 07:38:56,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2023-09-01 07:39:04,607 INFO L134 LiptonReduction]: Checked pairs total: 15141 [2023-09-01 07:39:04,607 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-09-01 07:39:04,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:39:04,632 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;@6ae97fec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:39:04,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-09-01 07:39:04,634 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:39:04,634 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:39:04,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:04,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:39:04,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:04,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash 39699, now seen corresponding path program 1 times [2023-09-01 07:39:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219086609] [2023-09-01 07:39:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:04,822 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 07:39:04,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:04,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219086609] [2023-09-01 07:39:04,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219086609] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:04,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:39:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330920205] [2023-09-01 07:39:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:04,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-09-01 07:39:04,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 07:39:04,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:04,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-09-01 07:39:04,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:06,042 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2023-09-01 07:39:06,042 INFO L131 PetriNetUnfolder]: For 588/588 co-relation queries the response was YES. [2023-09-01 07:39:06,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 82956 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2023-09-01 07:39:06,125 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-09-01 07:39:06,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2023-09-01 07:39:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-09-01 07:39:06,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117586912065439 [2023-09-01 07:39:06,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-09-01 07:39:06,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-09-01 07:39:06,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:06,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-09-01 07:39:06,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 07:39:06,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:06,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:06,153 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1001 transitions. [2023-09-01 07:39:06,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2023-09-01 07:39:06,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:39:06,174 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2023-09-01 07:39:06,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-09-01 07:39:06,178 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-09-01 07:39:06,178 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2023-09-01 07:39:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 07:39:06,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:06,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:39:06,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:39:06,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:06,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1231866, now seen corresponding path program 1 times [2023-09-01 07:39:06,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792269861] [2023-09-01 07:39:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:06,273 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 07:39:06,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:06,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792269861] [2023-09-01 07:39:06,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792269861] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531014715] [2023-09-01 07:39:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:06,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:06,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:06,282 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 07:39:06,293 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 07:39:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:06,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:06,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:06,438 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 07:39:06,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:39:06,487 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 07:39:06,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531014715] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:39:06,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:39:06,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:39:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736191150] [2023-09-01 07:39:06,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:39:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:39:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:39:06,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:39:06,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-09-01 07:39:06,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 07:39:06,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:06,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-09-01 07:39:06,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:08,769 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2023-09-01 07:39:08,770 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-09-01 07:39:08,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 231119 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2023-09-01 07:39:08,961 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-09-01 07:39:08,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2023-09-01 07:39:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:39:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:39:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2347 transitions. [2023-09-01 07:39:08,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142418930762489 [2023-09-01 07:39:08,967 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2347 transitions. [2023-09-01 07:39:08,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2347 transitions. [2023-09-01 07:39:08,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:08,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2347 transitions. [2023-09-01 07:39:08,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.2857142857143) internal successors, (2347), 7 states have internal predecessors, (2347), 0 states have call successors, (0), 0 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 07:39:08,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 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 07:39:08,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 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 07:39:08,980 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2347 transitions. [2023-09-01 07:39:08,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2023-09-01 07:39:08,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:08,985 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2023-09-01 07:39:08,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-09-01 07:39:08,986 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-09-01 07:39:08,987 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2023-09-01 07:39:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 07:39:08,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:08,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:39:08,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:09,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:09,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 38189045, now seen corresponding path program 1 times [2023-09-01 07:39:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408589744] [2023-09-01 07:39:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:39:09,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:09,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408589744] [2023-09-01 07:39:09,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408589744] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:09,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:09,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:39:09,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506319311] [2023-09-01 07:39:09,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:09,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-09-01 