./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -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 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:46:36,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:46:36,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:46:36,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:46:36,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:46:36,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:46:36,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:46:36,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:46:36,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:46:36,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:46:36,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:46:36,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:46:36,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:46:36,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:46:36,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:46:36,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:46:36,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:46:36,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:46:36,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:46:36,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:46:36,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:46:36,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:46:36,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:46:36,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:46:36,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:46:36,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:46:36,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:46:36,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:46:36,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:46:36,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:46:36,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:46:36,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:46:36,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:46:36,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:46:36,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:46:36,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:46:36,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:46:36,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:46:36,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:46:36,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:46:36,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:46:36,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:46:36,179 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:46:36,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:46:36,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:46:36,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:46:36,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:46:36,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:46:36,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:46:36,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:46:36,185 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:46:36,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:46:36,186 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:46:36,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:46:36,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:46:36,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:46:36,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:46:36,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:46:36,188 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:46:36,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:46:36,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:46:36,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:46:36,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:46:36,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:46:36,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:46:36,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:46:36,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:46:36,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:46:36,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:46:36,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:46:36,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:46:36,191 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:46:36,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:46:36,191 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:46:36,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:46:36,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:46:36,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:46:36,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:46:36,521 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:46:36,521 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:46:36,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-30 12:46:37,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:46:37,864 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:46:37,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2023-08-30 12:46:37,890 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196b4deef/a44761359b834c97afc199d01e1ad068/FLAGd35c945c6 [2023-08-30 12:46:37,904 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196b4deef/a44761359b834c97afc199d01e1ad068 [2023-08-30 12:46:37,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:46:37,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:46:37,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:46:37,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:46:37,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:46:37,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:46:37" (1/1) ... [2023-08-30 12:46:37,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a3470f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:37, skipping insertion in model container [2023-08-30 12:46:37,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:46:37" (1/1) ... [2023-08-30 12:46:37,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:46:37,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:46:38,260 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2023-08-30 12:46:38,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:46:38,303 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:46:38,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i[41530,41543] [2023-08-30 12:46:38,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:46:38,462 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:46:38,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38 WrapperNode [2023-08-30 12:46:38,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:46:38,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:46:38,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:46:38,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:46:38,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,538 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-08-30 12:46:38,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:46:38,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:46:38,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:46:38,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:46:38,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:46:38,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:46:38,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:46:38,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:46:38,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (1/1) ... [2023-08-30 12:46:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:46:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:38,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:46:38,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:46:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:46:38,678 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:46:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:46:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:46:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:46:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:46:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:46:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:46:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:46:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:46:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:46:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:46:38,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:46:38,685 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:46:38,849 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:46:38,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:46:39,108 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:46:39,121 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:46:39,121 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:46:39,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:46:39 BoogieIcfgContainer [2023-08-30 12:46:39,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:46:39,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:46:39,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:46:39,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:46:39,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:46:37" (1/3) ... [2023-08-30 12:46:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d764f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:46:39, skipping insertion in model container [2023-08-30 12:46:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:46:38" (2/3) ... [2023-08-30 12:46:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d764f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:46:39, skipping insertion in model container [2023-08-30 12:46:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:46:39" (3/3) ... [2023-08-30 12:46:39,130 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-08-30 12:46:39,137 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:46:39,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:46:39,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:46:39,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:46:39,282 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:46:39,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 12:46:39,407 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-08-30 12:46:39,408 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:46:39,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:46:39,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 12:46:39,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-08-30 12:46:39,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:46:39,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 12:46:39,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 12:46:39,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-08-30 12:46:39,504 INFO L130 PetriNetUnfolder]: 10/154 cut-off events. [2023-08-30 12:46:39,504 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:46:39,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:46:39,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 12:46:42,831 INFO L134 LiptonReduction]: Checked pairs total: 12122 [2023-08-30 12:46:42,832 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 12:46:42,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:46:42,848 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;@305150d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:46:42,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:46:42,861 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 12:46:42,861 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:46:42,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:42,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:42,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:42,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:42,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1379937117, now seen corresponding path program 1 times [2023-08-30 12:46:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502977094] [2023-08-30 12:46:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502977094] [2023-08-30 12:46:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502977094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:43,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:43,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555869227] [2023-08-30 12:46:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:43,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:43,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 306 [2023-08-30 12:46:43,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:43,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 306 [2023-08-30 12:46:43,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:43,477 INFO L130 PetriNetUnfolder]: 1105/1816 cut-off events. [2023-08-30 12:46:43,477 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-30 12:46:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1816 events. 1105/1816 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 432 based on Foata normal form. 30/1275 useless extension candidates. Maximal degree in co-relation 3420. Up to 1222 conditions per place. [2023-08-30 12:46:43,487 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 12:46:43,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-08-30 12:46:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 12:46:43,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 12:46:43,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 12:46:43,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 12:46:43,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:43,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 12:46:43,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,514 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 506 transitions. [2023-08-30 12:46:43,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-08-30 12:46:43,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:46:43,518 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 12:46:43,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 12:46:43,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 12:46:43,523 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 12:46:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:43,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:46:43,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:43,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash -595359307, now seen corresponding path program 1 times [2023-08-30 12:46:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628470878] [2023-08-30 12:46:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:43,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628470878] [2023-08-30 12:46:43,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628470878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:43,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:43,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242313572] [2023-08-30 12:46:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:43,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:46:43,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:43,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:46:43,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:43,916 INFO L130 PetriNetUnfolder]: 1668/2831 cut-off events. [2023-08-30 12:46:43,917 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 12:46:43,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2831 events. 1668/2831 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14796 event pairs, 835 based on Foata normal form. 0/2211 useless extension candidates. Maximal degree in co-relation 5606. Up to 1755 conditions per place. [2023-08-30 12:46:43,929 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 12:46:43,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-08-30 12:46:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-08-30 12:46:43,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675381263616558 [2023-08-30 12:46:43,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-08-30 12:46:43,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-08-30 12:46:43,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:43,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-08-30 12:46:43,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,940 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 521 transitions. [2023-08-30 12:46:43,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-08-30 12:46:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:43,945 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 12:46:43,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 12:46:43,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 12:46:43,946 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 12:46:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:43,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:46:43,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:43,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 510376855, now seen corresponding path program 1 times [2023-08-30 12:46:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698280354] [2023-08-30 12:46:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698280354] [2023-08-30 12:46:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698280354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:44,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:44,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589142897] [2023-08-30 12:46:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:44,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:44,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:46:44,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:44,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:46:44,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:44,403 INFO L130 PetriNetUnfolder]: 2077/3384 cut-off events. [2023-08-30 12:46:44,404 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-08-30 12:46:44,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18449 event pairs, 1125 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-08-30 12:46:44,422 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 12:46:44,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-08-30 12:46:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 12:46:44,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642701525054467 [2023-08-30 12:46:44,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 12:46:44,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 12:46:44,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:44,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 12:46:44,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,429 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 518 transitions. [2023-08-30 12:46:44,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-08-30 12:46:44,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:44,431 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 12:46:44,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 12:46:44,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:46:44,432 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 12:46:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:44,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:44,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:46:44,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:44,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768095, now seen corresponding path program 1 times [2023-08-30 12:46:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612595563] [2023-08-30 12:46:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612595563] [2023-08-30 12:46:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612595563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:44,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026394148] [2023-08-30 12:46:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:44,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:46:44,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:44,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:46:44,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:44,787 INFO L130 PetriNetUnfolder]: 1793/3144 cut-off events. [2023-08-30 12:46:44,788 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 12:46:44,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17827 event pairs, 95 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6840. Up to 2734 conditions per place. [2023-08-30 12:46:44,804 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 12:46:44,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 313 flow [2023-08-30 12:46:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 12:46:44,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 12:46:44,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 12:46:44,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 12:46:44,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:44,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 12:46:44,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,816 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 506 transitions. [2023-08-30 12:46:44,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 313 flow [2023-08-30 12:46:44,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:44,820 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 12:46:44,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 12:46:44,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:46:44,822 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 12:46:44,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:44,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:44,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:46:44,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:44,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768193, now seen corresponding path program 1 times [2023-08-30 12:46:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506912414] [2023-08-30 12:46:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:46:44,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506912414] [2023-08-30 12:46:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506912414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:44,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:44,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85399433] [2023-08-30 12:46:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:44,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:44,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:44,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 12:46:44,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:44,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:44,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 12:46:44,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:45,095 INFO L130 PetriNetUnfolder]: 1680/2953 cut-off events. [2023-08-30 12:46:45,095 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 12:46:45,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2953 events. 1680/2953 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16501 event pairs, 305 based on Foata normal form. 0/2659 useless extension candidates. Maximal degree in co-relation 6342. Up to 2083 conditions per place. [2023-08-30 12:46:45,111 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 56 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 12:46:45,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 309 flow [2023-08-30 12:46:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 12:46:45,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479302832244008 [2023-08-30 12:46:45,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 12:46:45,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 12:46:45,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:45,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 12:46:45,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:45,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:45,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:45,130 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 503 transitions. [2023-08-30 12:46:45,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 309 flow [2023-08-30 12:46:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:45,132 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 12:46:45,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 12:46:45,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:46:45,133 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 12:46:45,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:45,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:45,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:46:45,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:45,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1231784516, now seen corresponding path program 1 times [2023-08-30 12:46:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397860598] [2023-08-30 12:46:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397860598] [2023-08-30 12:46:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397860598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106424144] [2023-08-30 12:46:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:45,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:45,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:46:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:45,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:46:45,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:45,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106424144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:45,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 12:46:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059254270] [2023-08-30 12:46:45,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:45,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:46:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:46:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:46:45,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:46:45,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:45,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:45,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:46:45,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:46,297 INFO L130 PetriNetUnfolder]: 4162/6891 cut-off events. [2023-08-30 12:46:46,297 INFO L131 PetriNetUnfolder]: For 3792/3792 co-relation queries the response was YES. [2023-08-30 12:46:46,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 6891 events. 4162/6891 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39087 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16768. Up to 2039 conditions per place. [2023-08-30 12:46:46,330 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 12:46:46,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 12:46:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:46:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:46:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-08-30 12:46:46,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175070028011205 [2023-08-30 12:46:46,336 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-08-30 12:46:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-08-30 12:46:46,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:46,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-08-30 12:46:46,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,348 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,348 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2217 transitions. [2023-08-30 12:46:46,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 12:46:46,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:46,363 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 12:46:46,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 12:46:46,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 12:46:46,365 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 12:46:46,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:46,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:46,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:46,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:46:46,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:46,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1723074253, now seen corresponding path program 1 times [2023-08-30 12:46:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:46,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865286389] [2023-08-30 12:46:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:46,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:46,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865286389] [2023-08-30 12:46:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865286389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:46,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:46:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828137317] [2023-08-30 12:46:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:46,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:46,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 306 [2023-08-30 12:46:46,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:46,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 306 [2023-08-30 12:46:46,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:46,957 INFO L130 PetriNetUnfolder]: 1910/3279 cut-off events. [2023-08-30 12:46:46,958 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 12:46:46,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17380 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 9336. Up to 2259 conditions per place. [2023-08-30 12:46:46,977 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 12:46:46,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-08-30 12:46:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 12:46:46,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 12:46:46,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 12:46:46,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 12:46:46,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:46,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 12:46:46,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:46,983 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 496 transitions. [2023-08-30 12:46:46,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-08-30 12:46:46,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 12:46:46,998 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 12:46:46,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 12:46:46,999 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 12:46:46,999 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 12:46:47,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:47,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:47,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:46:47,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:47,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -470870337, now seen corresponding path program 1 times [2023-08-30 12:46:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542981629] [2023-08-30 12:46:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:47,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542981629] [2023-08-30 12:46:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542981629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974883008] [2023-08-30 12:46:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:47,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:47,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:47,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:47,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:46:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:47,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:46:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:47,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:46:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974883008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:47,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:46:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 12:46:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338796513] [2023-08-30 12:46:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:46:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:46:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:46:47,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:46:47,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:47,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:46:47,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:47,567 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 12:46:47,567 INFO L131 PetriNetUnfolder]: For 3013/3013 co-relation queries the response was YES. [2023-08-30 12:46:47,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15734 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 12:46:47,583 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 12:46:47,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 12:46:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:46:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:46:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-08-30 12:46:47,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070806100217865 [2023-08-30 12:46:47,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-08-30 12:46:47,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-08-30 12:46:47,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:47,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-08-30 12:46:47,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,592 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 931 transitions. [2023-08-30 12:46:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 12:46:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:47,598 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 12:46:47,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 12:46:47,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:46:47,599 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 12:46:47,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:47,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:46:47,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:47,804 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,SelfDestructingSolverStorable7 [2023-08-30 12:46:47,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:47,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -334382920, now seen corresponding path program 1 times [2023-08-30 12:46:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935186326] [2023-08-30 12:46:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:47,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935186326] [2023-08-30 12:46:47,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935186326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:47,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:47,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:47,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775346645] [2023-08-30 12:46:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:47,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:47,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 12:46:47,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:47,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:47,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 12:46:47,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:48,161 INFO L130 PetriNetUnfolder]: 1584/2841 cut-off events. [2023-08-30 12:46:48,161 INFO L131 PetriNetUnfolder]: For 3626/3630 co-relation queries the response was YES. [2023-08-30 12:46:48,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14188 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-08-30 12:46:48,179 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 12:46:48,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-08-30 12:46:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 12:46:48,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348583877995643 [2023-08-30 12:46:48,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 12:46:48,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 12:46:48,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:48,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 12:46:48,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,186 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 491 transitions. [2023-08-30 12:46:48,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-08-30 12:46:48,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:46:48,194 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-08-30 12:46:48,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-08-30 12:46:48,195 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 12:46:48,195 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-08-30 12:46:48,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:48,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:46:48,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:46:48,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:48,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash -334382869, now seen corresponding path program 1 times [2023-08-30 12:46:48,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:48,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002628258] [2023-08-30 12:46:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:48,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:46:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002628258] [2023-08-30 12:46:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002628258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:48,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:46:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556316055] [2023-08-30 12:46:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:46:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:46:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:46:48,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 12:46:48,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:48,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 12:46:48,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:48,524 INFO L130 PetriNetUnfolder]: 1421/2560 cut-off events. [2023-08-30 12:46:48,524 INFO L131 PetriNetUnfolder]: For 3186/3190 co-relation queries the response was YES. [2023-08-30 12:46:48,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 2560 events. 1421/2560 cut-off events. For 3186/3190 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12303 event pairs, 395 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-08-30 12:46:48,539 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 12:46:48,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-08-30 12:46:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:46:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:46:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 12:46:48,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 12:46:48,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 12:46:48,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 12:46:48,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:48,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 12:46:48,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,545 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 496 transitions. [2023-08-30 12:46:48,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-08-30 12:46:48,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:48,552 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-08-30 12:46:48,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 12:46:48,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:46:48,553 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-08-30 12:46:48,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:48,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:48,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:46:48,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:48,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash -591784532, now seen corresponding path program 1 times [2023-08-30 12:46:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536843869] [2023-08-30 12:46:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536843869] [2023-08-30 12:46:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536843869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:48,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:46:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664001048] [2023-08-30 12:46:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:46:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:46:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:46:48,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 306 [2023-08-30 12:46:48,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:48,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 306 [2023-08-30 12:46:48,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:48,917 INFO L130 PetriNetUnfolder]: 1424/2553 cut-off events. [2023-08-30 12:46:48,917 INFO L131 PetriNetUnfolder]: For 4190/4190 co-relation queries the response was YES. [2023-08-30 12:46:48,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12080 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7946. Up to 2415 conditions per place. [2023-08-30 12:46:48,929 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-08-30 12:46:48,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-08-30 12:46:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:46:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:46:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 12:46:48,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089869281045751 [2023-08-30 12:46:48,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 12:46:48,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 12:46:48,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:48,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 12:46:48,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,936 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 623 transitions. [2023-08-30 12:46:48,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-08-30 12:46:48,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:48,943 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-08-30 12:46:48,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 12:46:48,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 12:46:48,944 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-08-30 12:46:48,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:48,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:48,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:46:48,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:48,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1049374055, now seen corresponding path program 1 times [2023-08-30 12:46:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:48,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119117642] [2023-08-30 12:46:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119117642] [2023-08-30 12:46:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119117642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535410421] [2023-08-30 12:46:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:49,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:49,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:46:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:49,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:46:49,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:49,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:46:49,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535410421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:49,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:46:49,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 12:46:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022467419] [2023-08-30 12:46:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:49,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:46:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:46:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:46:49,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 306 [2023-08-30 12:46:49,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:49,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 306 [2023-08-30 12:46:49,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:49,479 INFO L130 PetriNetUnfolder]: 1361/2424 cut-off events. [2023-08-30 12:46:49,480 INFO L131 PetriNetUnfolder]: For 4092/4092 co-relation queries the response was YES. [2023-08-30 12:46:49,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10945 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7743. Up to 1340 conditions per place. [2023-08-30 12:46:49,494 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-08-30 12:46:49,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 784 flow [2023-08-30 12:46:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:46:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:46:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2023-08-30 12:46:49,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782135076252726 [2023-08-30 12:46:49,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2023-08-30 12:46:49,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2023-08-30 12:46:49,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:49,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2023-08-30 12:46:49,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,503 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,503 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 914 transitions. [2023-08-30 12:46:49,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 784 flow [2023-08-30 12:46:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:46:49,511 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-08-30 12:46:49,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 12:46:49,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 12:46:49,512 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-08-30 12:46:49,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:49,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:49,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 12:46:49,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:49,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:49,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:49,719 INFO L85 PathProgramCache]: Analyzing trace with hash -733508628, now seen corresponding path program 1 times [2023-08-30 12:46:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702323070] [2023-08-30 12:46:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702323070] [2023-08-30 12:46:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702323070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:49,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:46:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657073795] [2023-08-30 12:46:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:49,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:46:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:46:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:46:49,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:46:49,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:49,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:49,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:46:49,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:50,121 INFO L130 PetriNetUnfolder]: 1410/2523 cut-off events. [2023-08-30 12:46:50,122 INFO L131 PetriNetUnfolder]: For 4800/4800 co-relation queries the response was YES. [2023-08-30 12:46:50,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 2523 events. 1410/2523 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11570 event pairs, 275 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8322. Up to 1338 conditions per place. [2023-08-30 12:46:50,136 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 87 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2023-08-30 12:46:50,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 940 flow [2023-08-30 12:46:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:46:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:46:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2023-08-30 12:46:50,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-08-30 12:46:50,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2023-08-30 12:46:50,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2023-08-30 12:46:50,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:50,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2023-08-30 12:46:50,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:50,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:50,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:50,143 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 5 states and 771 transitions. [2023-08-30 12:46:50,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 940 flow [2023-08-30 12:46:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 931 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 12:46:50,152 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 612 flow [2023-08-30 12:46:50,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 12:46:50,152 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 12:46:50,153 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 612 flow [2023-08-30 12:46:50,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:50,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:50,153 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 12:46:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:46:50,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:50,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1545815804, now seen corresponding path program 1 times [2023-08-30 12:46:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:50,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415708534] [2023-08-30 12:46:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:50,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415708534] [2023-08-30 12:46:50,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415708534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292239976] [2023-08-30 12:46:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:50,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:50,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:50,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:46:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:50,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:46:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:50,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292239976] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:50,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 12:46:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143417395] [2023-08-30 12:46:50,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:46:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:46:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:46:50,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:46:50,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:50,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:50,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:46:50,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:51,346 INFO L130 PetriNetUnfolder]: 2450/4359 cut-off events. [2023-08-30 12:46:51,347 INFO L131 PetriNetUnfolder]: For 13104/13104 co-relation queries the response was YES. [2023-08-30 12:46:51,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15858 conditions, 4359 events. 2450/4359 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19534 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15200. Up to 873 conditions per place. [2023-08-30 12:46:51,374 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-08-30 12:46:51,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2626 flow [2023-08-30 12:46:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:46:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:46:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2023-08-30 12:46:51,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046439628482973 [2023-08-30 12:46:51,381 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2023-08-30 12:46:51,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2023-08-30 12:46:51,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:51,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2023-08-30 12:46:51,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:51,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:51,396 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:51,396 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 612 flow. Second operand 19 states and 2934 transitions. [2023-08-30 12:46:51,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2626 flow [2023-08-30 12:46:51,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 2606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:46:51,411 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 1228 flow [2023-08-30 12:46:51,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-30 12:46:51,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2023-08-30 12:46:51,412 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 1228 flow [2023-08-30 12:46:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:51,414 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:51,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:51,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:51,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:51,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash 921312875, now seen corresponding path program 2 times [2023-08-30 12:46:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417945690] [2023-08-30 12:46:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:51,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:51,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417945690] [2023-08-30 12:46:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417945690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:46:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:46:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 12:46:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603944590] [2023-08-30 12:46:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:46:51,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:46:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:46:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:46:51,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:46:51,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:51,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:51,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:46:51,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:52,327 INFO L130 PetriNetUnfolder]: 2313/4164 cut-off events. [2023-08-30 12:46:52,328 INFO L131 PetriNetUnfolder]: For 14098/14098 co-relation queries the response was YES. [2023-08-30 12:46:52,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 4164 events. 2313/4164 cut-off events. For 14098/14098 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18763 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 14958. Up to 2986 conditions per place. [2023-08-30 12:46:52,352 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 70 selfloop transitions, 54 changer transitions 0/125 dead transitions. [2023-08-30 12:46:52,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1405 flow [2023-08-30 12:46:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:46:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:46:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-08-30 12:46:52,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599673202614379 [2023-08-30 12:46:52,360 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-08-30 12:46:52,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-08-30 12:46:52,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:52,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-08-30 12:46:52,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:52,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:52,369 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:52,369 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 1228 flow. Second operand 8 states and 1126 transitions. [2023-08-30 12:46:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1405 flow [2023-08-30 12:46:52,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1231 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-30 12:46:52,397 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 937 flow [2023-08-30 12:46:52,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-30 12:46:52,397 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 12:46:52,398 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 937 flow [2023-08-30 12:46:52,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:52,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:52,398 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:46:52,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:52,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash 921312938, now seen corresponding path program 2 times [2023-08-30 12:46:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108996499] [2023-08-30 12:46:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:46:52,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:52,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108996499] [2023-08-30 12:46:52,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108996499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:52,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754544486] [2023-08-30 12:46:52,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:46:52,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:52,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:52,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:52,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:46:52,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:46:52,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:46:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:52,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:52,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754544486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:52,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-08-30 12:46:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148578109] [2023-08-30 12:46:52,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:46:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:52,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:46:52,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:46:52,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:46:52,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 937 flow. Second operand has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:52,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:52,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:46:52,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:53,687 INFO L130 PetriNetUnfolder]: 2908/5229 cut-off events. [2023-08-30 12:46:53,687 INFO L131 PetriNetUnfolder]: For 15002/15002 co-relation queries the response was YES. [2023-08-30 12:46:53,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5229 events. 2908/5229 cut-off events. For 15002/15002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25037 event pairs, 441 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 18365. Up to 2471 conditions per place. [2023-08-30 12:46:53,714 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 183 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2023-08-30 12:46:53,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 230 transitions, 2187 flow [2023-08-30 12:46:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:46:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:46:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2149 transitions. [2023-08-30 12:46:53,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681917211328976 [2023-08-30 12:46:53,721 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2149 transitions. [2023-08-30 12:46:53,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2149 transitions. [2023-08-30 12:46:53,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:53,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2149 transitions. [2023-08-30 12:46:53,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.26666666666668) internal successors, (2149), 15 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:53,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:53,734 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:53,734 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 937 flow. Second operand 15 states and 2149 transitions. [2023-08-30 12:46:53,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 230 transitions, 2187 flow [2023-08-30 12:46:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2127 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 12:46:53,767 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1342 flow [2023-08-30 12:46:53,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-08-30 12:46:53,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-08-30 12:46:53,768 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1342 flow [2023-08-30 12:46:53,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:53,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:53,769 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:53,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 12:46:53,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:53,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash 810645160, now seen corresponding path program 3 times [2023-08-30 12:46:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:53,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648704952] [2023-08-30 12:46:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:46:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648704952] [2023-08-30 12:46:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648704952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818144979] [2023-08-30 12:46:54,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:46:54,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:54,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:54,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:54,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:46:54,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 12:46:54,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:54,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 12:46:54,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:54,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:54,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818144979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:54,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:54,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-08-30 12:46:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447847769] [2023-08-30 12:46:54,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 12:46:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 12:46:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-08-30 12:46:54,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:46:54,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:54,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:54,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:46:54,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:55,806 INFO L130 PetriNetUnfolder]: 3558/6375 cut-off events. [2023-08-30 12:46:55,806 INFO L131 PetriNetUnfolder]: For 24520/24520 co-relation queries the response was YES. [2023-08-30 12:46:55,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 6375 events. 3558/6375 cut-off events. For 24520/24520 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32125 event pairs, 485 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 23859. Up to 1321 conditions per place. [2023-08-30 12:46:55,839 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 269 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2023-08-30 12:46:55,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 361 transitions, 3446 flow [2023-08-30 12:46:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 12:46:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 12:46:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3586 transitions. [2023-08-30 12:46:55,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875816993464053 [2023-08-30 12:46:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3586 transitions. [2023-08-30 12:46:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3586 transitions. [2023-08-30 12:46:55,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:55,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3586 transitions. [2023-08-30 12:46:55,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.44) internal successors, (3586), 25 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:55,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:55,863 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:55,863 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1342 flow. Second operand 25 states and 3586 transitions. [2023-08-30 12:46:55,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 361 transitions, 3446 flow [2023-08-30 12:46:55,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 361 transitions, 3362 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 12:46:55,926 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1991 flow [2023-08-30 12:46:55,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1991, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-08-30 12:46:55,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 12:46:55,927 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1991 flow [2023-08-30 12:46:55,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:55,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:55,928 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 12:46:55,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 12:46:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:46:56,139 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:56,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1147695864, now seen corresponding path program 2 times [2023-08-30 12:46:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400554175] [2023-08-30 12:46:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400554175] [2023-08-30 12:46:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400554175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302732283] [2023-08-30 12:46:56,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:46:56,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:56,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:56,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:46:56,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:46:56,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:56,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:46:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:56,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302732283] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:57,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:57,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 12:46:57,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554051832] [2023-08-30 12:46:57,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:57,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 12:46:57,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 12:46:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 12:46:57,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 12:46:57,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1991 flow. Second operand has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:57,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:57,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 12:46:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:59,193 INFO L130 PetriNetUnfolder]: 5858/10531 cut-off events. [2023-08-30 12:46:59,194 INFO L131 PetriNetUnfolder]: For 57270/57270 co-relation queries the response was YES. [2023-08-30 12:46:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 10531 events. 5858/10531 cut-off events. For 57270/57270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51478 event pairs, 939 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 40832. Up to 2778 conditions per place. [2023-08-30 12:46:59,253 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 496 selfloop transitions, 115 changer transitions 0/612 dead transitions. [2023-08-30 12:46:59,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 612 transitions, 6061 flow [2023-08-30 12:46:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 12:46:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 12:46:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5387 transitions. [2023-08-30 12:46:59,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029878618113912 [2023-08-30 12:46:59,260 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5387 transitions. [2023-08-30 12:46:59,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5387 transitions. [2023-08-30 12:46:59,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:59,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5387 transitions. [2023-08-30 12:46:59,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.9142857142857) internal successors, (5387), 35 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:59,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:59,279 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:59,279 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1991 flow. Second operand 35 states and 5387 transitions. [2023-08-30 12:46:59,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 612 transitions, 6061 flow [2023-08-30 12:46:59,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 5944 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-30 12:46:59,405 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 3174 flow [2023-08-30 12:46:59,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3174, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2023-08-30 12:46:59,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 12:46:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 3174 flow [2023-08-30 12:46:59,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:59,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:59,408 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:59,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:59,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:59,617 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:59,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1905252954, now seen corresponding path program 4 times [2023-08-30 12:46:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705348655] [2023-08-30 12:46:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:59,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:47:00,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705348655] [2023-08-30 12:47:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705348655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848271357] [2023-08-30 12:47:00,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:47:00,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:00,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:00,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:47:00,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:47:00,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:00,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:47:00,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:47:00,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:47:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848271357] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:00,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2023-08-30 12:47:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104697853] [2023-08-30 12:47:00,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:00,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 12:47:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 12:47:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-08-30 12:47:00,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:47:00,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 3174 flow. Second operand has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:00,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:00,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:47:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:03,199 INFO L130 PetriNetUnfolder]: 8021/14364 cut-off events. [2023-08-30 12:47:03,200 INFO L131 PetriNetUnfolder]: For 84336/84336 co-relation queries the response was YES. [2023-08-30 12:47:03,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 14364 events. 8021/14364 cut-off events. For 84336/84336 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76194 event pairs, 771 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 56728. Up to 2988 conditions per place. [2023-08-30 12:47:03,283 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 405 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2023-08-30 12:47:03,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 622 transitions, 7379 flow [2023-08-30 12:47:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 12:47:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 12:47:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5565 transitions. [2023-08-30 12:47:03,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663147310206134 [2023-08-30 12:47:03,290 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5565 transitions. [2023-08-30 12:47:03,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5565 transitions. [2023-08-30 12:47:03,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:03,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5565 transitions. [2023-08-30 12:47:03,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.69230769230768) internal successors, (5565), 39 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:03,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:03,309 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:03,309 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 3174 flow. Second operand 39 states and 5565 transitions. [2023-08-30 12:47:03,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 622 transitions, 7379 flow [2023-08-30 12:47:03,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 622 transitions, 6960 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-08-30 12:47:03,513 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 4970 flow [2023-08-30 12:47:03,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4970, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-08-30 12:47:03,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2023-08-30 12:47:03,514 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 4970 flow [2023-08-30 12:47:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:03,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:03,515 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:03,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:03,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:03,721 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:03,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2029433002, now seen corresponding path program 1 times [2023-08-30 12:47:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97353727] [2023-08-30 12:47:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:04,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97353727] [2023-08-30 12:47:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97353727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162070038] [2023-08-30 12:47:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:04,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:04,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:04,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:47:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:04,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 12:47:04,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:04,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162070038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:04,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:04,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-08-30 12:47:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865193966] [2023-08-30 12:47:04,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:04,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 12:47:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 12:47:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-08-30 12:47:05,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:47:05,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 4970 flow. Second operand has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:05,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:05,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:47:05,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:09,245 INFO L130 PetriNetUnfolder]: 11730/21007 cut-off events. [2023-08-30 12:47:09,246 INFO L131 PetriNetUnfolder]: For 139704/139704 co-relation queries the response was YES. [2023-08-30 12:47:09,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 21007 events. 11730/21007 cut-off events. For 139704/139704 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 124637 event pairs, 1301 based on Foata normal form. 166/21173 useless extension candidates. Maximal degree in co-relation 85090. Up to 4457 conditions per place. [2023-08-30 12:47:09,401 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 387 selfloop transitions, 384 changer transitions 0/772 dead transitions. [2023-08-30 12:47:09,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 772 transitions, 11415 flow [2023-08-30 12:47:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 12:47:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 12:47:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4723 transitions. [2023-08-30 12:47:09,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771637948108535 [2023-08-30 12:47:09,406 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4723 transitions. [2023-08-30 12:47:09,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4723 transitions. [2023-08-30 12:47:09,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:09,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4723 transitions. [2023-08-30 12:47:09,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 143.12121212121212) internal successors, (4723), 33 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:09,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:09,420 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 4970 flow. Second operand 33 states and 4723 transitions. [2023-08-30 12:47:09,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 772 transitions, 11415 flow [2023-08-30 12:47:09,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 772 transitions, 10697 flow, removed 273 selfloop flow, removed 13 redundant places. [2023-08-30 12:47:09,981 INFO L231 Difference]: Finished difference. Result has 237 places, 488 transitions, 9122 flow [2023-08-30 12:47:09,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9122, PETRI_PLACES=237, PETRI_TRANSITIONS=488} [2023-08-30 12:47:09,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2023-08-30 12:47:09,981 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 488 transitions, 9122 flow [2023-08-30 12:47:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:09,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:09,982 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:09,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:10,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:10,183 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:10,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash 792853539, now seen corresponding path program 5 times [2023-08-30 12:47:10,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:10,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938979054] [2023-08-30 12:47:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:10,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:47:10,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938979054] [2023-08-30 12:47:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938979054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:10,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481706176] [2023-08-30 12:47:10,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:47:10,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:10,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:10,865 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:10,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:47:11,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-30 12:47:11,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:11,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 12:47:11,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:47:11,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:47:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481706176] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:11,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:11,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 39 [2023-08-30 12:47:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801339761] [2023-08-30 12:47:11,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:11,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 12:47:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 12:47:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 12:47:11,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:47:11,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 488 transitions, 9122 flow. Second operand has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:11,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:11,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:47:11,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:18,415 INFO L130 PetriNetUnfolder]: 15387/27478 cut-off events. [2023-08-30 12:47:18,416 INFO L131 PetriNetUnfolder]: For 211558/211558 co-relation queries the response was YES. [2023-08-30 12:47:18,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116852 conditions, 27478 events. 15387/27478 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 169509 event pairs, 2195 based on Foata normal form. 160/27638 useless extension candidates. Maximal degree in co-relation 115019. Up to 5830 conditions per place. [2023-08-30 12:47:18,664 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 669 selfloop transitions, 469 changer transitions 0/1139 dead transitions. [2023-08-30 12:47:18,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1139 transitions, 16944 flow [2023-08-30 12:47:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 12:47:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 12:47:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7184 transitions. [2023-08-30 12:47:18,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46954248366013074 [2023-08-30 12:47:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7184 transitions. [2023-08-30 12:47:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7184 transitions. [2023-08-30 12:47:18,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:18,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7184 transitions. [2023-08-30 12:47:18,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 143.68) internal successors, (7184), 50 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:18,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:18,693 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:18,694 INFO L175 Difference]: Start difference. First operand has 237 places, 488 transitions, 9122 flow. Second operand 50 states and 7184 transitions. [2023-08-30 12:47:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1139 transitions, 16944 flow [2023-08-30 12:47:19,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1139 transitions, 16381 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-08-30 12:47:19,585 INFO L231 Difference]: Finished difference. Result has 298 places, 628 transitions, 13384 flow [2023-08-30 12:47:19,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=13384, PETRI_PLACES=298, PETRI_TRANSITIONS=628} [2023-08-30 12:47:19,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-30 12:47:19,586 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 628 transitions, 13384 flow [2023-08-30 12:47:19,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:19,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:19,587 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:19,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 12:47:19,792 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:19,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1862134967, now seen corresponding path program 2 times [2023-08-30 12:47:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964224324] [2023-08-30 12:47:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964224324] [2023-08-30 12:47:20,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964224324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738235839] [2023-08-30 12:47:20,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:47:20,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:20,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:47:20,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:47:20,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:20,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:47:20,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:20,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:21,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738235839] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:21,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2023-08-30 12:47:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756131451] [2023-08-30 12:47:21,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 12:47:21,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 12:47:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 12:47:21,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:47:21,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 628 transitions, 13384 flow. Second operand has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:21,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:21,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:47:21,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:31,612 INFO L130 PetriNetUnfolder]: 19671/35170 cut-off events. [2023-08-30 12:47:31,612 INFO L131 PetriNetUnfolder]: For 319324/319324 co-relation queries the response was YES. [2023-08-30 12:47:32,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154708 conditions, 35170 events. 19671/35170 cut-off events. For 319324/319324 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 228920 event pairs, 2231 based on Foata normal form. 234/35404 useless extension candidates. Maximal degree in co-relation 152762. Up to 7561 conditions per place. [2023-08-30 12:47:32,125 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 512 selfloop transitions, 778 changer transitions 0/1291 dead transitions. [2023-08-30 12:47:32,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1291 transitions, 22541 flow [2023-08-30 12:47:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 12:47:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 12:47:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7149 transitions. [2023-08-30 12:47:32,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46725490196078434 [2023-08-30 12:47:32,131 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7149 transitions. [2023-08-30 12:47:32,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7149 transitions. [2023-08-30 12:47:32,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:32,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7149 transitions. [2023-08-30 12:47:32,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 142.98) internal successors, (7149), 50 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:32,154 INFO L175 Difference]: Start difference. First operand has 298 places, 628 transitions, 13384 flow. Second operand 50 states and 7149 transitions. [2023-08-30 12:47:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1291 transitions, 22541 flow [2023-08-30 12:47:33,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1291 transitions, 21593 flow, removed 353 selfloop flow, removed 17 redundant places. [2023-08-30 12:47:33,720 INFO L231 Difference]: Finished difference. Result has 342 places, 846 transitions, 19346 flow [2023-08-30 12:47:33,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19346, PETRI_PLACES=342, PETRI_TRANSITIONS=846} [2023-08-30 12:47:33,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2023-08-30 12:47:33,721 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 846 transitions, 19346 flow [2023-08-30 12:47:33,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:33,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:33,722 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:33,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:33,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 12:47:33,927 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:33,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1131368074, now seen corresponding path program 3 times [2023-08-30 12:47:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:33,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819051271] [2023-08-30 12:47:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 12:47:34,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:34,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819051271] [2023-08-30 12:47:34,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819051271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:34,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218247392] [2023-08-30 12:47:34,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:47:34,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:34,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:34,805 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:34,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 12:47:35,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 12:47:35,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:35,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:47:35,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:47:35,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:47:35,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218247392] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:35,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:35,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2023-08-30 12:47:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544709626] [2023-08-30 12:47:35,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:35,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 12:47:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 12:47:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 12:47:35,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:47:35,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 846 transitions, 19346 flow. Second operand has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:35,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:35,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:47:35,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:55,408 INFO L130 PetriNetUnfolder]: 33608/60213 cut-off events. [2023-08-30 12:47:55,408 INFO L131 PetriNetUnfolder]: For 533538/533538 co-relation queries the response was YES. [2023-08-30 12:47:56,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275460 conditions, 60213 events. 33608/60213 cut-off events. For 533538/533538 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 421723 event pairs, 4963 based on Foata normal form. 132/60345 useless extension candidates. Maximal degree in co-relation 273438. Up to 13087 conditions per place. [2023-08-30 12:47:56,752 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 670 selfloop transitions, 1366 changer transitions 0/2037 dead transitions. [2023-08-30 12:47:56,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2037 transitions, 44227 flow [2023-08-30 12:47:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 12:47:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 12:47:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5852 transitions. [2023-08-30 12:47:56,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664434879642914 [2023-08-30 12:47:56,759 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5852 transitions. [2023-08-30 12:47:56,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5852 transitions. [2023-08-30 12:47:56,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:56,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5852 transitions. [2023-08-30 12:47:56,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 142.73170731707316) internal successors, (5852), 41 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:56,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:56,781 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:56,781 INFO L175 Difference]: Start difference. First operand has 342 places, 846 transitions, 19346 flow. Second operand 41 states and 5852 transitions. [2023-08-30 12:47:56,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2037 transitions, 44227 flow [2023-08-30 12:48:00,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2037 transitions, 41632 flow, removed 992 selfloop flow, removed 14 redundant places. [2023-08-30 12:48:00,727 INFO L231 Difference]: Finished difference. Result has 381 places, 1646 transitions, 39905 flow [2023-08-30 12:48:00,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=18358, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39905, PETRI_PLACES=381, PETRI_TRANSITIONS=1646} [2023-08-30 12:48:00,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2023-08-30 12:48:00,729 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1646 transitions, 39905 flow [2023-08-30 12:48:00,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:00,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:00,730 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:00,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 12:48:00,938 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:00,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:00,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1735374202, now seen corresponding path program 4 times [2023-08-30 12:48:00,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:00,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796014637] [2023-08-30 12:48:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:48:01,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796014637] [2023-08-30 12:48:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796014637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55323615] [2023-08-30 12:48:01,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:48:01,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:01,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:01,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:01,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 12:48:03,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:48:03,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:03,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 12:48:03,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:48:03,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:48:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55323615] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:03,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 12:48:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116681043] [2023-08-30 12:48:03,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:03,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 12:48:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 12:48:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 12:48:03,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:48:03,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1646 transitions, 39905 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:03,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:03,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:48:03,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:52,020 INFO L130 PetriNetUnfolder]: 55915/100262 cut-off events. [2023-08-30 12:48:52,020 INFO L131 PetriNetUnfolder]: For 1060206/1060206 co-relation queries the response was YES. [2023-08-30 12:48:54,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466443 conditions, 100262 events. 55915/100262 cut-off events. For 1060206/1060206 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 766781 event pairs, 9247 based on Foata normal form. 430/100692 useless extension candidates. Maximal degree in co-relation 464079. Up to 21918 conditions per place. [2023-08-30 12:48:54,518 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1163 selfloop transitions, 2344 changer transitions 0/3508 dead transitions. [2023-08-30 12:48:54,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3508 transitions, 79914 flow [2023-08-30 12:48:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 12:48:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 12:48:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9172 transitions. [2023-08-30 12:48:54,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834150326797386 [2023-08-30 12:48:54,527 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9172 transitions. [2023-08-30 12:48:54,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9172 transitions. [2023-08-30 12:48:54,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:54,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9172 transitions. [2023-08-30 12:48:54,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 143.3125) internal successors, (9172), 64 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,555 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:54,555 INFO L175 Difference]: Start difference. First operand has 381 places, 1646 transitions, 39905 flow. Second operand 64 states and 9172 transitions. [2023-08-30 12:48:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3508 transitions, 79914 flow [2023-08-30 12:49:06,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 3508 transitions, 77199 flow, removed 1269 selfloop flow, removed 11 redundant places. [2023-08-30 12:49:06,227 INFO L231 Difference]: Finished difference. Result has 460 places, 2817 transitions, 74685 flow [2023-08-30 12:49:06,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=37897, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=74685, PETRI_PLACES=460, PETRI_TRANSITIONS=2817} [2023-08-30 12:49:06,229 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2023-08-30 12:49:06,229 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 2817 transitions, 74685 flow [2023-08-30 12:49:06,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:06,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:49:06,230 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:49:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 12:49:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 12:49:06,431 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:49:06,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:49:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash 979517914, now seen corresponding path program 5 times [2023-08-30 12:49:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:49:06,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885274747] [2023-08-30 12:49:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:49:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:49:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:49:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:49:07,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:49:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885274747] [2023-08-30 12:49:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885274747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:49:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542999803] [2023-08-30 12:49:07,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:49:07,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:49:07,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:49:07,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:49:07,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 12:49:07,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 12:49:07,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:49:07,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 12:49:07,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:49:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:49:08,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:49:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:49:08,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542999803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:49:08,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:49:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 12:49:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753799180] [2023-08-30 12:49:08,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:49:08,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 12:49:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:49:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 12:49:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 12:49:08,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:49:08,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2817 transitions, 74685 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:49:08,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:49:08,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:49:08,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:51:07,801 INFO L130 PetriNetUnfolder]: 83695/149958 cut-off events. [2023-08-30 12:51:07,801 INFO L131 PetriNetUnfolder]: For 1772680/1772680 co-relation queries the response was YES. [2023-08-30 12:51:12,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728256 conditions, 149958 events. 83695/149958 cut-off events. For 1772680/1772680 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 1229066 event pairs, 10707 based on Foata normal form. 428/150386 useless extension candidates. Maximal degree in co-relation 725732. Up to 32876 conditions per place. [2023-08-30 12:51:12,613 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1370 selfloop transitions, 3645 changer transitions 0/5016 dead transitions. [2023-08-30 12:51:12,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 5016 transitions, 128780 flow [2023-08-30 12:51:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 12:51:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 12:51:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9981 transitions. [2023-08-30 12:51:12,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596638655462186 [2023-08-30 12:51:12,623 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9981 transitions. [2023-08-30 12:51:12,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9981 transitions. [2023-08-30 12:51:12,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:51:12,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9981 transitions. [2023-08-30 12:51:12,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.5857142857143) internal successors, (9981), 70 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:12,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:12,655 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:12,655 INFO L175 Difference]: Start difference. First operand has 460 places, 2817 transitions, 74685 flow. Second operand 70 states and 9981 transitions. [2023-08-30 12:51:12,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 5016 transitions, 128780 flow [2023-08-30 12:51:45,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 5016 transitions, 123649 flow, removed 2059 selfloop flow, removed 9 redundant places. [2023-08-30 12:51:46,030 INFO L231 Difference]: Finished difference. Result has 552 places, 4363 transitions, 123808 flow [2023-08-30 12:51:46,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71046, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=123808, PETRI_PLACES=552, PETRI_TRANSITIONS=4363} [2023-08-30 12:51:46,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2023-08-30 12:51:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 4363 transitions, 123808 flow [2023-08-30 12:51:46,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:46,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:51:46,035 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:51:46,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 12:51:46,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:51:46,244 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:51:46,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:51:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2019786691, now seen corresponding path program 6 times [2023-08-30 12:51:46,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:51:46,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451646303] [2023-08-30 12:51:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:51:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:51:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:51:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 1 proven. 690 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 12:51:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:51:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451646303] [2023-08-30 12:51:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451646303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:51:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435146657] [2023-08-30 12:51:47,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 12:51:47,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:51:47,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:51:47,473 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:51:47,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 12:51:52,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-08-30 12:51:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:51:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 12:51:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:51:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:51:52,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:51:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:51:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435146657] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:51:53,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:51:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 53 [2023-08-30 12:51:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657896370] [2023-08-30 12:51:53,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:51:53,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-30 12:51:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:51:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-30 12:51:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2023-08-30 12:51:53,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 12:51:53,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 4363 transitions, 123808 flow. Second operand has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:53,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:51:53,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 12:51:53,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand