./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 13:40:33,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 13:40:33,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 13:40:33,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 13:40:33,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 13:40:33,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 13:40:33,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 13:40:33,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 13:40:33,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 13:40:33,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 13:40:33,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 13:40:33,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 13:40:33,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 13:40:33,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 13:40:33,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 13:40:33,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 13:40:33,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 13:40:33,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 13:40:33,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 13:40:33,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 13:40:33,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 13:40:33,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 13:40:33,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 13:40:33,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 13:40:33,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 13:40:33,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 13:40:33,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 13:40:33,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 13:40:33,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 13:40:33,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 13:40:33,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 13:40:33,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 13:40:33,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 13:40:33,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 13:40:33,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 13:40:33,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 13:40:33,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 13:40:33,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 13:40:33,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 13:40:33,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 13:40:33,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 13:40:33,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 13:40:33,183 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 13:40:33,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 13:40:33,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 13:40:33,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 13:40:33,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 13:40:33,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 13:40:33,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 13:40:33,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 13:40:33,186 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 13:40:33,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 13:40:33,187 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 13:40:33,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 13:40:33,188 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 13:40:33,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 13:40:33,189 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 13:40:33,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 13:40:33,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 13:40:33,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 13:40:33,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 13:40:33,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:40:33,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 13:40:33,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 13:40:33,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 13:40:33,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 13:40:33,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 13:40:33,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 13:40:33,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 13:40:33,191 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 13:40:33,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 13:40:33,192 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 13:40:33,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 13:40:33,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 13:40:33,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 13:40:33,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 13:40:33,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 13:40:33,545 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 13:40:33,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-09-01 13:40:34,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 13:40:34,907 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 13:40:34,908 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-09-01 13:40:34,915 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25177b400/093490b039f04280a562ae322581a58b/FLAG00620231d [2023-09-01 13:40:34,929 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25177b400/093490b039f04280a562ae322581a58b [2023-09-01 13:40:34,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 13:40:34,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 13:40:34,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 13:40:34,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 13:40:34,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 13:40:34,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:40:34" (1/1) ... [2023-09-01 13:40:34,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399920ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:34, skipping insertion in model container [2023-09-01 13:40:34,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:40:34" (1/1) ... [2023-09-01 13:40:34,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 13:40:34,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 13:40:35,137 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-09-01 13:40:35,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:40:35,167 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 13:40:35,201 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-09-01 13:40:35,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:40:35,220 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:40:35,221 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:40:35,227 INFO L208 MainTranslator]: Completed translation [2023-09-01 13:40:35,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35 WrapperNode [2023-09-01 13:40:35,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 13:40:35,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 13:40:35,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 13:40:35,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 13:40:35,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,298 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 275 [2023-09-01 13:40:35,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 13:40:35,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 13:40:35,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 13:40:35,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 13:40:35,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 13:40:35,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 13:40:35,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 13:40:35,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 13:40:35,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (1/1) ... [2023-09-01 13:40:35,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:40:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:40:35,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 13:40:35,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 13:40:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 13:40:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 13:40:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 13:40:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 13:40:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 13:40:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 13:40:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 13:40:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 13:40:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 13:40:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 13:40:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 13:40:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 13:40:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 13:40:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 13:40:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 13:40:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 13:40:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 13:40:35,449 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 13:40:35,597 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 13:40:35,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 13:40:36,057 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 13:40:36,333 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 13:40:36,333 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 13:40:36,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:40:36 BoogieIcfgContainer [2023-09-01 13:40:36,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 13:40:36,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 13:40:36,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 13:40:36,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 13:40:36,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:40:34" (1/3) ... [2023-09-01 13:40:36,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e037dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:40:36, skipping insertion in model container [2023-09-01 13:40:36,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:40:35" (2/3) ... [2023-09-01 13:40:36,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e037dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:40:36, skipping insertion in model container [2023-09-01 13:40:36,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:40:36" (3/3) ... [2023-09-01 13:40:36,342 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-09-01 13:40:36,349 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 13:40:36,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 13:40:36,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 13:40:36,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 13:40:36,432 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 13:40:36,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 384 flow [2023-09-01 13:40:36,544 INFO L130 PetriNetUnfolder]: 16/177 cut-off events. [2023-09-01 13:40:36,544 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:40:36,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 16/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-09-01 13:40:36,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 384 flow [2023-09-01 13:40:36,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 352 flow [2023-09-01 13:40:36,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 13:40:36,574 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 352 flow [2023-09-01 13:40:36,576 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 352 flow [2023-09-01 13:40:36,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 352 flow [2023-09-01 13:40:36,625 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-09-01 13:40:36,626 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:40:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 16/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-09-01 13:40:36,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-09-01 13:40:42,528 INFO L134 LiptonReduction]: Checked pairs total: 1529 [2023-09-01 13:40:42,528 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-09-01 13:40:42,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 13:40:42,545 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;@7d16c288, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 13:40:42,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 13:40:42,551 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-09-01 13:40:42,551 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:40:42,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:40:42,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:40:42,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:40:42,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:40:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash -118065051, now seen corresponding path program 1 times [2023-09-01 13:40:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:40:42,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778218189] [2023-09-01 13:40:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:40:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:40:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:40:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778218189] [2023-09-01 13:40:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778218189] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:40:43,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:40:43,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:40:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784277646] [2023-09-01 13:40:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:40:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:40:43,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:40:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:40:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:40:43,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-09-01 13:40:43,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:40:43,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-09-01 13:40:43,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:40:43,319 INFO L130 PetriNetUnfolder]: 343/476 cut-off events. [2023-09-01 13:40:43,319 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 13:40:43,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 476 events. 343/476 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1477 event pairs, 133 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-09-01 13:40:43,324 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-09-01 13:40:43,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 164 flow [2023-09-01 13:40:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 13:40:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 13:40:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-09-01 13:40:43,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45538243626062325 [2023-09-01 13:40:43,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-09-01 13:40:43,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-09-01 13:40:43,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:40:43,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-09-01 13:40:43,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,365 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 4 states and 643 transitions. [2023-09-01 13:40:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 164 flow [2023-09-01 13:40:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 13:40:43,382 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 72 flow [2023-09-01 13:40:43,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-09-01 13:40:43,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-09-01 13:40:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 72 flow [2023-09-01 13:40:43,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:40:43,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:40:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 13:40:43,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:40:43,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:40:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash -628194304, now seen corresponding path program 1 times [2023-09-01 13:40:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:40:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821126165] [2023-09-01 13:40:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:40:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:40:43,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:40:43,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821126165] [2023-09-01 13:40:43,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821126165] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:40:43,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:40:43,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 13:40:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065294261] [2023-09-01 13:40:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:40:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 13:40:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:40:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 13:40:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 13:40:43,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-09-01 13:40:43,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:40:43,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-09-01 13:40:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:40:43,964 INFO L130 PetriNetUnfolder]: 344/481 cut-off events. [2023-09-01 13:40:43,964 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 13:40:43,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 481 events. 344/481 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1492 event pairs, 133 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 323. Up to 373 conditions per place. [2023-09-01 13:40:43,968 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 31 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-09-01 13:40:43,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 180 flow [2023-09-01 13:40:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:40:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:40:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-09-01 13:40:43,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42445703493862136 [2023-09-01 13:40:43,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-09-01 13:40:43,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-09-01 13:40:43,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:40:43,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-09-01 13:40:43,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,979 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 72 flow. Second operand 6 states and 899 transitions. [2023-09-01 13:40:43,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 180 flow [2023-09-01 13:40:43,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 13:40:43,981 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 96 flow [2023-09-01 13:40:43,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-09-01 13:40:43,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-09-01 13:40:43,982 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 96 flow [2023-09-01 13:40:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:43,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:40:43,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:40:43,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 13:40:43,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:40:43,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:40:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1446722701, now seen corresponding path program 1 times [2023-09-01 13:40:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:40:43,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583514693] [2023-09-01 13:40:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:40:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:40:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:40:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583514693] [2023-09-01 13:40:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583514693] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:40:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959625413] [2023-09-01 13:40:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:44,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:40:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:40:44,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:40:44,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 13:40:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:44,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:40:44,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:40:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:40:44,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:40:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:40:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959625413] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 13:40:44,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 13:40:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-09-01 13:40:44,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136262309] [2023-09-01 13:40:44,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:40:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:40:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:40:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:40:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:40:44,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-09-01 13:40:44,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:44,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:40:44,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-09-01 13:40:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:40:44,513 INFO L130 PetriNetUnfolder]: 312/453 cut-off events. [2023-09-01 13:40:44,513 INFO L131 PetriNetUnfolder]: For 114/150 co-relation queries the response was YES. [2023-09-01 13:40:44,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 453 events. 312/453 cut-off events. For 114/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 134 based on Foata normal form. 36/382 useless extension candidates. Maximal degree in co-relation 1003. Up to 352 conditions per place. [2023-09-01 13:40:44,517 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-09-01 13:40:44,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-09-01 13:40:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:40:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:40:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-09-01 13:40:44,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198300283286119 [2023-09-01 13:40:44,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-09-01 13:40:44,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-09-01 13:40:44,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:40:44,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-09-01 13:40:44,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:44,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:44,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:44,526 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 96 flow. Second operand 5 states and 741 transitions. [2023-09-01 13:40:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-09-01 13:40:44,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 13:40:44,529 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 106 flow [2023-09-01 13:40:44,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-09-01 13:40:44,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-09-01 13:40:44,530 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 106 flow [2023-09-01 13:40:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:40:44,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:40:44,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:40:44,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 13:40:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:40:44,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:40:44,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:40:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash 768134593, now seen corresponding path program 1 times [2023-09-01 13:40:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:40:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863539609] [2023-09-01 13:40:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:40:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:40:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:40:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863539609] [2023-09-01 13:40:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863539609] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:40:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866626437] [2023-09-01 13:40:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:40:46,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:40:46,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:40:46,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:40:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 13:40:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:40:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2023-09-01 13:40:46,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:40:47,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 13:40:47,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:40:47,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:40:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:40:47,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:40:47,482 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 13:40:47,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-09-01 13:40:47,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:47,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 81 [2023-09-01 13:40:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:40:47,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:40:48,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:48,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2023-09-01 13:40:48,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:48,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9568246 treesize of output 8519738 [2023-09-01 13:40:49,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:49,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2070 treesize of output 1966 [2023-09-01 13:40:49,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:49,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1910 treesize of output 1646 [2023-09-01 13:40:49,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:40:49,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1590 treesize of output 1214 [2023-09-01 13:42:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866626437] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:00,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-09-01 13:42:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200877764] [2023-09-01 13:42:00,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 13:42:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 13:42:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1454, Unknown=21, NotChecked=0, Total=1640 [2023-09-01 13:42:02,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-09-01 13:42:02,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 106 flow. Second operand has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:02,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:02,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-09-01 13:42:02,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:06,599 INFO L130 PetriNetUnfolder]: 1358/2022 cut-off events. [2023-09-01 13:42:06,599 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2023-09-01 13:42:06,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2022 events. 1358/2022 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8523 event pairs, 124 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 3147. Up to 853 conditions per place. [2023-09-01 13:42:06,610 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 195 selfloop transitions, 89 changer transitions 4/288 dead transitions. [2023-09-01 13:42:06,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 288 transitions, 1407 flow [2023-09-01 13:42:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-09-01 13:42:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-09-01 13:42:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3156 transitions. [2023-09-01 13:42:06,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25544314042897615 [2023-09-01 13:42:06,622 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3156 transitions. [2023-09-01 13:42:06,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3156 transitions. [2023-09-01 13:42:06,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:06,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3156 transitions. [2023-09-01 13:42:06,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 90.17142857142858) internal successors, (3156), 35 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:06,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:06,649 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:06,649 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 106 flow. Second operand 35 states and 3156 transitions. [2023-09-01 13:42:06,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 288 transitions, 1407 flow [2023-09-01 13:42:06,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 288 transitions, 1383 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-09-01 13:42:06,658 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 618 flow [2023-09-01 13:42:06,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2023-09-01 13:42:06,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-09-01 13:42:06,659 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 618 flow [2023-09-01 13:42:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:06,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:06,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:06,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:06,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 13:42:06,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:06,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash -644630665, now seen corresponding path program 2 times [2023-09-01 13:42:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321408927] [2023-09-01 13:42:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321408927] [2023-09-01 13:42:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321408927] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662960655] [2023-09-01 13:42:08,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:42:08,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:08,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:08,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 13:42:08,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:42:08,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:08,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-09-01 13:42:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:08,558 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-09-01 13:42:08,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-09-01 13:42:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:08,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:08,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:08,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662960655] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:09,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-09-01 13:42:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566657965] [2023-09-01 13:42:09,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:09,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 13:42:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 13:42:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 13:42:11,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-09-01 13:42:11,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 618 flow. Second operand has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:11,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:11,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-09-01 13:42:11,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:14,375 INFO L130 PetriNetUnfolder]: 2763/4217 cut-off events. [2023-09-01 13:42:14,375 INFO L131 PetriNetUnfolder]: For 5950/5950 co-relation queries the response was YES. [2023-09-01 13:42:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 4217 events. 2763/4217 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21647 event pairs, 162 based on Foata normal form. 46/4257 useless extension candidates. Maximal degree in co-relation 13956. Up to 1788 conditions per place. [2023-09-01 13:42:14,404 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 238 selfloop transitions, 227 changer transitions 23/488 dead transitions. [2023-09-01 13:42:14,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 488 transitions, 3349 flow [2023-09-01 13:42:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-09-01 13:42:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-09-01 13:42:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5526 transitions. [2023-09-01 13:42:14,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33307214754987646 [2023-09-01 13:42:14,423 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5526 transitions. [2023-09-01 13:42:14,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5526 transitions. [2023-09-01 13:42:14,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:14,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5526 transitions. [2023-09-01 13:42:14,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 117.57446808510639) internal successors, (5526), 47 states have internal predecessors, (5526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:14,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:14,460 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:14,461 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 618 flow. Second operand 47 states and 5526 transitions. [2023-09-01 13:42:14,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 488 transitions, 3349 flow [2023-09-01 13:42:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 488 transitions, 3210 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-09-01 13:42:14,492 INFO L231 Difference]: Finished difference. Result has 138 places, 321 transitions, 2430 flow [2023-09-01 13:42:14,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2430, PETRI_PLACES=138, PETRI_TRANSITIONS=321} [2023-09-01 13:42:14,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2023-09-01 13:42:14,495 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 321 transitions, 2430 flow [2023-09-01 13:42:14,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:14,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:14,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:14,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:14,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:14,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:14,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1317014283, now seen corresponding path program 3 times [2023-09-01 13:42:14,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019737318] [2023-09-01 13:42:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:14,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:15,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:15,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019737318] [2023-09-01 13:42:15,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019737318] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:15,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772745933] [2023-09-01 13:42:15,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:42:15,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:15,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:15,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 13:42:15,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:42:15,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:15,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2023-09-01 13:42:15,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:16,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:16,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-09-01 13:42:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:16,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:16,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:16,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772745933] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:16,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-09-01 13:42:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425983662] [2023-09-01 13:42:16,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:16,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:42:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:42:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-09-01 13:42:18,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-09-01 13:42:18,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 321 transitions, 2430 flow. Second operand has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:18,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:18,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-09-01 13:42:18,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:19,481 INFO L130 PetriNetUnfolder]: 3091/4725 cut-off events. [2023-09-01 13:42:19,481 INFO L131 PetriNetUnfolder]: For 20115/20115 co-relation queries the response was YES. [2023-09-01 13:42:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 4725 events. 3091/4725 cut-off events. For 20115/20115 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24498 event pairs, 512 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 22443. Up to 3936 conditions per place. [2023-09-01 13:42:19,519 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 280 selfloop transitions, 178 changer transitions 1/459 dead transitions. [2023-09-01 13:42:19,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 459 transitions, 4361 flow [2023-09-01 13:42:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 13:42:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 13:42:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1880 transitions. [2023-09-01 13:42:19,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328611898016997 [2023-09-01 13:42:19,524 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1880 transitions. [2023-09-01 13:42:19,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1880 transitions. [2023-09-01 13:42:19,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:19,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1880 transitions. [2023-09-01 13:42:19,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 117.5) internal successors, (1880), 16 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:19,536 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:19,536 INFO L175 Difference]: Start difference. First operand has 138 places, 321 transitions, 2430 flow. Second operand 16 states and 1880 transitions. [2023-09-01 13:42:19,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 459 transitions, 4361 flow [2023-09-01 13:42:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 459 transitions, 4023 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-09-01 13:42:19,631 INFO L231 Difference]: Finished difference. Result has 151 places, 403 transitions, 3362 flow [2023-09-01 13:42:19,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3362, PETRI_PLACES=151, PETRI_TRANSITIONS=403} [2023-09-01 13:42:19,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2023-09-01 13:42:19,633 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 403 transitions, 3362 flow [2023-09-01 13:42:19,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:19,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:19,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:19,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:19,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:19,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:19,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1906045491, now seen corresponding path program 4 times [2023-09-01 13:42:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:19,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173585818] [2023-09-01 13:42:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:21,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173585818] [2023-09-01 13:42:21,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173585818] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314524909] [2023-09-01 13:42:21,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:42:21,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:21,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:21,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 13:42:21,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:42:21,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:21,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-09-01 13:42:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:21,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:21,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-09-01 13:42:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:21,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:21,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:21,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314524909] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:22,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-09-01 13:42:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448382615] [2023-09-01 13:42:22,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:42:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:42:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-09-01 13:42:23,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-09-01 13:42:23,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 403 transitions, 3362 flow. Second operand has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:23,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:23,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-09-01 13:42:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:24,650 INFO L130 PetriNetUnfolder]: 3211/4940 cut-off events. [2023-09-01 13:42:24,650 INFO L131 PetriNetUnfolder]: For 25595/25595 co-relation queries the response was YES. [2023-09-01 13:42:24,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24901 conditions, 4940 events. 3211/4940 cut-off events. For 25595/25595 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26145 event pairs, 523 based on Foata normal form. 1/4933 useless extension candidates. Maximal degree in co-relation 24772. Up to 4245 conditions per place. [2023-09-01 13:42:24,683 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 281 selfloop transitions, 239 changer transitions 6/526 dead transitions. [2023-09-01 13:42:24,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 526 transitions, 5497 flow [2023-09-01 13:42:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 13:42:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 13:42:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1980 transitions. [2023-09-01 13:42:24,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32994500916513914 [2023-09-01 13:42:24,687 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1980 transitions. [2023-09-01 13:42:24,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1980 transitions. [2023-09-01 13:42:24,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:24,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1980 transitions. [2023-09-01 13:42:24,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.47058823529412) internal successors, (1980), 17 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:24,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:24,698 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:24,698 INFO L175 Difference]: Start difference. First operand has 151 places, 403 transitions, 3362 flow. Second operand 17 states and 1980 transitions. [2023-09-01 13:42:24,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 526 transitions, 5497 flow [2023-09-01 13:42:24,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 526 transitions, 5368 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-09-01 13:42:24,821 INFO L231 Difference]: Finished difference. Result has 167 places, 489 transitions, 4810 flow [2023-09-01 13:42:24,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4810, PETRI_PLACES=167, PETRI_TRANSITIONS=489} [2023-09-01 13:42:24,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2023-09-01 13:42:24,823 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 489 transitions, 4810 flow [2023-09-01 13:42:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:24,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:24,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:24,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 13:42:25,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:25,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:25,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1960108977, now seen corresponding path program 5 times [2023-09-01 13:42:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:25,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371537063] [2023-09-01 13:42:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:25,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:26,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371537063] [2023-09-01 13:42:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371537063] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799813021] [2023-09-01 13:42:26,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:42:26,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:26,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:26,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 13:42:26,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:42:26,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:26,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-09-01 13:42:26,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:26,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:42:26,932 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-09-01 13:42:26,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-09-01 13:42:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:26,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:27,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:27,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799813021] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:27,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:27,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-09-01 13:42:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060675723] [2023-09-01 13:42:27,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 13:42:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 13:42:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-09-01 13:42:29,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-09-01 13:42:29,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 489 transitions, 4810 flow. Second operand has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:29,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:29,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-09-01 13:42:29,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:32,879 INFO L130 PetriNetUnfolder]: 4979/7630 cut-off events. [2023-09-01 13:42:32,879 INFO L131 PetriNetUnfolder]: For 46355/46355 co-relation queries the response was YES. [2023-09-01 13:42:32,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40374 conditions, 7630 events. 4979/7630 cut-off events. For 46355/46355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 43784 event pairs, 508 based on Foata normal form. 5/7627 useless extension candidates. Maximal degree in co-relation 40161. Up to 2317 conditions per place. [2023-09-01 13:42:32,928 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 345 selfloop transitions, 531 changer transitions 17/893 dead transitions. [2023-09-01 13:42:32,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 893 transitions, 9731 flow [2023-09-01 13:42:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-09-01 13:42:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-09-01 13:42:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5132 transitions. [2023-09-01 13:42:32,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33809868897819356 [2023-09-01 13:42:32,935 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5132 transitions. [2023-09-01 13:42:32,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5132 transitions. [2023-09-01 13:42:32,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:32,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5132 transitions. [2023-09-01 13:42:32,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 119.34883720930233) internal successors, (5132), 43 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:32,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:32,956 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:32,957 INFO L175 Difference]: Start difference. First operand has 167 places, 489 transitions, 4810 flow. Second operand 43 states and 5132 transitions. [2023-09-01 13:42:32,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 893 transitions, 9731 flow [2023-09-01 13:42:33,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 893 transitions, 9446 flow, removed 111 selfloop flow, removed 5 redundant places. [2023-09-01 13:42:33,177 INFO L231 Difference]: Finished difference. Result has 220 places, 681 transitions, 8172 flow [2023-09-01 13:42:33,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8172, PETRI_PLACES=220, PETRI_TRANSITIONS=681} [2023-09-01 13:42:33,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2023-09-01 13:42:33,178 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 681 transitions, 8172 flow [2023-09-01 13:42:33,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:33,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:33,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:33,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:33,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:33,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:33,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:33,380 INFO L85 PathProgramCache]: Analyzing trace with hash -555652735, now seen corresponding path program 6 times [2023-09-01 13:42:33,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:33,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003171055] [2023-09-01 13:42:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:33,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:34,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003171055] [2023-09-01 13:42:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003171055] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645882491] [2023-09-01 13:42:34,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:42:34,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:34,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:34,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:34,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 13:42:34,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 13:42:34,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:34,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-09-01 13:42:34,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:35,133 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-09-01 13:42:35,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-09-01 13:42:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:35,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:35,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:35,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645882491] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:35,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-09-01 13:42:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602274420] [2023-09-01 13:42:35,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 13:42:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 13:42:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 13:42:37,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-09-01 13:42:37,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 681 transitions, 8172 flow. Second operand has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:37,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:37,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-09-01 13:42:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:41,736 INFO L130 PetriNetUnfolder]: 7403/11343 cut-off events. [2023-09-01 13:42:41,736 INFO L131 PetriNetUnfolder]: For 79052/79052 co-relation queries the response was YES. [2023-09-01 13:42:41,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 11343 events. 7403/11343 cut-off events. For 79052/79052 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 69831 event pairs, 394 based on Foata normal form. 2/11343 useless extension candidates. Maximal degree in co-relation 66177. Up to 4430 conditions per place. [2023-09-01 13:42:41,822 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 516 selfloop transitions, 735 changer transitions 10/1261 dead transitions. [2023-09-01 13:42:41,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1261 transitions, 16505 flow [2023-09-01 13:42:41,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 13:42:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 13:42:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4621 transitions. [2023-09-01 13:42:41,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356577322582988 [2023-09-01 13:42:41,829 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4621 transitions. [2023-09-01 13:42:41,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4621 transitions. [2023-09-01 13:42:41,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:41,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4621 transitions. [2023-09-01 13:42:41,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 118.48717948717949) internal successors, (4621), 39 states have internal predecessors, (4621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:41,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:41,845 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:41,845 INFO L175 Difference]: Start difference. First operand has 220 places, 681 transitions, 8172 flow. Second operand 39 states and 4621 transitions. [2023-09-01 13:42:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1261 transitions, 16505 flow [2023-09-01 13:42:42,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1261 transitions, 15629 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-09-01 13:42:42,703 INFO L231 Difference]: Finished difference. Result has 266 places, 1071 transitions, 14974 flow [2023-09-01 13:42:42,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14974, PETRI_PLACES=266, PETRI_TRANSITIONS=1071} [2023-09-01 13:42:42,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2023-09-01 13:42:42,704 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1071 transitions, 14974 flow [2023-09-01 13:42:42,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:42,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:42,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:42,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:42,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:42,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash 539869495, now seen corresponding path program 7 times [2023-09-01 13:42:42,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:42,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146256472] [2023-09-01 13:42:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:42,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146256472] [2023-09-01 13:42:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146256472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258332906] [2023-09-01 13:42:44,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:42:44,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:44,199 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:42:44,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 13:42:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:44,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2023-09-01 13:42:44,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:44,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:42:44,611 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-09-01 13:42:44,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-09-01 13:42:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:44,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:44,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:42:44,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-09-01 13:42:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:42:45,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258332906] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:42:45,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:42:45,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-09-01 13:42:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782686150] [2023-09-01 13:42:45,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:42:45,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 13:42:45,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:42:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 13:42:45,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-09-01 13:42:46,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-09-01 13:42:46,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1071 transitions, 14974 flow. Second operand has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:46,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:42:46,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-09-01 13:42:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:42:51,362 INFO L130 PetriNetUnfolder]: 7704/11866 cut-off events. [2023-09-01 13:42:51,362 INFO L131 PetriNetUnfolder]: For 127931/127931 co-relation queries the response was YES. [2023-09-01 13:42:51,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 11866 events. 7704/11866 cut-off events. For 127931/127931 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 73630 event pairs, 1190 based on Foata normal form. 2/11866 useless extension candidates. Maximal degree in co-relation 80197. Up to 9995 conditions per place. [2023-09-01 13:42:51,474 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 792 selfloop transitions, 436 changer transitions 3/1231 dead transitions. [2023-09-01 13:42:51,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1231 transitions, 19249 flow [2023-09-01 13:42:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 13:42:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 13:42:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3556 transitions. [2023-09-01 13:42:51,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33578847969782816 [2023-09-01 13:42:51,479 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3556 transitions. [2023-09-01 13:42:51,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3556 transitions. [2023-09-01 13:42:51,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:42:51,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3556 transitions. [2023-09-01 13:42:51,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 118.53333333333333) internal successors, (3556), 30 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:51,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:51,493 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:51,493 INFO L175 Difference]: Start difference. First operand has 266 places, 1071 transitions, 14974 flow. Second operand 30 states and 3556 transitions. [2023-09-01 13:42:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1231 transitions, 19249 flow [2023-09-01 13:42:52,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1231 transitions, 18908 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-09-01 13:42:52,596 INFO L231 Difference]: Finished difference. Result has 288 places, 1115 transitions, 16568 flow [2023-09-01 13:42:52,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16568, PETRI_PLACES=288, PETRI_TRANSITIONS=1115} [2023-09-01 13:42:52,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2023-09-01 13:42:52,597 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1115 transitions, 16568 flow [2023-09-01 13:42:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:42:52,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:42:52,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:42:52,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 13:42:52,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 13:42:52,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:42:52,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:42:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -680043111, now seen corresponding path program 8 times [2023-09-01 13:42:52,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:42:52,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467808911] [2023-09-01 13:42:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:42:52,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:42:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:42:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:42:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467808911] [2023-09-01 13:42:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467808911] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:42:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371419204] [2023-09-01 13:42:54,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:42:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:42:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:42:54,279 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) [2023-09-01 13:42:54,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 13:42:54,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:42:54,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:42:54,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 77 conjunts are in the unsatisfiable core [2023-09-01 13:42:54,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:42:54,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 13:42:54,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:42:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:42:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:42:54,849 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 13:42:54,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-09-01 13:42:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:42:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:42:54,918 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 13:42:54,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-09-01 13:42:55,043 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-09-01 13:42:55,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-09-01 13:42:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:42:55,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:42:57,270 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int))) (or (<= c_~N~0 ~M~0) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-09-01 13:42:59,345 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (or (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-09-01 13:43:06,735 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:43:06,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 70 [2023-09-01 13:43:06,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:43:06,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38390 treesize of output 32314 [2023-09-01 13:43:07,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:43:07,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2006 treesize of output 1822 [2023-09-01 13:43:07,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:43:07,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1814 treesize of output 1438 [2023-09-01 13:43:07,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:43:07,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 1262 [2023-09-01 13:43:39,407 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:39,662 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:43:40,730 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:43:40,833 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:40,883 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:41,175 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:41,264 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:43:41,341 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:41,458 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:43:41,517 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:41,562 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:41,632 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:41,696 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:41,739 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:41,830 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:41,943 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:42,762 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:43:42,779 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:43:43,272 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:43,433 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:43,533 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:43,634 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:43,743 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:43,821 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:43,876 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:44,101 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:44,399 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:44,544 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:44,712 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:44,997 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:43:45,829 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:45,960 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:46,273 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:46,416 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:46,580 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:46,885 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:47,032 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:47,087 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:47,260 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:47,349 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:47,519 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:47,636 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:47,929 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:48,253 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:48,435 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:48,561 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:48,907 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:49,025 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:49,104 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:49,367 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:43:49,639 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:49,779 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:50,107 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:50,369 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:50,528 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:43:50,682 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:50,992 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:43:51,248 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:43:51,969 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:43:52,662 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:53,065 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:43:53,447 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:43:55,041 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:43:55,725 WARN L718 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-09-01 13:43:59,375 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:00,898 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:01,567 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:03,279 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:03,586 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:04,277 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:04,534 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:04,666 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:04,939 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:05,206 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:05,871 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:06,005 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:06,054 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:06,176 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:06,236 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:06,379 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:06,512 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:06,625 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:07,062 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:07,716 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:07,984 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:08,287 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:09,832 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:10,506 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:10,779 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:11,430 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:11,719 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:11,768 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:11,895 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:12,270 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:12,359 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:12,463 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:12,722 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:12,826 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:12,995 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:13,079 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:13,097 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:13,240 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:13,453 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:13,473 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:13,535 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:13,593 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:13,714 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:13,852 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:13,965 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:14,145 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:14,293 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:14,669 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:14,785 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:14,898 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:14,929 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:14,958 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:14,985 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:15,058 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,100 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:15,139 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:15,155 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,342 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:15,374 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,429 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:15,491 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:15,664 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:15,722 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,762 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,816 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:15,876 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:15,916 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:16,004 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:16,035 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:16,101 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:16,157 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:16,191 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:16,249 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:16,286 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:16,316 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:16,665 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:17,898 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:17,940 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:18,717 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:19,855 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:19,951 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:19,965 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:19,990 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:20,013 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:20,030 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:20,042 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:20,073 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:20,121 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:20,137 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:20,731 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:28,230 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:28,409 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:29,454 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:29,512 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:30,053 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:30,164 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:30,450 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:30,695 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:30,747 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:30,777 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:30,789 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:30,897 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:31,179 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:31,273 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:31,288 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:31,330 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:31,368 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:31,485 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:31,767 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:32,067 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:32,189 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:32,309 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:32,464 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:32,591 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:32,711 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:32,889 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:32,908 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:32,997 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:33,017 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:33,116 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:33,327 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:33,347 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:33,412 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:33,467 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:33,677 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:33,727 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:33,746 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:33,817 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:33,914 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:33,943 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:34,112 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:34,166 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:34,331 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:34,627 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:34,921 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:34,970 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:35,116 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:35,178 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:35,229 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:35,691 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:35,863 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:36,014 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:36,784 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:38,356 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:39,957 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:41,637 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-09-01 13:44:42,335 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-09-01 13:44:42,416 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:42,723 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:43,023 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:43,406 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:43,456 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:43,732 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:44,052 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:44,150 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:44,360 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:44,737 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:45,167 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:45,245 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:45,302 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:45,327 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:45,716 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:45,740 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:45,808 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:45,818 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:46,066 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:46,158 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:46,193 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:46,267 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:46,632 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:46,752 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:46,867 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:47,325 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:47,338 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:47,943 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:47,977 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:50,145 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:50,166 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:50,251 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:50,531 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:50,543 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:50,556 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:50,900 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:51,354 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:51,373 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:51,391 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:51,737 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:51,770 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:51,803 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:51,953 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-09-01 13:44:51,976 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:52,093 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:52,211 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-09-01 13:44:52,346 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:52,457 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:52,514 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:52,589 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:52,862 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:52,907 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:52,951 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:52,991 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:53,021 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:53,068 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:53,095 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:55,694 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:55,715 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:55,744 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-09-01 13:44:55,892 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:55,980 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:55,998 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:56,195 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:57,660 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:57,680 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:57,713 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:57,841 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:57,893 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:57,931 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-09-01 13:44:57,977 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-09-01 13:44:57,997 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:58,046 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:44:59,714 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:45:00,190 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:45:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 13:45:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371419204] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:45:17,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:45:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 33 [2023-09-01 13:45:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562628787] [2023-09-01 13:45:17,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:45:17,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-09-01 13:45:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:45:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-09-01 13:45:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=923, Unknown=21, NotChecked=126, Total=1190 [2023-09-01 13:45:17,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-09-01 13:45:17,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1115 transitions, 16568 flow. Second operand has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:17,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:45:17,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-09-01 13:45:17,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:45:25,788 INFO L130 PetriNetUnfolder]: 8812/13691 cut-off events. [2023-09-01 13:45:25,789 INFO L131 PetriNetUnfolder]: For 151268/151268 co-relation queries the response was YES. [2023-09-01 13:45:25,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94097 conditions, 13691 events. 8812/13691 cut-off events. For 151268/151268 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89378 event pairs, 671 based on Foata normal form. 8/13697 useless extension candidates. Maximal degree in co-relation 93746. Up to 7849 conditions per place. [2023-09-01 13:45:25,899 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 719 selfloop transitions, 774 changer transitions 11/1504 dead transitions. [2023-09-01 13:45:25,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1504 transitions, 24011 flow [2023-09-01 13:45:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 13:45:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 13:45:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2355 transitions. [2023-09-01 13:45:25,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25659185007626933 [2023-09-01 13:45:25,903 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2355 transitions. [2023-09-01 13:45:25,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2355 transitions. [2023-09-01 13:45:25,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:45:25,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2355 transitions. [2023-09-01 13:45:25,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 90.57692307692308) internal successors, (2355), 26 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:25,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:25,912 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:25,913 INFO L175 Difference]: Start difference. First operand has 288 places, 1115 transitions, 16568 flow. Second operand 26 states and 2355 transitions. [2023-09-01 13:45:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1504 transitions, 24011 flow [2023-09-01 13:45:27,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1504 transitions, 23736 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-09-01 13:45:27,253 INFO L231 Difference]: Finished difference. Result has 309 places, 1263 transitions, 20815 flow [2023-09-01 13:45:27,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16298, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20815, PETRI_PLACES=309, PETRI_TRANSITIONS=1263} [2023-09-01 13:45:27,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-09-01 13:45:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1263 transitions, 20815 flow [2023-09-01 13:45:27,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:27,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:45:27,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:45:27,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 13:45:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:45:27,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:45:27,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:45:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2060531317, now seen corresponding path program 9 times [2023-09-01 13:45:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:45:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58953904] [2023-09-01 13:45:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:45:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:45:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:45:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:45:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:45:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58953904] [2023-09-01 13:45:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58953904] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:45:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227209405] [2023-09-01 13:45:28,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:45:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:45:28,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:45:28,727 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) [2023-09-01 13:45:28,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 13:45:28,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 13:45:28,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:45:28,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2023-09-01 13:45:28,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:45:29,259 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-09-01 13:45:29,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-09-01 13:45:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:29,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:45:29,490 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:45:29,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-09-01 13:45:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227209405] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:45:29,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:45:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-09-01 13:45:29,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501650000] [2023-09-01 13:45:29,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:45:29,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 13:45:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:45:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 13:45:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 13:45:32,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-09-01 13:45:32,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1263 transitions, 20815 flow. Second operand has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:32,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:45:32,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-09-01 13:45:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:45:38,930 INFO L130 PetriNetUnfolder]: 9416/14648 cut-off events. [2023-09-01 13:45:38,931 INFO L131 PetriNetUnfolder]: For 227922/227922 co-relation queries the response was YES. [2023-09-01 13:45:39,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113911 conditions, 14648 events. 9416/14648 cut-off events. For 227922/227922 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 96009 event pairs, 1286 based on Foata normal form. 3/14650 useless extension candidates. Maximal degree in co-relation 113442. Up to 11621 conditions per place. [2023-09-01 13:45:39,083 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 948 selfloop transitions, 580 changer transitions 10/1538 dead transitions. [2023-09-01 13:45:39,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1538 transitions, 27718 flow [2023-09-01 13:45:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-09-01 13:45:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-09-01 13:45:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4382 transitions. [2023-09-01 13:45:39,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33550264145164993 [2023-09-01 13:45:39,090 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4382 transitions. [2023-09-01 13:45:39,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4382 transitions. [2023-09-01 13:45:39,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:45:39,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4382 transitions. [2023-09-01 13:45:39,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 118.43243243243244) internal successors, (4382), 37 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:39,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:39,109 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:39,109 INFO L175 Difference]: Start difference. First operand has 309 places, 1263 transitions, 20815 flow. Second operand 37 states and 4382 transitions. [2023-09-01 13:45:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1538 transitions, 27718 flow [2023-09-01 13:45:41,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1538 transitions, 27016 flow, removed 166 selfloop flow, removed 12 redundant places. [2023-09-01 13:45:41,442 INFO L231 Difference]: Finished difference. Result has 345 places, 1401 transitions, 24282 flow [2023-09-01 13:45:41,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20183, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24282, PETRI_PLACES=345, PETRI_TRANSITIONS=1401} [2023-09-01 13:45:41,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-09-01 13:45:41,444 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1401 transitions, 24282 flow [2023-09-01 13:45:41,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:41,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:45:41,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:45:41,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 13:45:41,650 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,SelfDestructingSolverStorable11 [2023-09-01 13:45:41,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:45:41,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:45:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 952548253, now seen corresponding path program 10 times [2023-09-01 13:45:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:45:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084668355] [2023-09-01 13:45:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:45:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:45:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:45:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:45:42,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:45:42,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084668355] [2023-09-01 13:45:42,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084668355] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:45:42,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729557373] [2023-09-01 13:45:42,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:45:42,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:45:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:45:42,581 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) [2023-09-01 13:45:42,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 13:45:42,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:45:42,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:45:42,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-09-01 13:45:42,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:45:42,997 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:45:42,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-09-01 13:45:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:43,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:45:43,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:45:43,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-09-01 13:45:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729557373] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:45:43,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:45:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-09-01 13:45:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119311372] [2023-09-01 13:45:43,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:45:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 13:45:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:45:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 13:45:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-09-01 13:45:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-09-01 13:45:44,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1401 transitions, 24282 flow. Second operand has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:44,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:45:44,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-09-01 13:45:44,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:45:50,297 INFO L130 PetriNetUnfolder]: 9502/14834 cut-off events. [2023-09-01 13:45:50,297 INFO L131 PetriNetUnfolder]: For 239366/239366 co-relation queries the response was YES. [2023-09-01 13:45:50,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118370 conditions, 14834 events. 9502/14834 cut-off events. For 239366/239366 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97989 event pairs, 1587 based on Foata normal form. 3/14835 useless extension candidates. Maximal degree in co-relation 117913. Up to 13724 conditions per place. [2023-09-01 13:45:50,478 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 1074 selfloop transitions, 398 changer transitions 13/1485 dead transitions. [2023-09-01 13:45:50,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1485 transitions, 28475 flow [2023-09-01 13:45:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 13:45:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 13:45:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2122 transitions. [2023-09-01 13:45:50,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3339628580421782 [2023-09-01 13:45:50,480 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2122 transitions. [2023-09-01 13:45:50,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2122 transitions. [2023-09-01 13:45:50,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:45:50,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2122 transitions. [2023-09-01 13:45:50,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 117.88888888888889) internal successors, (2122), 18 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:50,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:50,488 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:50,488 INFO L175 Difference]: Start difference. First operand has 345 places, 1401 transitions, 24282 flow. Second operand 18 states and 2122 transitions. [2023-09-01 13:45:50,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1485 transitions, 28475 flow [2023-09-01 13:45:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1485 transitions, 27518 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-09-01 13:45:53,116 INFO L231 Difference]: Finished difference. Result has 359 places, 1440 transitions, 25164 flow [2023-09-01 13:45:53,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=23457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25164, PETRI_PLACES=359, PETRI_TRANSITIONS=1440} [2023-09-01 13:45:53,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2023-09-01 13:45:53,118 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1440 transitions, 25164 flow [2023-09-01 13:45:53,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:53,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:45:53,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:45:53,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 13:45:53,319 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,SelfDestructingSolverStorable12 [2023-09-01 13:45:53,320 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:45:53,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:45:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash -70647383, now seen corresponding path program 11 times [2023-09-01 13:45:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:45:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902137396] [2023-09-01 13:45:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:45:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:45:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:45:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:45:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:45:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902137396] [2023-09-01 13:45:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902137396] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:45:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756676601] [2023-09-01 13:45:54,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:45:54,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:45:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:45:54,372 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) [2023-09-01 13:45:54,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 13:45:54,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:45:54,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:45:54,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2023-09-01 13:45:54,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:45:54,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:45:54,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-09-01 13:45:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:54,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:45:54,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:45:54,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-09-01 13:45:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:45:55,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756676601] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:45:55,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:45:55,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-09-01 13:45:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988261621] [2023-09-01 13:45:55,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:45:55,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 13:45:55,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:45:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 13:45:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-09-01 13:45:57,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 353 [2023-09-01 13:45:57,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1440 transitions, 25164 flow. Second operand has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:45:57,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:45:57,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 353 [2023-09-01 13:45:57,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:04,048 INFO L130 PetriNetUnfolder]: 9706/15166 cut-off events. [2023-09-01 13:46:04,048 INFO L131 PetriNetUnfolder]: For 226667/226667 co-relation queries the response was YES. [2023-09-01 13:46:04,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 15166 events. 9706/15166 cut-off events. For 226667/226667 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 100694 event pairs, 1485 based on Foata normal form. 3/15169 useless extension candidates. Maximal degree in co-relation 117948. Up to 11569 conditions per place. [2023-09-01 13:46:04,205 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 886 selfloop transitions, 684 changer transitions 9/1579 dead transitions. [2023-09-01 13:46:04,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1579 transitions, 29964 flow [2023-09-01 13:46:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 13:46:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 13:46:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3613 transitions. [2023-09-01 13:46:04,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411709159584514 [2023-09-01 13:46:04,209 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3613 transitions. [2023-09-01 13:46:04,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3613 transitions. [2023-09-01 13:46:04,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:04,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3613 transitions. [2023-09-01 13:46:04,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 120.43333333333334) internal successors, (3613), 30 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:04,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:04,221 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:04,221 INFO L175 Difference]: Start difference. First operand has 359 places, 1440 transitions, 25164 flow. Second operand 30 states and 3613 transitions. [2023-09-01 13:46:04,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1579 transitions, 29964 flow [2023-09-01 13:46:06,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1579 transitions, 29495 flow, removed 53 selfloop flow, removed 9 redundant places. [2023-09-01 13:46:06,535 INFO L231 Difference]: Finished difference. Result has 384 places, 1475 transitions, 27023 flow [2023-09-01 13:46:06,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=24699, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=27023, PETRI_PLACES=384, PETRI_TRANSITIONS=1475} [2023-09-01 13:46:06,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2023-09-01 13:46:06,537 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1475 transitions, 27023 flow [2023-09-01 13:46:06,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:06,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:06,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:06,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:06,738 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,SelfDestructingSolverStorable13 [2023-09-01 13:46:06,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:06,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash 466247267, now seen corresponding path program 12 times [2023-09-01 13:46:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:06,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027840270] [2023-09-01 13:46:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:06,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027840270] [2023-09-01 13:46:07,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027840270] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894310321] [2023-09-01 13:46:07,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:46:07,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:07,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:07,937 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) [2023-09-01 13:46:07,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 13:46:08,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:46:08,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:46:08,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-09-01 13:46:08,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:08,328 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-09-01 13:46:08,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-09-01 13:46:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:08,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:08,516 INFO L321 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2023-09-01 13:46:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 13:46:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:08,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894310321] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:08,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:08,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-09-01 13:46:08,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348860977] [2023-09-01 13:46:08,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:08,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 13:46:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 13:46:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-09-01 13:46:09,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-09-01 13:46:09,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1475 transitions, 27023 flow. Second operand has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:09,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:09,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-09-01 13:46:09,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:15,398 INFO L130 PetriNetUnfolder]: 9654/15192 cut-off events. [2023-09-01 13:46:15,398 INFO L131 PetriNetUnfolder]: For 246755/247378 co-relation queries the response was YES. [2023-09-01 13:46:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123027 conditions, 15192 events. 9654/15192 cut-off events. For 246755/247378 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 103750 event pairs, 1150 based on Foata normal form. 256/15343 useless extension candidates. Maximal degree in co-relation 122546. Up to 8903 conditions per place. [2023-09-01 13:46:15,742 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 836 selfloop transitions, 832 changer transitions 11/1727 dead transitions. [2023-09-01 13:46:15,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1727 transitions, 34217 flow [2023-09-01 13:46:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 13:46:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 13:46:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2845 transitions. [2023-09-01 13:46:15,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504126123906885 [2023-09-01 13:46:15,748 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2845 transitions. [2023-09-01 13:46:15,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2845 transitions. [2023-09-01 13:46:15,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:15,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2845 transitions. [2023-09-01 13:46:15,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 123.69565217391305) internal successors, (2845), 23 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:15,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:15,759 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:15,760 INFO L175 Difference]: Start difference. First operand has 384 places, 1475 transitions, 27023 flow. Second operand 23 states and 2845 transitions. [2023-09-01 13:46:15,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1727 transitions, 34217 flow [2023-09-01 13:46:18,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1727 transitions, 33332 flow, removed 130 selfloop flow, removed 18 redundant places. [2023-09-01 13:46:18,477 INFO L231 Difference]: Finished difference. Result has 394 places, 1617 transitions, 31101 flow [2023-09-01 13:46:18,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=31101, PETRI_PLACES=394, PETRI_TRANSITIONS=1617} [2023-09-01 13:46:18,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2023-09-01 13:46:18,479 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1617 transitions, 31101 flow [2023-09-01 13:46:18,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:18,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:18,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:18,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:18,685 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,SelfDestructingSolverStorable14 [2023-09-01 13:46:18,685 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:18,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash -7374613, now seen corresponding path program 13 times [2023-09-01 13:46:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082171516] [2023-09-01 13:46:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082171516] [2023-09-01 13:46:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082171516] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534286402] [2023-09-01 13:46:18,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:46:18,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:18,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:18,793 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) [2023-09-01 13:46:18,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 13:46:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:18,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:46:18,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:18,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534286402] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:19,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 13:46:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55832086] [2023-09-01 13:46:19,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 13:46:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 13:46:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-09-01 13:46:19,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-09-01 13:46:19,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1617 transitions, 31101 flow. Second operand has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:19,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:19,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-09-01 13:46:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:26,132 INFO L130 PetriNetUnfolder]: 11190/18524 cut-off events. [2023-09-01 13:46:26,132 INFO L131 PetriNetUnfolder]: For 386085/389081 co-relation queries the response was YES. [2023-09-01 13:46:26,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156674 conditions, 18524 events. 11190/18524 cut-off events. For 386085/389081 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 142503 event pairs, 2052 based on Foata normal form. 2194/20154 useless extension candidates. Maximal degree in co-relation 156536. Up to 6496 conditions per place. [2023-09-01 13:46:26,396 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1674 selfloop transitions, 202 changer transitions 21/1996 dead transitions. [2023-09-01 13:46:26,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1996 transitions, 42013 flow [2023-09-01 13:46:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 13:46:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 13:46:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1812 transitions. [2023-09-01 13:46:26,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42776203966005666 [2023-09-01 13:46:26,399 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1812 transitions. [2023-09-01 13:46:26,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1812 transitions. [2023-09-01 13:46:26,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:26,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1812 transitions. [2023-09-01 13:46:26,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:26,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:26,405 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:26,405 INFO L175 Difference]: Start difference. First operand has 394 places, 1617 transitions, 31101 flow. Second operand 12 states and 1812 transitions. [2023-09-01 13:46:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1996 transitions, 42013 flow [2023-09-01 13:46:30,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1996 transitions, 40945 flow, removed 233 selfloop flow, removed 18 redundant places. [2023-09-01 13:46:30,405 INFO L231 Difference]: Finished difference. Result has 385 places, 1344 transitions, 26255 flow [2023-09-01 13:46:30,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25198, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26255, PETRI_PLACES=385, PETRI_TRANSITIONS=1344} [2023-09-01 13:46:30,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2023-09-01 13:46:30,407 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1344 transitions, 26255 flow [2023-09-01 13:46:30,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:30,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:30,407 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:30,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:30,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:30,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:30,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -556909332, now seen corresponding path program 14 times [2023-09-01 13:46:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54684829] [2023-09-01 13:46:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54684829] [2023-09-01 13:46:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54684829] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398064361] [2023-09-01 13:46:30,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:46:30,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:30,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:30,749 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) [2023-09-01 13:46:30,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 13:46:30,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:46:30,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:46:30,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 13:46:30,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:31,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398064361] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:31,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 13:46:31,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889553606] [2023-09-01 13:46:31,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:31,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 13:46:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 13:46:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-09-01 13:46:31,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-09-01 13:46:31,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1344 transitions, 26255 flow. Second operand has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:31,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:31,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-09-01 13:46:31,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:37,807 INFO L130 PetriNetUnfolder]: 11048/18623 cut-off events. [2023-09-01 13:46:37,807 INFO L131 PetriNetUnfolder]: For 339007/340643 co-relation queries the response was YES. [2023-09-01 13:46:37,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149658 conditions, 18623 events. 11048/18623 cut-off events. For 339007/340643 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 147997 event pairs, 1831 based on Foata normal form. 1287/19715 useless extension candidates. Maximal degree in co-relation 149529. Up to 5357 conditions per place. [2023-09-01 13:46:38,051 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1351 selfloop transitions, 278 changer transitions 255/1970 dead transitions. [2023-09-01 13:46:38,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1970 transitions, 40594 flow [2023-09-01 13:46:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 13:46:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 13:46:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2066 transitions. [2023-09-01 13:46:38,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41804937272359366 [2023-09-01 13:46:38,054 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2066 transitions. [2023-09-01 13:46:38,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2066 transitions. [2023-09-01 13:46:38,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:38,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2066 transitions. [2023-09-01 13:46:38,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.57142857142858) internal successors, (2066), 14 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:38,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:38,059 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:38,059 INFO L175 Difference]: Start difference. First operand has 385 places, 1344 transitions, 26255 flow. Second operand 14 states and 2066 transitions. [2023-09-01 13:46:38,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1970 transitions, 40594 flow [2023-09-01 13:46:41,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1970 transitions, 40474 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-09-01 13:46:41,817 INFO L231 Difference]: Finished difference. Result has 395 places, 1254 transitions, 24755 flow [2023-09-01 13:46:41,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25321, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24755, PETRI_PLACES=395, PETRI_TRANSITIONS=1254} [2023-09-01 13:46:41,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-09-01 13:46:41,819 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1254 transitions, 24755 flow [2023-09-01 13:46:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:41,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:41,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:41,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 13:46:42,020 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:42,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1941623595, now seen corresponding path program 15 times [2023-09-01 13:46:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:42,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729272475] [2023-09-01 13:46:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729272475] [2023-09-01 13:46:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729272475] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:42,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667249626] [2023-09-01 13:46:42,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:46:42,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:42,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:42,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 13:46:42,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:46:42,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:46:42,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:46:42,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:42,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667249626] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:42,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 13:46:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779316709] [2023-09-01 13:46:42,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:42,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 13:46:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 13:46:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-09-01 13:46:42,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-09-01 13:46:42,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1254 transitions, 24755 flow. Second operand has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:42,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:42,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-09-01 13:46:42,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:46,696 INFO L130 PetriNetUnfolder]: 7557/12853 cut-off events. [2023-09-01 13:46:46,696 INFO L131 PetriNetUnfolder]: For 265305/267628 co-relation queries the response was YES. [2023-09-01 13:46:46,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106012 conditions, 12853 events. 7557/12853 cut-off events. For 265305/267628 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 98923 event pairs, 2673 based on Foata normal form. 865/13011 useless extension candidates. Maximal degree in co-relation 105881. Up to 8468 conditions per place. [2023-09-01 13:46:46,943 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 1176 selfloop transitions, 11 changer transitions 11/1327 dead transitions. [2023-09-01 13:46:46,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1327 transitions, 27017 flow [2023-09-01 13:46:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 13:46:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 13:46:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1065 transitions. [2023-09-01 13:46:46,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309995953055443 [2023-09-01 13:46:46,944 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1065 transitions. [2023-09-01 13:46:46,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1065 transitions. [2023-09-01 13:46:46,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:46,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1065 transitions. [2023-09-01 13:46:46,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:46,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:46,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:46,947 INFO L175 Difference]: Start difference. First operand has 395 places, 1254 transitions, 24755 flow. Second operand 7 states and 1065 transitions. [2023-09-01 13:46:46,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1327 transitions, 27017 flow [2023-09-01 13:46:48,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1327 transitions, 26184 flow, removed 200 selfloop flow, removed 21 redundant places. [2023-09-01 13:46:48,548 INFO L231 Difference]: Finished difference. Result has 371 places, 1073 transitions, 19541 flow [2023-09-01 13:46:48,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19654, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19541, PETRI_PLACES=371, PETRI_TRANSITIONS=1073} [2023-09-01 13:46:48,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2023-09-01 13:46:48,549 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1073 transitions, 19541 flow [2023-09-01 13:46:48,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:48,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:48,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:48,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:48,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 13:46:48,750 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:48,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1231118575, now seen corresponding path program 1 times [2023-09-01 13:46:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834557424] [2023-09-01 13:46:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834557424] [2023-09-01 13:46:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834557424] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392943430] [2023-09-01 13:46:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:48,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:48,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:48,861 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:48,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 13:46:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:46:49,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:49,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:49,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392943430] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:49,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:49,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 13:46:49,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456767987] [2023-09-01 13:46:49,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 13:46:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 13:46:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-09-01 13:46:49,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:46:49,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1073 transitions, 19541 flow. Second operand has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:49,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:49,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:46:49,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:55,741 INFO L130 PetriNetUnfolder]: 11072/18974 cut-off events. [2023-09-01 13:46:55,741 INFO L131 PetriNetUnfolder]: For 316575/316681 co-relation queries the response was YES. [2023-09-01 13:46:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145429 conditions, 18974 events. 11072/18974 cut-off events. For 316575/316681 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153344 event pairs, 846 based on Foata normal form. 180/19132 useless extension candidates. Maximal degree in co-relation 145303. Up to 5337 conditions per place. [2023-09-01 13:46:55,934 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1550 selfloop transitions, 455 changer transitions 146/2185 dead transitions. [2023-09-01 13:46:55,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2185 transitions, 41509 flow [2023-09-01 13:46:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 13:46:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 13:46:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4180 transitions. [2023-09-01 13:46:55,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083227508059002 [2023-09-01 13:46:55,938 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4180 transitions. [2023-09-01 13:46:55,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4180 transitions. [2023-09-01 13:46:55,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:55,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4180 transitions. [2023-09-01 13:46:55,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 144.13793103448276) internal successors, (4180), 29 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:55,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:55,950 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:55,950 INFO L175 Difference]: Start difference. First operand has 371 places, 1073 transitions, 19541 flow. Second operand 29 states and 4180 transitions. [2023-09-01 13:46:55,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2185 transitions, 41509 flow [2023-09-01 13:46:58,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 2185 transitions, 41137 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-09-01 13:46:58,607 INFO L231 Difference]: Finished difference. Result has 396 places, 1387 transitions, 26430 flow [2023-09-01 13:46:58,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19173, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26430, PETRI_PLACES=396, PETRI_TRANSITIONS=1387} [2023-09-01 13:46:58,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2023-09-01 13:46:58,608 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1387 transitions, 26430 flow [2023-09-01 13:46:58,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:58,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:58,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:58,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:58,809 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:46:58,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -16239823, now seen corresponding path program 2 times [2023-09-01 13:46:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159211071] [2023-09-01 13:46:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159211071] [2023-09-01 13:46:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159211071] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305118819] [2023-09-01 13:46:58,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:46:58,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:58,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:58,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 13:46:59,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:46:59,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:46:59,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:46:59,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:59,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:59,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305118819] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:46:59,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:46:59,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-09-01 13:46:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863688593] [2023-09-01 13:46:59,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:46:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 13:46:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 13:46:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 13:46:59,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:46:59,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1387 transitions, 26430 flow. Second operand has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:59,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:59,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:46:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:06,512 INFO L130 PetriNetUnfolder]: 10331/18073 cut-off events. [2023-09-01 13:47:06,512 INFO L131 PetriNetUnfolder]: For 379266/379368 co-relation queries the response was YES. [2023-09-01 13:47:06,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151051 conditions, 18073 events. 10331/18073 cut-off events. For 379266/379368 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 148255 event pairs, 1833 based on Foata normal form. 416/18450 useless extension candidates. Maximal degree in co-relation 150916. Up to 5761 conditions per place. [2023-09-01 13:47:06,751 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 1111 selfloop transitions, 503 changer transitions 184/1832 dead transitions. [2023-09-01 13:47:06,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1832 transitions, 36910 flow [2023-09-01 13:47:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 13:47:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 13:47:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2901 transitions. [2023-09-01 13:47:06,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41090651558073654 [2023-09-01 13:47:06,754 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2901 transitions. [2023-09-01 13:47:06,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2901 transitions. [2023-09-01 13:47:06,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:06,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2901 transitions. [2023-09-01 13:47:06,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 145.05) internal successors, (2901), 20 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:06,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:06,759 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:06,759 INFO L175 Difference]: Start difference. First operand has 396 places, 1387 transitions, 26430 flow. Second operand 20 states and 2901 transitions. [2023-09-01 13:47:06,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1832 transitions, 36910 flow [2023-09-01 13:47:10,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1832 transitions, 36291 flow, removed 214 selfloop flow, removed 7 redundant places. [2023-09-01 13:47:10,712 INFO L231 Difference]: Finished difference. Result has 412 places, 1393 transitions, 27440 flow [2023-09-01 13:47:10,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25405, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27440, PETRI_PLACES=412, PETRI_TRANSITIONS=1393} [2023-09-01 13:47:10,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2023-09-01 13:47:10,713 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1393 transitions, 27440 flow [2023-09-01 13:47:10,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:10,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:10,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:47:10,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:10,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:10,914 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:10,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -57058493, now seen corresponding path program 3 times [2023-09-01 13:47:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37453268] [2023-09-01 13:47:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37453268] [2023-09-01 13:47:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37453268] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751088068] [2023-09-01 13:47:11,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:47:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:11,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:11,004 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:11,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 13:47:11,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 13:47:11,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:11,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:47:11,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:11,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751088068] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:11,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:11,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 13:47:11,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314259461] [2023-09-01 13:47:11,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:47:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:47:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:47:11,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:11,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1393 transitions, 27440 flow. Second operand has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:11,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:11,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:11,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:18,370 INFO L130 PetriNetUnfolder]: 9498/16524 cut-off events. [2023-09-01 13:47:18,371 INFO L131 PetriNetUnfolder]: For 351504/351656 co-relation queries the response was YES. [2023-09-01 13:47:18,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140288 conditions, 16524 events. 9498/16524 cut-off events. For 351504/351656 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 133518 event pairs, 627 based on Foata normal form. 381/16888 useless extension candidates. Maximal degree in co-relation 140150. Up to 4395 conditions per place. [2023-09-01 13:47:18,532 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1407 selfloop transitions, 316 changer transitions 358/2115 dead transitions. [2023-09-01 13:47:18,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2115 transitions, 43551 flow [2023-09-01 13:47:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-09-01 13:47:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-09-01 13:47:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4578 transitions. [2023-09-01 13:47:18,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40527620396600567 [2023-09-01 13:47:18,535 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4578 transitions. [2023-09-01 13:47:18,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4578 transitions. [2023-09-01 13:47:18,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:18,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4578 transitions. [2023-09-01 13:47:18,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 143.0625) internal successors, (4578), 32 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:18,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:18,546 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:18,546 INFO L175 Difference]: Start difference. First operand has 412 places, 1393 transitions, 27440 flow. Second operand 32 states and 4578 transitions. [2023-09-01 13:47:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2115 transitions, 43551 flow [2023-09-01 13:47:21,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 2115 transitions, 42969 flow, removed 215 selfloop flow, removed 9 redundant places. [2023-09-01 13:47:21,401 INFO L231 Difference]: Finished difference. Result has 430 places, 1334 transitions, 26350 flow [2023-09-01 13:47:21,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26581, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26350, PETRI_PLACES=430, PETRI_TRANSITIONS=1334} [2023-09-01 13:47:21,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2023-09-01 13:47:21,403 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1334 transitions, 26350 flow [2023-09-01 13:47:21,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:21,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:21,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:47:21,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-09-01 13:47:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:21,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:21,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash -720137693, now seen corresponding path program 4 times [2023-09-01 13:47:21,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:21,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526767582] [2023-09-01 13:47:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:47:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526767582] [2023-09-01 13:47:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526767582] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377897325] [2023-09-01 13:47:21,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:47:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:21,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:21,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 13:47:21,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:47:21,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:21,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:47:21,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:47:21,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:47:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377897325] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:21,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 13:47:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775815752] [2023-09-01 13:47:21,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:21,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:47:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:47:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:47:22,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:22,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1334 transitions, 26350 flow. Second operand has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:22,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:22,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:22,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:27,551 INFO L130 PetriNetUnfolder]: 7655/13389 cut-off events. [2023-09-01 13:47:27,551 INFO L131 PetriNetUnfolder]: For 267220/267376 co-relation queries the response was YES. [2023-09-01 13:47:27,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 13389 events. 7655/13389 cut-off events. For 267220/267376 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 105318 event pairs, 754 based on Foata normal form. 425/13797 useless extension candidates. Maximal degree in co-relation 114122. Up to 4139 conditions per place. [2023-09-01 13:47:27,695 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 1191 selfloop transitions, 419 changer transitions 198/1842 dead transitions. [2023-09-01 13:47:27,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1842 transitions, 37530 flow [2023-09-01 13:47:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-09-01 13:47:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-09-01 13:47:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4450 transitions. [2023-09-01 13:47:27,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066526546650827 [2023-09-01 13:47:27,701 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4450 transitions. [2023-09-01 13:47:27,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4450 transitions. [2023-09-01 13:47:27,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:27,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4450 transitions. [2023-09-01 13:47:27,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 143.5483870967742) internal successors, (4450), 31 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:27,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:27,715 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:27,715 INFO L175 Difference]: Start difference. First operand has 430 places, 1334 transitions, 26350 flow. Second operand 31 states and 4450 transitions. [2023-09-01 13:47:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1842 transitions, 37530 flow [2023-09-01 13:47:29,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1842 transitions, 35732 flow, removed 341 selfloop flow, removed 31 redundant places. [2023-09-01 13:47:29,790 INFO L231 Difference]: Finished difference. Result has 433 places, 1227 transitions, 23945 flow [2023-09-01 13:47:29,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=23945, PETRI_PLACES=433, PETRI_TRANSITIONS=1227} [2023-09-01 13:47:29,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2023-09-01 13:47:29,792 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1227 transitions, 23945 flow [2023-09-01 13:47:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:29,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:29,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:47:29,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:29,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 13:47:29,998 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:29,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1459680607, now seen corresponding path program 5 times [2023-09-01 13:47:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447079620] [2023-09-01 13:47:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447079620] [2023-09-01 13:47:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447079620] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314947494] [2023-09-01 13:47:30,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:47:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:30,189 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:30,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 13:47:30,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:47:30,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:30,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:47:30,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:30,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:47:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314947494] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:30,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:30,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-09-01 13:47:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030926182] [2023-09-01 13:47:30,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:30,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 13:47:30,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 13:47:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-09-01 13:47:30,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:30,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1227 transitions, 23945 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:30,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:30,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:30,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:33,994 INFO L130 PetriNetUnfolder]: 5253/9441 cut-off events. [2023-09-01 13:47:33,994 INFO L131 PetriNetUnfolder]: For 189872/190014 co-relation queries the response was YES. [2023-09-01 13:47:34,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75915 conditions, 9441 events. 5253/9441 cut-off events. For 189872/190014 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 71833 event pairs, 449 based on Foata normal form. 737/10157 useless extension candidates. Maximal degree in co-relation 75777. Up to 3529 conditions per place. [2023-09-01 13:47:34,078 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 728 selfloop transitions, 50 changer transitions 388/1184 dead transitions. [2023-09-01 13:47:34,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1184 transitions, 22834 flow [2023-09-01 13:47:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 13:47:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 13:47:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2560 transitions. [2023-09-01 13:47:34,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40289581366068616 [2023-09-01 13:47:34,080 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2560 transitions. [2023-09-01 13:47:34,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2560 transitions. [2023-09-01 13:47:34,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:34,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2560 transitions. [2023-09-01 13:47:34,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.22222222222223) internal successors, (2560), 18 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:34,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:34,087 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:34,087 INFO L175 Difference]: Start difference. First operand has 433 places, 1227 transitions, 23945 flow. Second operand 18 states and 2560 transitions. [2023-09-01 13:47:34,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1184 transitions, 22834 flow [2023-09-01 13:47:35,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1184 transitions, 22349 flow, removed 50 selfloop flow, removed 24 redundant places. [2023-09-01 13:47:35,310 INFO L231 Difference]: Finished difference. Result has 395 places, 674 transitions, 11876 flow [2023-09-01 13:47:35,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16613, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11876, PETRI_PLACES=395, PETRI_TRANSITIONS=674} [2023-09-01 13:47:35,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-09-01 13:47:35,312 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 674 transitions, 11876 flow [2023-09-01 13:47:35,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:35,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:35,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:47:35,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 13:47:35,518 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:35,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 989218226, now seen corresponding path program 16 times [2023-09-01 13:47:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002374972] [2023-09-01 13:47:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:47:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002374972] [2023-09-01 13:47:35,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002374972] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:35,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991346101] [2023-09-01 13:47:35,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:47:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:35,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:35,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 13:47:35,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:47:35,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:35,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:47:35,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:47:35,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:47:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991346101] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:35,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:35,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-09-01 13:47:35,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841254127] [2023-09-01 13:47:35,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:35,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 13:47:35,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 13:47:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-09-01 13:47:36,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-09-01 13:47:36,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 674 transitions, 11876 flow. Second operand has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:36,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:36,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-09-01 13:47:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:38,602 INFO L130 PetriNetUnfolder]: 3313/5243 cut-off events. [2023-09-01 13:47:38,602 INFO L131 PetriNetUnfolder]: For 118541/118541 co-relation queries the response was YES. [2023-09-01 13:47:38,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46932 conditions, 5243 events. 3313/5243 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29570 event pairs, 320 based on Foata normal form. 385/5625 useless extension candidates. Maximal degree in co-relation 46805. Up to 2053 conditions per place. [2023-09-01 13:47:38,649 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 431 selfloop transitions, 539 changer transitions 0/970 dead transitions. [2023-09-01 13:47:38,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 18377 flow [2023-09-01 13:47:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-09-01 13:47:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-09-01 13:47:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5230 transitions. [2023-09-01 13:47:38,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38989115849112865 [2023-09-01 13:47:38,653 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5230 transitions. [2023-09-01 13:47:38,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5230 transitions. [2023-09-01 13:47:38,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:38,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5230 transitions. [2023-09-01 13:47:38,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 137.6315789473684) internal successors, (5230), 38 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:38,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:38,662 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:38,663 INFO L175 Difference]: Start difference. First operand has 395 places, 674 transitions, 11876 flow. Second operand 38 states and 5230 transitions. [2023-09-01 13:47:38,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 18377 flow [2023-09-01 13:47:39,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 970 transitions, 16390 flow, removed 619 selfloop flow, removed 28 redundant places. [2023-09-01 13:47:39,199 INFO L231 Difference]: Finished difference. Result has 318 places, 779 transitions, 14356 flow [2023-09-01 13:47:39,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14356, PETRI_PLACES=318, PETRI_TRANSITIONS=779} [2023-09-01 13:47:39,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2023-09-01 13:47:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 779 transitions, 14356 flow [2023-09-01 13:47:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:39,200 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, 1, 1] [2023-09-01 13:47:39,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-09-01 13:47:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:39,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:39,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2072912546, now seen corresponding path program 17 times [2023-09-01 13:47:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947556620] [2023-09-01 13:47:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947556620] [2023-09-01 13:47:39,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947556620] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:39,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470479637] [2023-09-01 13:47:39,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:47:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:39,521 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:39,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 13:47:39,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:47:39,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:39,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:47:39,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:39,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470479637] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:39,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-09-01 13:47:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080448992] [2023-09-01 13:47:39,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:39,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 13:47:39,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 13:47:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-09-01 13:47:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:40,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 779 transitions, 14356 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:40,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:40,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:40,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:42,399 INFO L130 PetriNetUnfolder]: 4158/6657 cut-off events. [2023-09-01 13:47:42,399 INFO L131 PetriNetUnfolder]: For 182123/182208 co-relation queries the response was YES. [2023-09-01 13:47:42,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63313 conditions, 6657 events. 4158/6657 cut-off events. For 182123/182208 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40055 event pairs, 503 based on Foata normal form. 53/6705 useless extension candidates. Maximal degree in co-relation 63181. Up to 2861 conditions per place. [2023-09-01 13:47:42,478 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 684 selfloop transitions, 355 changer transitions 0/1077 dead transitions. [2023-09-01 13:47:42,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1077 transitions, 21954 flow [2023-09-01 13:47:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 13:47:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 13:47:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2143 transitions. [2023-09-01 13:47:42,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40472143531633614 [2023-09-01 13:47:42,480 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2143 transitions. [2023-09-01 13:47:42,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2143 transitions. [2023-09-01 13:47:42,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:42,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2143 transitions. [2023-09-01 13:47:42,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.86666666666667) internal successors, (2143), 15 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:42,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:42,484 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:42,484 INFO L175 Difference]: Start difference. First operand has 318 places, 779 transitions, 14356 flow. Second operand 15 states and 2143 transitions. [2023-09-01 13:47:42,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1077 transitions, 21954 flow [2023-09-01 13:47:43,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 20028 flow, removed 656 selfloop flow, removed 11 redundant places. [2023-09-01 13:47:43,697 INFO L231 Difference]: Finished difference. Result has 328 places, 913 transitions, 16650 flow [2023-09-01 13:47:43,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=12772, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16650, PETRI_PLACES=328, PETRI_TRANSITIONS=913} [2023-09-01 13:47:43,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2023-09-01 13:47:43,698 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 913 transitions, 16650 flow [2023-09-01 13:47:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:43,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:43,699 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, 1, 1] [2023-09-01 13:47:43,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:43,900 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:43,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1999441316, now seen corresponding path program 18 times [2023-09-01 13:47:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306425927] [2023-09-01 13:47:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:43,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:44,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306425927] [2023-09-01 13:47:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306425927] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62152888] [2023-09-01 13:47:44,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:47:44,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:44,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:44,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:44,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-09-01 13:47:44,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:47:44,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:44,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:47:44,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:44,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:44,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62152888] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:44,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:44,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-09-01 13:47:44,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746534309] [2023-09-01 13:47:44,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 13:47:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 13:47:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-09-01 13:47:44,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:44,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 913 transitions, 16650 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:44,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:44,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:44,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:47,693 INFO L130 PetriNetUnfolder]: 5220/8343 cut-off events. [2023-09-01 13:47:47,693 INFO L131 PetriNetUnfolder]: For 223952/224067 co-relation queries the response was YES. [2023-09-01 13:47:47,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81851 conditions, 8343 events. 5220/8343 cut-off events. For 223952/224067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51860 event pairs, 514 based on Foata normal form. 75/8400 useless extension candidates. Maximal degree in co-relation 81717. Up to 2937 conditions per place. [2023-09-01 13:47:47,782 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 653 selfloop transitions, 503 changer transitions 0/1194 dead transitions. [2023-09-01 13:47:47,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1194 transitions, 24337 flow [2023-09-01 13:47:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:47:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:47:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2724 transitions. [2023-09-01 13:47:47,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406142835843149 [2023-09-01 13:47:47,785 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2724 transitions. [2023-09-01 13:47:47,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2724 transitions. [2023-09-01 13:47:47,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:47,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2724 transitions. [2023-09-01 13:47:47,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 143.3684210526316) internal successors, (2724), 19 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:47,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:47,790 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:47,790 INFO L175 Difference]: Start difference. First operand has 328 places, 913 transitions, 16650 flow. Second operand 19 states and 2724 transitions. [2023-09-01 13:47:47,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1194 transitions, 24337 flow [2023-09-01 13:47:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1194 transitions, 23973 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-09-01 13:47:49,093 INFO L231 Difference]: Finished difference. Result has 346 places, 992 transitions, 19914 flow [2023-09-01 13:47:49,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19914, PETRI_PLACES=346, PETRI_TRANSITIONS=992} [2023-09-01 13:47:49,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2023-09-01 13:47:49,094 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 992 transitions, 19914 flow [2023-09-01 13:47:49,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:49,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:49,095 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, 1, 1] [2023-09-01 13:47:49,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:49,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 13:47:49,296 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:49,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:49,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2058981304, now seen corresponding path program 19 times [2023-09-01 13:47:49,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:49,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224931980] [2023-09-01 13:47:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:49,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224931980] [2023-09-01 13:47:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224931980] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925567598] [2023-09-01 13:47:49,399 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:47:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:49,401 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:49,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-09-01 13:47:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:49,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:47:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:49,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:47:49,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925567598] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:49,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:49,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-09-01 13:47:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297800136] [2023-09-01 13:47:49,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:49,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 13:47:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 13:47:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-09-01 13:47:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:50,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 992 transitions, 19914 flow. Second operand has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:53,021 INFO L130 PetriNetUnfolder]: 5148/8230 cut-off events. [2023-09-01 13:47:53,021 INFO L131 PetriNetUnfolder]: For 247984/248087 co-relation queries the response was YES. [2023-09-01 13:47:53,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84492 conditions, 8230 events. 5148/8230 cut-off events. For 247984/248087 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50848 event pairs, 841 based on Foata normal form. 87/8307 useless extension candidates. Maximal degree in co-relation 84354. Up to 4387 conditions per place. [2023-09-01 13:47:53,111 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 802 selfloop transitions, 267 changer transitions 0/1106 dead transitions. [2023-09-01 13:47:53,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1106 transitions, 24119 flow [2023-09-01 13:47:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:47:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:47:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-09-01 13:47:53,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-09-01 13:47:53,113 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-09-01 13:47:53,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-09-01 13:47:53,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:53,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-09-01 13:47:53,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:53,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:53,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:53,116 INFO L175 Difference]: Start difference. First operand has 346 places, 992 transitions, 19914 flow. Second operand 10 states and 1421 transitions. [2023-09-01 13:47:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1106 transitions, 24119 flow [2023-09-01 13:47:54,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1106 transitions, 22799 flow, removed 271 selfloop flow, removed 20 redundant places. [2023-09-01 13:47:54,629 INFO L231 Difference]: Finished difference. Result has 329 places, 983 transitions, 19476 flow [2023-09-01 13:47:54,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19476, PETRI_PLACES=329, PETRI_TRANSITIONS=983} [2023-09-01 13:47:54,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2023-09-01 13:47:54,630 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 983 transitions, 19476 flow [2023-09-01 13:47:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:54,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:54,631 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, 1, 1] [2023-09-01 13:47:54,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-09-01 13:47:54,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 13:47:54,832 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:47:54,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:47:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1537945544, now seen corresponding path program 20 times [2023-09-01 13:47:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:47:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762552060] [2023-09-01 13:47:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:47:54,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:47:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:47:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:47:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762552060] [2023-09-01 13:47:54,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762552060] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:47:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358550357] [2023-09-01 13:47:54,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:47:54,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:47:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:47:54,970 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:47:54,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-09-01 13:47:55,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:47:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:47:55,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:47:55,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:47:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:55,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:47:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:47:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358550357] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:47:55,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:47:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-09-01 13:47:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192662245] [2023-09-01 13:47:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:47:55,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 13:47:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:47:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 13:47:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-09-01 13:47:55,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:47:55,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 983 transitions, 19476 flow. Second operand has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:55,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:47:55,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:47:55,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:47:58,418 INFO L130 PetriNetUnfolder]: 5100/8131 cut-off events. [2023-09-01 13:47:58,418 INFO L131 PetriNetUnfolder]: For 240212/240299 co-relation queries the response was YES. [2023-09-01 13:47:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82978 conditions, 8131 events. 5100/8131 cut-off events. For 240212/240299 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49891 event pairs, 839 based on Foata normal form. 69/8194 useless extension candidates. Maximal degree in co-relation 82842. Up to 4221 conditions per place. [2023-09-01 13:47:58,510 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 681 selfloop transitions, 365 changer transitions 0/1083 dead transitions. [2023-09-01 13:47:58,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1083 transitions, 23229 flow [2023-09-01 13:47:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 13:47:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 13:47:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-09-01 13:47:58,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40458408447077004 [2023-09-01 13:47:58,518 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-09-01 13:47:58,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-09-01 13:47:58,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:47:58,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-09-01 13:47:58,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:58,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:58,522 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:58,522 INFO L175 Difference]: Start difference. First operand has 329 places, 983 transitions, 19476 flow. Second operand 11 states and 1571 transitions. [2023-09-01 13:47:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1083 transitions, 23229 flow [2023-09-01 13:47:59,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1083 transitions, 22878 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-09-01 13:47:59,911 INFO L231 Difference]: Finished difference. Result has 333 places, 982 transitions, 19839 flow [2023-09-01 13:47:59,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19109, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19839, PETRI_PLACES=333, PETRI_TRANSITIONS=982} [2023-09-01 13:47:59,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2023-09-01 13:47:59,912 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 982 transitions, 19839 flow [2023-09-01 13:47:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:47:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:47:59,913 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, 1, 1] [2023-09-01 13:47:59,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-09-01 13:48:00,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 13:48:00,120 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:48:00,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:48:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1116558660, now seen corresponding path program 21 times [2023-09-01 13:48:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:48:00,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732308316] [2023-09-01 13:48:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:48:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:48:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:48:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:48:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732308316] [2023-09-01 13:48:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732308316] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:48:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795198607] [2023-09-01 13:48:00,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:48:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:48:00,217 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:48:00,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-09-01 13:48:00,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:48:00,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:48:00,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:48:00,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:48:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:00,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:48:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795198607] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:48:00,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:48:00,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 13:48:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71604307] [2023-09-01 13:48:00,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:48:00,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 13:48:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:48:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 13:48:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-09-01 13:48:00,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:48:00,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 982 transitions, 19839 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:00,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:48:00,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:48:00,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:48:03,397 INFO L130 PetriNetUnfolder]: 5019/7953 cut-off events. [2023-09-01 13:48:03,398 INFO L131 PetriNetUnfolder]: For 244884/244971 co-relation queries the response was YES. [2023-09-01 13:48:03,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81842 conditions, 7953 events. 5019/7953 cut-off events. For 244884/244971 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48070 event pairs, 877 based on Foata normal form. 85/8028 useless extension candidates. Maximal degree in co-relation 81706. Up to 4387 conditions per place. [2023-09-01 13:48:03,485 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1036 dead transitions. [2023-09-01 13:48:03,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1036 transitions, 22821 flow [2023-09-01 13:48:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:48:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:48:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-09-01 13:48:03,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-09-01 13:48:03,487 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-09-01 13:48:03,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-09-01 13:48:03,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:48:03,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-09-01 13:48:03,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:03,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:03,490 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:03,491 INFO L175 Difference]: Start difference. First operand has 333 places, 982 transitions, 19839 flow. Second operand 10 states and 1421 transitions. [2023-09-01 13:48:03,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1036 transitions, 22821 flow [2023-09-01 13:48:04,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1036 transitions, 22186 flow, removed 45 selfloop flow, removed 10 redundant places. [2023-09-01 13:48:04,883 INFO L231 Difference]: Finished difference. Result has 327 places, 958 transitions, 19481 flow [2023-09-01 13:48:04,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19481, PETRI_PLACES=327, PETRI_TRANSITIONS=958} [2023-09-01 13:48:04,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2023-09-01 13:48:04,884 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 958 transitions, 19481 flow [2023-09-01 13:48:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:04,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:48:04,885 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, 1, 1] [2023-09-01 13:48:04,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-09-01 13:48:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 13:48:05,089 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:48:05,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:48:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763192, now seen corresponding path program 22 times [2023-09-01 13:48:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:48:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574803830] [2023-09-01 13:48:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:48:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:48:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:48:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:48:05,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:48:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574803830] [2023-09-01 13:48:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574803830] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:48:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509069437] [2023-09-01 13:48:05,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:48:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:48:05,202 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:48:05,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-09-01 13:48:05,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:48:05,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:48:05,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:48:05,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:48:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:48:05,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:48:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:48:05,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509069437] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:48:05,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:48:05,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-09-01 13:48:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816155314] [2023-09-01 13:48:05,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:48:05,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 13:48:05,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:48:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 13:48:05,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-09-01 13:48:05,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:48:05,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 958 transitions, 19481 flow. Second operand has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:05,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:48:05,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:48:05,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:48:08,771 INFO L130 PetriNetUnfolder]: 4936/7811 cut-off events. [2023-09-01 13:48:08,772 INFO L131 PetriNetUnfolder]: For 243527/243620 co-relation queries the response was YES. [2023-09-01 13:48:08,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80534 conditions, 7811 events. 4936/7811 cut-off events. For 243527/243620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 47012 event pairs, 526 based on Foata normal form. 103/7890 useless extension candidates. Maximal degree in co-relation 80398. Up to 2911 conditions per place. [2023-09-01 13:48:08,863 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 604 selfloop transitions, 498 changer transitions 0/1137 dead transitions. [2023-09-01 13:48:08,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1137 transitions, 24707 flow [2023-09-01 13:48:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 13:48:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 13:48:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2300 transitions. [2023-09-01 13:48:08,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722379603399433 [2023-09-01 13:48:08,865 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2300 transitions. [2023-09-01 13:48:08,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2300 transitions. [2023-09-01 13:48:08,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:48:08,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2300 transitions. [2023-09-01 13:48:08,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 143.75) internal successors, (2300), 16 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:08,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:08,870 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:08,870 INFO L175 Difference]: Start difference. First operand has 327 places, 958 transitions, 19481 flow. Second operand 16 states and 2300 transitions. [2023-09-01 13:48:08,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1137 transitions, 24707 flow [2023-09-01 13:48:10,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1137 transitions, 24396 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-09-01 13:48:10,153 INFO L231 Difference]: Finished difference. Result has 332 places, 958 transitions, 20411 flow [2023-09-01 13:48:10,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19090, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20411, PETRI_PLACES=332, PETRI_TRANSITIONS=958} [2023-09-01 13:48:10,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2023-09-01 13:48:10,154 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 958 transitions, 20411 flow [2023-09-01 13:48:10,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:10,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:48:10,155 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, 1, 1] [2023-09-01 13:48:10,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-09-01 13:48:10,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:10,356 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:48:10,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:48:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1034104112, now seen corresponding path program 23 times [2023-09-01 13:48:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:48:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809324628] [2023-09-01 13:48:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:48:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:48:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:48:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:10,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:48:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809324628] [2023-09-01 13:48:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809324628] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:48:10,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405317842] [2023-09-01 13:48:10,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 13:48:10,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:10,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:48:10,465 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:48:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-09-01 13:48:10,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:48:10,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:48:10,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 13:48:10,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:48:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:10,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:48:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405317842] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:48:10,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:48:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-09-01 13:48:10,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234522199] [2023-09-01 13:48:10,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:48:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 13:48:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:48:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 13:48:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-09-01 13:48:11,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-09-01 13:48:11,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 958 transitions, 20411 flow. Second operand has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:11,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:48:11,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-09-01 13:48:11,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:48:13,853 INFO L130 PetriNetUnfolder]: 4976/7810 cut-off events. [2023-09-01 13:48:13,853 INFO L131 PetriNetUnfolder]: For 245461/245461 co-relation queries the response was YES. [2023-09-01 13:48:13,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 7810 events. 4976/7810 cut-off events. For 245461/245461 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 45950 event pairs, 345 based on Foata normal form. 46/7853 useless extension candidates. Maximal degree in co-relation 81630. Up to 2863 conditions per place. [2023-09-01 13:48:13,955 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 584 selfloop transitions, 569 changer transitions 0/1153 dead transitions. [2023-09-01 13:48:13,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1153 transitions, 26748 flow [2023-09-01 13:48:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 13:48:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 13:48:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2758 transitions. [2023-09-01 13:48:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39065155807365437 [2023-09-01 13:48:13,958 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2758 transitions. [2023-09-01 13:48:13,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2758 transitions. [2023-09-01 13:48:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:48:13,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2758 transitions. [2023-09-01 13:48:13,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.9) internal successors, (2758), 20 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:13,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:13,964 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:13,964 INFO L175 Difference]: Start difference. First operand has 332 places, 958 transitions, 20411 flow. Second operand 20 states and 2758 transitions. [2023-09-01 13:48:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1153 transitions, 26748 flow [2023-09-01 13:48:15,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1153 transitions, 25541 flow, removed 94 selfloop flow, removed 12 redundant places. [2023-09-01 13:48:15,445 INFO L231 Difference]: Finished difference. Result has 341 places, 993 transitions, 21826 flow [2023-09-01 13:48:15,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=21826, PETRI_PLACES=341, PETRI_TRANSITIONS=993} [2023-09-01 13:48:15,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2023-09-01 13:48:15,446 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 993 transitions, 21826 flow [2023-09-01 13:48:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:15,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:48:15,447 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, 1, 1] [2023-09-01 13:48:15,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-09-01 13:48:15,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:15,648 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:48:15,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:48:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash -844689024, now seen corresponding path program 24 times [2023-09-01 13:48:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:48:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908811633] [2023-09-01 13:48:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:48:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:48:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:48:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:48:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908811633] [2023-09-01 13:48:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908811633] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:48:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641477812] [2023-09-01 13:48:15,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:48:15,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:15,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:48:15,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:48:15,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-09-01 13:48:15,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:48:15,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:48:15,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 13:48:15,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:48:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:16,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:48:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 13:48:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641477812] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:48:16,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:48:16,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 13:48:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513454056] [2023-09-01 13:48:16,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:48:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 13:48:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:48:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 13:48:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-09-01 13:48:16,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-09-01 13:48:16,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 993 transitions, 21826 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:16,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:48:16,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-09-01 13:48:16,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:48:19,123 INFO L130 PetriNetUnfolder]: 4844/7599 cut-off events. [2023-09-01 13:48:19,123 INFO L131 PetriNetUnfolder]: For 245831/245942 co-relation queries the response was YES. [2023-09-01 13:48:19,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80606 conditions, 7599 events. 4844/7599 cut-off events. For 245831/245942 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44737 event pairs, 1064 based on Foata normal form. 41/7614 useless extension candidates. Maximal degree in co-relation 80468. Up to 5787 conditions per place. [2023-09-01 13:48:19,212 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1039 dead transitions. [2023-09-01 13:48:19,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1039 transitions, 24366 flow [2023-09-01 13:48:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:48:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:48:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-09-01 13:48:19,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005665722379603 [2023-09-01 13:48:19,213 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-09-01 13:48:19,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-09-01 13:48:19,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:48:19,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-09-01 13:48:19,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:19,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:19,216 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:19,216 INFO L175 Difference]: Start difference. First operand has 341 places, 993 transitions, 21826 flow. Second operand 10 states and 1414 transitions. [2023-09-01 13:48:19,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1039 transitions, 24366 flow [2023-09-01 13:48:20,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1039 transitions, 24002 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-09-01 13:48:20,554 INFO L231 Difference]: Finished difference. Result has 345 places, 994 transitions, 22014 flow [2023-09-01 13:48:20,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21237, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22014, PETRI_PLACES=345, PETRI_TRANSITIONS=994} [2023-09-01 13:48:20,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-09-01 13:48:20,556 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 994 transitions, 22014 flow [2023-09-01 13:48:20,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:48:20,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:48:20,556 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, 1, 1, 1] [2023-09-01 13:48:20,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-09-01 13:48:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-09-01 13:48:20,757 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:48:20,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:48:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 964857070, now seen corresponding path program 6 times [2023-09-01 13:48:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:48:20,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929655220] [2023-09-01 13:48:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:48:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:48:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:48:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:48:22,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:48:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929655220] [2023-09-01 13:48:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929655220] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:48:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641643153] [2023-09-01 13:48:22,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:48:22,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:48:22,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:48:22,323 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:48:22,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-09-01 13:48:22,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 13:48:22,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:48:22,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 118 conjunts are in the unsatisfiable core [2023-09-01 13:48:22,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:48:22,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:22,517 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2023-09-01 13:48:22,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-09-01 13:48:22,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:22,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:22,735 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-09-01 13:48:22,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 37 [2023-09-01 13:48:22,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 13:48:22,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:48:23,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:23,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 13:48:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:23,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 13:48:23,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:23,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:48:23,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-09-01 13:48:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:48:23,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:48:23,823 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= c_~res1~0 (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-09-01 13:48:23,922 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse2 (select |c_#memory_int| c_~B~0.base)) (.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ c_~B~0.offset .cse1)) c_~res1~0 (select .cse2 (+ 4 c_~B~0.offset .cse1)) (select .cse0 (+ c_~A~0.offset 4 .cse1)))) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse4 (select .cse6 c_~A~0.base)) (.cse3 (select .cse6 c_~B~0.base)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse3 c_~B~0.offset) c_~res2~0 (select .cse4 c_~A~0.offset) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-09-01 13:48:23,936 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (select |c_#memory_int| c_~B~0.base))) (+ (select .cse0 c_~A~0.offset) (select .cse1 c_~B~0.offset) c_~res1~0 (select .cse0 (+ c_~A~0.offset 4)) (select .cse1 (+ 4 c_~B~0.offset)))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse5 c_~A~0.base)) (.cse2 (select .cse5 c_~B~0.base)) (.cse4 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse2 c_~B~0.offset) c_~res2~0 (select .cse3 c_~A~0.offset) (select .cse3 (+ c_~A~0.offset .cse4)) (select .cse2 (+ .cse4 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-09-01 13:48:23,969 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int)) (v_ArrVal_1760 (Array Int Int))) (or (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1760))) (= (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse2 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 c_~A~0.offset))) (let ((.cse6 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse4 (select .cse6 c_~A~0.base))) (+ (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse4 c_~A~0.offset)))))))) is different from false [2023-09-01 13:48:23,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:48:23,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-09-01 13:48:24,167 INFO L321 Elim1Store]: treesize reduction 16, result has 89.7 percent of original size [2023-09-01 13:48:24,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110582 treesize of output 86145 [2023-09-01 13:48:24,428 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,429 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:48:24,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2614 treesize of output 2398 [2023-09-01 13:48:24,489 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,490 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:48:24,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 2358 treesize of output 2022 [2023-09-01 13:48:24,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:48:24,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:48:24,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1910 treesize of output 1438 [2023-09-01 13:49:17,287 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:49:33,957 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:49:41,423 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 13:51:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-09-01 13:51:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641643153] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:51:42,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:51:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2023-09-01 13:51:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27694412] [2023-09-01 13:51:42,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:51:42,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-09-01 13:51:42,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:51:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-09-01 13:51:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1405, Unknown=11, NotChecked=316, Total=1892 [2023-09-01 13:51:42,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-09-01 13:51:42,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 994 transitions, 22014 flow. Second operand has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:51:42,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:51:42,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-09-01 13:51:42,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:51:49,935 INFO L130 PetriNetUnfolder]: 7755/12152 cut-off events. [2023-09-01 13:51:49,936 INFO L131 PetriNetUnfolder]: For 424246/424246 co-relation queries the response was YES. [2023-09-01 13:51:50,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132468 conditions, 12152 events. 7755/12152 cut-off events. For 424246/424246 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76776 event pairs, 639 based on Foata normal form. 13/12159 useless extension candidates. Maximal degree in co-relation 132329. Up to 7555 conditions per place. [2023-09-01 13:51:50,126 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 1029 selfloop transitions, 765 changer transitions 16/1810 dead transitions. [2023-09-01 13:51:50,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1810 transitions, 44533 flow [2023-09-01 13:51:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 13:51:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 13:51:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2536 transitions. [2023-09-01 13:51:50,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565762849048968 [2023-09-01 13:51:50,128 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2536 transitions. [2023-09-01 13:51:50,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2536 transitions. [2023-09-01 13:51:50,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:51:50,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2536 transitions. [2023-09-01 13:51:50,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 90.57142857142857) internal successors, (2536), 28 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:51:50,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:51:50,134 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:51:50,134 INFO L175 Difference]: Start difference. First operand has 345 places, 994 transitions, 22014 flow. Second operand 28 states and 2536 transitions. [2023-09-01 13:51:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1810 transitions, 44533 flow [2023-09-01 13:51:54,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1810 transitions, 43349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 13:51:54,133 INFO L231 Difference]: Finished difference. Result has 377 places, 1524 transitions, 37404 flow [2023-09-01 13:51:54,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21444, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37404, PETRI_PLACES=377, PETRI_TRANSITIONS=1524} [2023-09-01 13:51:54,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2023-09-01 13:51:54,134 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1524 transitions, 37404 flow [2023-09-01 13:51:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:51:54,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:51:54,135 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, 1, 1, 1] [2023-09-01 13:51:54,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-09-01 13:51:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:51:54,336 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:51:54,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:51:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 66394832, now seen corresponding path program 7 times [2023-09-01 13:51:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:51:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944186891] [2023-09-01 13:51:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:51:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:51:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:51:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:51:55,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:51:55,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944186891] [2023-09-01 13:51:55,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944186891] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:51:55,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057824352] [2023-09-01 13:51:55,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 13:51:55,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:51:55,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:51:55,381 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:51:55,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-09-01 13:51:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:51:55,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core [2023-09-01 13:51:55,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:51:55,955 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:51:55,977 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-09-01 13:51:55,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 37 [2023-09-01 13:51:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:51:55,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:51:56,508 INFO L321 Elim1Store]: treesize reduction 16, result has 95.1 percent of original size [2023-09-01 13:51:56,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 326 [2023-09-01 13:52:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:52:28,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057824352] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:52:28,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:52:28,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 30 [2023-09-01 13:52:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977957304] [2023-09-01 13:52:28,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:52:28,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 13:52:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:52:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 13:52:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-09-01 13:52:30,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-09-01 13:52:30,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1524 transitions, 37404 flow. Second operand has 32 states, 32 states have (on average 121.96875) internal successors, (3903), 32 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:52:30,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:52:30,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-09-01 13:52:30,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:52:41,285 INFO L130 PetriNetUnfolder]: 11680/18604 cut-off events. [2023-09-01 13:52:41,285 INFO L131 PetriNetUnfolder]: For 768498/768498 co-relation queries the response was YES. [2023-09-01 13:52:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214074 conditions, 18604 events. 11680/18604 cut-off events. For 768498/768498 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 130404 event pairs, 546 based on Foata normal form. 12/18615 useless extension candidates. Maximal degree in co-relation 213922. Up to 9991 conditions per place. [2023-09-01 13:52:41,538 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 1215 selfloop transitions, 1630 changer transitions 21/2866 dead transitions. [2023-09-01 13:52:41,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 2866 transitions, 73839 flow [2023-09-01 13:52:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-09-01 13:52:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-09-01 13:52:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6726 transitions. [2023-09-01 13:52:41,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664196992808891 [2023-09-01 13:52:41,543 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6726 transitions. [2023-09-01 13:52:41,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6726 transitions. [2023-09-01 13:52:41,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:52:41,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6726 transitions. [2023-09-01 13:52:41,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 129.34615384615384) internal successors, (6726), 52 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:52:41,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:52:41,556 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:52:41,556 INFO L175 Difference]: Start difference. First operand has 377 places, 1524 transitions, 37404 flow. Second operand 52 states and 6726 transitions. [2023-09-01 13:52:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 2866 transitions, 73839 flow [2023-09-01 13:52:49,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2866 transitions, 71805 flow, removed 1009 selfloop flow, removed 5 redundant places. [2023-09-01 13:52:49,117 INFO L231 Difference]: Finished difference. Result has 450 places, 2499 transitions, 67777 flow [2023-09-01 13:52:49,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=36352, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=67777, PETRI_PLACES=450, PETRI_TRANSITIONS=2499} [2023-09-01 13:52:49,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2023-09-01 13:52:49,118 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2499 transitions, 67777 flow [2023-09-01 13:52:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 121.96875) internal successors, (3903), 32 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:52:49,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:52:49,119 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, 1, 1, 1] [2023-09-01 13:52:49,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-09-01 13:52:49,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:52:49,323 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:52:49,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:52:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1612068568, now seen corresponding path program 8 times [2023-09-01 13:52:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:52:49,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321844161] [2023-09-01 13:52:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:52:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:52:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:52:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:52:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:52:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321844161] [2023-09-01 13:52:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321844161] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:52:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691447025] [2023-09-01 13:52:50,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:52:50,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:52:50,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:52:50,779 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:52:50,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-09-01 13:52:50,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:52:50,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:52:50,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 106 conjunts are in the unsatisfiable core [2023-09-01 13:52:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:52:51,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 13:52:51,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:52:51,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:52:51,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:52:51,748 INFO L321 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2023-09-01 13:52:51,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2023-09-01 13:52:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:52:51,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15