07:39:09,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 07:39:09,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:09,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-09-01 07:39:09,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:11,312 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2023-09-01 07:39:11,312 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-09-01 07:39:11,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 232605 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 40994 conditions per place. [2023-09-01 07:39:11,491 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-09-01 07:39:11,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 450 flow [2023-09-01 07:39:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2023-09-01 07:39:11,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-09-01 07:39:11,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2023-09-01 07:39:11,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2023-09-01 07:39:11,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:11,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2023-09-01 07:39:11,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 07:39:11,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:11,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:11,501 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 3 states and 945 transitions. [2023-09-01 07:39:11,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 450 flow [2023-09-01 07:39:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 420 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:11,504 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 274 flow [2023-09-01 07:39:11,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-09-01 07:39:11,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-09-01 07:39:11,506 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 274 flow [2023-09-01 07:39:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 07:39:11,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:11,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:39:11,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:39:11,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:11,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1954997037, now seen corresponding path program 2 times [2023-09-01 07:39:11,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:11,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640609637] [2023-09-01 07:39:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:11,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:11,600 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 07:39:11,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640609637] [2023-09-01 07:39:11,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640609637] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72475843] [2023-09-01 07:39:11,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:39:11,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:11,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:11,605 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 07:39:11,607 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 07:39:11,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:39:11,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:39:11,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:39:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:11,694 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 07:39:11,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72475843] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:11,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:11,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:39:11,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017099296] [2023-09-01 07:39:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:11,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:39:11,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 652 [2023-09-01 07:39:11,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 07:39:11,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:11,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 652 [2023-09-01 07:39:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:13,906 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2023-09-01 07:39:13,906 INFO L131 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2023-09-01 07:39:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83320 conditions, 40993 events. 30341/40993 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 232630 event pairs, 22150 based on Foata normal form. 1/20132 useless extension candidates. Maximal degree in co-relation 83308. Up to 40988 conditions per place. [2023-09-01 07:39:14,037 INFO L137 encePairwiseOnDemand]: 649/652 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-09-01 07:39:14,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 410 flow [2023-09-01 07:39:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-09-01 07:39:14,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48619631901840493 [2023-09-01 07:39:14,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-09-01 07:39:14,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-09-01 07:39:14,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:14,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-09-01 07:39:14,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 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 07:39:14,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:14,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:14,045 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 274 flow. Second operand 3 states and 951 transitions. [2023-09-01 07:39:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 410 flow [2023-09-01 07:39:14,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:14,047 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2023-09-01 07:39:14,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-09-01 07:39:14,049 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-09-01 07:39:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2023-09-01 07:39:14,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 07:39:14,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:14,050 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:39:14,054 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 07:39:14,254 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,SelfDestructingSolverStorable3 [2023-09-01 07:39:14,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:14,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 721333687, now seen corresponding path program 1 times [2023-09-01 07:39:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813150089] [2023-09-01 07:39:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:14,357 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 07:39:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813150089] [2023-09-01 07:39:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813150089] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071783057] [2023-09-01 07:39:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:14,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:14,358 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 07:39:14,371 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 07:39:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:14,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:39:14,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:14,453 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 07:39:14,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:39:14,489 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 07:39:14,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071783057] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:39:14,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:39:14,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:39:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298584779] [2023-09-01 07:39:14,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:39:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:39:14,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:39:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:39:14,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-09-01 07:39:14,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 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 07:39:14,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:14,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-09-01 07:39:14,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:19,448 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2023-09-01 07:39:19,448 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-09-01 07:39:19,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 532521 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2023-09-01 07:39:19,825 INFO L137 encePairwiseOnDemand]: 644/652 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2023-09-01 07:39:19,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2023-09-01 07:39:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:39:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:39:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4117 transitions. [2023-09-01 07:39:19,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262014314928425 [2023-09-01 07:39:19,840 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4117 transitions. [2023-09-01 07:39:19,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4117 transitions. [2023-09-01 07:39:19,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:19,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4117 transitions. [2023-09-01 07:39:19,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 343.0833333333333) internal successors, (4117), 12 states have internal predecessors, (4117), 0 states have call successors, (0), 0 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 07:39:19,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 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 07:39:19,858 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 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 07:39:19,858 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4117 transitions. [2023-09-01 07:39:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2023-09-01 07:39:19,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:19,864 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2023-09-01 07:39:19,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2023-09-01 07:39:19,865 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-09-01 07:39:19,865 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2023-09-01 07:39:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 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 07:39:19,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:19,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:19,881 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 07:39:20,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:20,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:20,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1500592319, now seen corresponding path program 1 times [2023-09-01 07:39:20,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:20,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301099140] [2023-09-01 07:39:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:20,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:20,123 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 07:39:20,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301099140] [2023-09-01 07:39:20,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301099140] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:20,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:20,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:39:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800331895] [2023-09-01 07:39:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:20,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-09-01 07:39:20,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 07:39:20,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:20,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-09-01 07:39:20,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:28,596 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2023-09-01 07:39:28,596 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-09-01 07:39:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317922 conditions, 156445 events. 115501/156445 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 4296. Compared 1037341 event pairs, 48730 based on Foata normal form. 0/78583 useless extension candidates. Maximal degree in co-relation 317903. Up to 90182 conditions per place. [2023-09-01 07:39:29,486 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-09-01 07:39:29,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 978 flow [2023-09-01 07:39:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-09-01 07:39:29,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127811860940695 [2023-09-01 07:39:29,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-09-01 07:39:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-09-01 07:39:29,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:29,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-09-01 07:39:29,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 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 07:39:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:29,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:39:29,496 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1003 transitions. [2023-09-01 07:39:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 978 flow [2023-09-01 07:39:29,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 834 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 07:39:29,501 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2023-09-01 07:39:29,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2023-09-01 07:39:29,503 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-09-01 07:39:29,503 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2023-09-01 07:39:29,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 07:39:29,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:29,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:39:29,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:29,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593717, now seen corresponding path program 1 times [2023-09-01 07:39:29,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:29,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620602186] [2023-09-01 07:39:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:29,567 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 07:39:29,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620602186] [2023-09-01 07:39:29,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620602186] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:29,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:29,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:39:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817120178] [2023-09-01 07:39:29,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:29,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:39:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:39:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:39:29,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 652 [2023-09-01 07:39:29,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 07:39:29,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:29,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 652 [2023-09-01 07:39:29,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:46,916 INFO L130 PetriNetUnfolder]: 223094/300503 cut-off events. [2023-09-01 07:39:46,916 INFO L131 PetriNetUnfolder]: For 22477/22477 co-relation queries the response was YES. [2023-09-01 07:39:47,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634815 conditions, 300503 events. 223094/300503 cut-off events. For 22477/22477 co-relation queries the response was YES. Maximal size of possible extension queue 7292. Compared 2032919 event pairs, 162656 based on Foata normal form. 0/165484 useless extension candidates. Maximal degree in co-relation 634796. Up to 145752 conditions per place. [2023-09-01 07:39:48,355 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 224 selfloop transitions, 6 changer transitions 0/230 dead transitions. [2023-09-01 07:39:48,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 230 transitions, 1400 flow [2023-09-01 07:39:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:39:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:39:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2023-09-01 07:39:48,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49171779141104294 [2023-09-01 07:39:48,359 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2023-09-01 07:39:48,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2023-09-01 07:39:48,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:48,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2023-09-01 07:39:48,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 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 07:39:48,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 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 07:39:48,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 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 07:39:48,375 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 481 flow. Second operand 5 states and 1603 transitions. [2023-09-01 07:39:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 230 transitions, 1400 flow [2023-09-01 07:39:48,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 230 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:48,415 INFO L231 Difference]: Finished difference. Result has 78 places, 107 transitions, 524 flow [2023-09-01 07:39:48,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=78, PETRI_TRANSITIONS=107} [2023-09-01 07:39:48,416 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-09-01 07:39:48,416 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 107 transitions, 524 flow [2023-09-01 07:39:48,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 07:39:48,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:48,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:39:48,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:39:48,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593589, now seen corresponding path program 1 times [2023-09-01 07:39:48,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328519431] [2023-09-01 07:39:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:48,473 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 07:39:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:48,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328519431] [2023-09-01 07:39:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328519431] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:48,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:39:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846432800] [2023-09-01 07:39:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:39:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:39:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:39:48,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 652 [2023-09-01 07:39:48,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 107 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 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 07:39:48,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:48,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 652 [2023-09-01 07:39:48,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:05,374 INFO L130 PetriNetUnfolder]: 207538/280675 cut-off events. [2023-09-01 07:40:05,374 INFO L131 PetriNetUnfolder]: For 41943/41943 co-relation queries the response was YES. [2023-09-01 07:40:06,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598358 conditions, 280675 events. 207538/280675 cut-off events. For 41943/41943 co-relation queries the response was YES. Maximal size of possible extension queue 6679. Compared 1902628 event pairs, 153224 based on Foata normal form. 8188/171804 useless extension candidates. Maximal degree in co-relation 598335. Up to 244620 conditions per place. [2023-09-01 07:40:07,137 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 124 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2023-09-01 07:40:07,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 150 transitions, 924 flow [2023-09-01 07:40:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:40:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:40:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2023-09-01 07:40:07,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781441717791411 [2023-09-01 07:40:07,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2023-09-01 07:40:07,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2023-09-01 07:40:07,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:07,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2023-09-01 07:40:07,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 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 07:40:07,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 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 07:40:07,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 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 07:40:07,145 INFO L175 Difference]: Start difference. First operand has 78 places, 107 transitions, 524 flow. Second operand 4 states and 1247 transitions. [2023-09-01 07:40:07,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 150 transitions, 924 flow [2023-09-01 07:40:07,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 150 transitions, 916 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:07,172 INFO L231 Difference]: Finished difference. Result has 78 places, 105 transitions, 558 flow [2023-09-01 07:40:07,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=78, PETRI_TRANSITIONS=105} [2023-09-01 07:40:07,173 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-09-01 07:40:07,173 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 105 transitions, 558 flow [2023-09-01 07:40:07,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 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 07:40:07,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:07,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:07,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:40:07,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:07,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:07,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1792992732, now seen corresponding path program 1 times [2023-09-01 07:40:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007652097] [2023-09-01 07:40:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:07,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:07,244 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 07:40:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007652097] [2023-09-01 07:40:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007652097] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852705143] [2023-09-01 07:40:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:07,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:07,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:07,246 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 07:40:07,248 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 07:40:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:07,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:40:07,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:07,357 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 07:40:07,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852705143] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:40:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:40:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446239917] [2023-09-01 07:40:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:40:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:40:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:40:07,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 652 [2023-09-01 07:40:07,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 105 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 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 07:40:07,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:07,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 652 [2023-09-01 07:40:07,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:20,597 INFO L130 PetriNetUnfolder]: 172695/233222 cut-off events. [2023-09-01 07:40:20,597 INFO L131 PetriNetUnfolder]: For 22655/22655 co-relation queries the response was YES. [2023-09-01 07:40:21,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492617 conditions, 233222 events. 172695/233222 cut-off events. For 22655/22655 co-relation queries the response was YES. Maximal size of possible extension queue 5630. Compared 1542671 event pairs, 124775 based on Foata normal form. 3432/141158 useless extension candidates. Maximal degree in co-relation 492594. Up to 233210 conditions per place. [2023-09-01 07:40:21,844 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 91 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2023-09-01 07:40:21,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 756 flow [2023-09-01 07:40:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:40:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:40:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1252 transitions. [2023-09-01 07:40:21,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48006134969325154 [2023-09-01 07:40:21,847 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1252 transitions. [2023-09-01 07:40:21,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1252 transitions. [2023-09-01 07:40:21,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:21,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1252 transitions. [2023-09-01 07:40:21,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 07:40:21,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 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 07:40:21,852 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 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 07:40:21,852 INFO L175 Difference]: Start difference. First operand has 78 places, 105 transitions, 558 flow. Second operand 4 states and 1252 transitions. [2023-09-01 07:40:21,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 756 flow [2023-09-01 07:40:21,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 727 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:40:21,872 INFO L231 Difference]: Finished difference. Result has 76 places, 103 transitions, 545 flow [2023-09-01 07:40:21,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=76, PETRI_TRANSITIONS=103} [2023-09-01 07:40:21,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-09-01 07:40:21,873 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 103 transitions, 545 flow [2023-09-01 07:40:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 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 07:40:21,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:21,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:21,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:40:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:22,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:22,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711662, now seen corresponding path program 1 times [2023-09-01 07:40:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127033824] [2023-09-01 07:40:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127033824] [2023-09-01 07:40:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127033824] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:22,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980779528] [2023-09-01 07:40:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:22,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-09-01 07:40:22,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 103 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 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 07:40:22,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-09-01 07:40:22,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:36,671 INFO L130 PetriNetUnfolder]: 176559/240398 cut-off events. [2023-09-01 07:40:36,671 INFO L131 PetriNetUnfolder]: For 4587/4587 co-relation queries the response was YES. [2023-09-01 07:40:37,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503361 conditions, 240398 events. 176559/240398 cut-off events. For 4587/4587 co-relation queries the response was YES. Maximal size of possible extension queue 5927. Compared 1729426 event pairs, 17595 based on Foata normal form. 0/143798 useless extension candidates. Maximal degree in co-relation 503339. Up to 206310 conditions per place. [2023-09-01 07:40:38,215 INFO L137 encePairwiseOnDemand]: 650/652 looper letters, 130 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-09-01 07:40:38,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 866 flow [2023-09-01 07:40:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-09-01 07:40:38,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051124744376279 [2023-09-01 07:40:38,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-09-01 07:40:38,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-09-01 07:40:38,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:38,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-09-01 07:40:38,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:38,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:40:38,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 07:40:38,232 INFO L175 Difference]: Start difference. First operand has 76 places, 103 transitions, 545 flow. Second operand 3 states and 988 transitions. [2023-09-01 07:40:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 866 flow [2023-09-01 07:40:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 853 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:38,251 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 530 flow [2023-09-01 07:40:38,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2023-09-01 07:40:38,252 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-09-01 07:40:38,252 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 530 flow [2023-09-01 07:40:38,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 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 07:40:38,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:38,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:40:38,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:38,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711611, now seen corresponding path program 1 times [2023-09-01 07:40:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:38,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511035374] [2023-09-01 07:40:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:40:38,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:38,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511035374] [2023-09-01 07:40:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511035374] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:40:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882540661] [2023-09-01 07:40:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:38,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:40:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:40:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:38,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 652 [2023-09-01 07:40:38,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 530 flow. Second operand has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 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 07:40:38,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:38,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 652 [2023-09-01 07:40:38,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:47,670 INFO L130 PetriNetUnfolder]: 115935/159326 cut-off events. [2023-09-01 07:40:47,670 INFO L131 PetriNetUnfolder]: For 15824/15824 co-relation queries the response was YES. [2023-09-01 07:40:48,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336428 conditions, 159326 events. 115935/159326 cut-off events. For 15824/15824 co-relation queries the response was YES. Maximal size of possible extension queue 4029. Compared 1066218 event pairs, 71495 based on Foata normal form. 0/95750 useless extension candidates. Maximal degree in co-relation 336407. Up to 114985 conditions per place. [2023-09-01 07:40:48,517 INFO L137 encePairwiseOnDemand]: 644/652 looper letters, 246 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2023-09-01 07:40:48,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 264 transitions, 1588 flow [2023-09-01 07:40:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:40:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:40:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2205 transitions. [2023-09-01 07:40:48,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-09-01 07:40:48,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2205 transitions. [2023-09-01 07:40:48,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2205 transitions. [2023-09-01 07:40:48,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:48,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2205 transitions. [2023-09-01 07:40:48,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 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 07:40:48,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 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 07:40:48,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 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 07:40:48,529 INFO L175 Difference]: Start difference. First operand has 75 places, 102 transitions, 530 flow. Second operand 7 states and 2205 transitions. [2023-09-01 07:40:48,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 264 transitions, 1588 flow [2023-09-01 07:40:48,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 264 transitions, 1585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:48,562 INFO L231 Difference]: Finished difference. Result has 84 places, 115 transitions, 712 flow [2023-09-01 07:40:48,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=84, PETRI_TRANSITIONS=115} [2023-09-01 07:40:48,562 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-09-01 07:40:48,562 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 115 transitions, 712 flow [2023-09-01 07:40:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 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 07:40:48,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:48,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:40:48,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:40:48,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924747, now seen corresponding path program 1 times [2023-09-01 07:40:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438585971] [2023-09-01 07:40:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:48,634 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 07:40:48,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438585971] [2023-09-01 07:40:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438585971] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:48,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:40:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843221746] [2023-09-01 07:40:48,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:48,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:40:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:40:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:48,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 652 [2023-09-01 07:40:48,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 712 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 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 07:40:48,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:48,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 652 [2023-09-01 07:40:48,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:07,711 INFO L130 PetriNetUnfolder]: 217086/297953 cut-off events. [2023-09-01 07:41:07,711 INFO L131 PetriNetUnfolder]: For 59215/59215 co-relation queries the response was YES. [2023-09-01 07:41:08,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651885 conditions, 297953 events. 217086/297953 cut-off events. For 59215/59215 co-relation queries the response was YES. Maximal size of possible extension queue 7324. Compared 2116727 event pairs, 153296 based on Foata normal form. 0/187205 useless extension candidates. Maximal degree in co-relation 651859. Up to 142377 conditions per place. [2023-09-01 07:41:09,772 INFO L137 encePairwiseOnDemand]: 646/652 looper letters, 219 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2023-09-01 07:41:09,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 236 transitions, 1582 flow [2023-09-01 07:41:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:41:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:41:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1880 transitions. [2023-09-01 07:41:09,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48057259713701433 [2023-09-01 07:41:09,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1880 transitions. [2023-09-01 07:41:09,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1880 transitions. [2023-09-01 07:41:09,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:09,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1880 transitions. [2023-09-01 07:41:09,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.3333333333333) internal successors, (1880), 6 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 07:41:09,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 07:41:09,781 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 07:41:09,782 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 712 flow. Second operand 6 states and 1880 transitions. [2023-09-01 07:41:09,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 236 transitions, 1582 flow [2023-09-01 07:41:09,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 236 transitions, 1579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:41:09,884 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 783 flow [2023-09-01 07:41:09,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2023-09-01 07:41:09,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-09-01 07:41:09,884 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 783 flow [2023-09-01 07:41:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 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 07:41:09,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:09,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:09,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:41:09,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:41:09,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924854, now seen corresponding path program 1 times [2023-09-01 07:41:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934547555] [2023-09-01 07:41:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:09,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:09,968 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 07:41:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934547555] [2023-09-01 07:41:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934547555] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:09,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:09,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:41:09,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031207131] [2023-09-01 07:41:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:09,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:41:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:41:09,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:41:10,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 652 [2023-09-01 07:41:10,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 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 07:41:10,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:10,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 652 [2023-09-01 07:41:10,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:41:29,423 INFO L130 PetriNetUnfolder]: 215358/295545 cut-off events. [2023-09-01 07:41:29,423 INFO L131 PetriNetUnfolder]: For 76094/76094 co-relation queries the response was YES. [2023-09-01 07:41:30,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664310 conditions, 295545 events. 215358/295545 cut-off events. For 76094/76094 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 2092344 event pairs, 152574 based on Foata normal form. 680/197225 useless extension candidates. Maximal degree in co-relation 664282. Up to 258803 conditions per place. [2023-09-01 07:41:31,297 INFO L137 encePairwiseOnDemand]: 646/652 looper letters, 144 selfloop transitions, 38 changer transitions 0/182 dead transitions. [2023-09-01 07:41:31,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 182 transitions, 1327 flow [2023-09-01 07:41:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:41:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:41:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1835 transitions. [2023-09-01 07:41:31,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690695296523517 [2023-09-01 07:41:31,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1835 transitions. [2023-09-01 07:41:31,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1835 transitions. [2023-09-01 07:41:31,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:41:31,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1835 transitions. [2023-09-01 07:41:31,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 0 states have call successors, (0), 0 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 07:41:31,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 07:41:31,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 07:41:31,307 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 783 flow. Second operand 6 states and 1835 transitions. [2023-09-01 07:41:31,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 182 transitions, 1327 flow [2023-09-01 07:41:31,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 182 transitions, 1321 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-09-01 07:41:31,425 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 933 flow [2023-09-01 07:41:31,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=933, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2023-09-01 07:41:31,425 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2023-09-01 07:41:31,426 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 933 flow [2023-09-01 07:41:31,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 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 07:41:31,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:41:31,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:41:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:41:31,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-09-01 07:41:31,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:41:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924796, now seen corresponding path program 1 times [2023-09-01 07:41:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:41:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641939146] [2023-09-01 07:41:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:41:31,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:41:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:41:31,477 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 07:41:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:41:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641939146] [2023-09-01 07:41:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641939146] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:41:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:41:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:41:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592846272] [2023-09-01 07:41:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:41:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:41:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:41:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:41:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:41:31,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-09-01 07:41:31,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 933 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 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 07:41:31,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:41:31,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-09-01 07:41:31,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand