./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:44:34,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:44:34,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:44:34,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:44:34,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:44:34,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:44:34,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:44:34,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:44:34,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:44:34,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:44:34,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:44:34,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:44:34,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:44:34,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:44:34,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:44:34,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:44:34,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:44:34,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:44:34,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:44:34,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:44:34,955 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:44:34,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:44:34,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:44:34,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:44:34,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:44:34,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:44:34,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:44:34,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:44:34,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:44:34,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:44:34,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:44:34,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:44:34,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:44:34,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:44:34,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:44:34,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:44:34,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:44:34,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:44:34,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:44:34,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:44:34,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:44:34,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:44:34,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:44:35,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:44:35,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:44:35,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:44:35,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:44:35,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:44:35,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:44:35,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:44:35,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:44:35,015 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:44:35,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:44:35,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:44:35,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:44:35,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:44:35,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:44:35,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:44:35,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:44:35,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:44:35,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:44:35,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:44:35,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:44:35,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:44:35,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:44:35,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:44:35,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:44:35,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:44:35,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:44:35,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:44:35,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:44:35,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:44:35,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:44:35,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:44:35,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:44:35,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:44:35,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-07-22 21:44:35,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:44:35,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:44:35,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:44:35,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:44:35,280 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:44:35,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-22 21:44:35,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c033acbad/9a0cecc40bbe48e1b18a22aa92484a03/FLAG2586ca826 [2022-07-22 21:44:35,715 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:44:35,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-07-22 21:44:35,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c033acbad/9a0cecc40bbe48e1b18a22aa92484a03/FLAG2586ca826 [2022-07-22 21:44:36,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c033acbad/9a0cecc40bbe48e1b18a22aa92484a03 [2022-07-22 21:44:36,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:44:36,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:44:36,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:44:36,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:44:36,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:44:36,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e710b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36, skipping insertion in model container [2022-07-22 21:44:36,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:44:36,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:44:36,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-07-22 21:44:36,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:44:36,341 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:44:36,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-07-22 21:44:36,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:44:36,379 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:44:36,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36 WrapperNode [2022-07-22 21:44:36,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:44:36,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:44:36,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:44:36,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:44:36,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,427 INFO L137 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-07-22 21:44:36,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:44:36,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:44:36,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:44:36,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:44:36,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:44:36,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:44:36,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:44:36,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:44:36,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (1/1) ... [2022-07-22 21:44:36,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:44:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:36,501 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) [2022-07-22 21:44:36,507 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 [2022-07-22 21:44:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:44:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:44:36,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:44:36,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:44:36,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:44:36,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:44:36,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:44:36,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:44:36,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:44:36,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:44:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 21:44:36,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 21:44:36,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:44:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-22 21:44:36,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-22 21:44:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-22 21:44:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-22 21:44:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:44:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:44:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:44:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:44:36,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:44:36,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:44:36,541 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:44:36,638 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:44:36,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:44:37,107 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:44:37,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:44:37,298 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-22 21:44:37,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:44:37 BoogieIcfgContainer [2022-07-22 21:44:37,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:44:37,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:44:37,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:44:37,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:44:37,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:44:36" (1/3) ... [2022-07-22 21:44:37,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774da845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:44:37, skipping insertion in model container [2022-07-22 21:44:37,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:44:36" (2/3) ... [2022-07-22 21:44:37,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774da845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:44:37, skipping insertion in model container [2022-07-22 21:44:37,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:44:37" (3/3) ... [2022-07-22 21:44:37,312 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-07-22 21:44:37,318 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:44:37,327 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:44:37,328 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:44:37,328 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:44:37,446 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-22 21:44:37,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-07-22 21:44:37,635 INFO L129 PetriNetUnfolder]: 18/232 cut-off events. [2022-07-22 21:44:37,635 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:44:37,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 232 events. 18/232 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-07-22 21:44:37,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-07-22 21:44:37,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-07-22 21:44:37,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:44:37,684 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@220e0663, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d61297f [2022-07-22 21:44:37,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-22 21:44:37,719 INFO L129 PetriNetUnfolder]: 18/222 cut-off events. [2022-07-22 21:44:37,720 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:44:37,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:37,721 INFO L200 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:37,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -124297982, now seen corresponding path program 1 times [2022-07-22 21:44:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453931779] [2022-07-22 21:44:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453931779] [2022-07-22 21:44:38,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453931779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:38,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:38,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:44:38,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060054728] [2022-07-22 21:44:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:38,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:44:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:44:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:44:38,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 264 [2022-07-22 21:44:38,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 223 transitions, 494 flow. Second operand has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:38,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:38,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 264 [2022-07-22 21:44:38,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:38,622 INFO L129 PetriNetUnfolder]: 1084/2340 cut-off events. [2022-07-22 21:44:38,623 INFO L130 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2022-07-22 21:44:38,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 2340 events. 1084/2340 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13056 event pairs, 627 based on Foata normal form. 309/2437 useless extension candidates. Maximal degree in co-relation 4157. Up to 1445 conditions per place. [2022-07-22 21:44:38,655 INFO L132 encePairwiseOnDemand]: 255/264 looper letters, 30 selfloop transitions, 0 changer transitions 4/214 dead transitions. [2022-07-22 21:44:38,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 214 transitions, 536 flow [2022-07-22 21:44:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:44:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:44:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2022-07-22 21:44:38,675 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8920454545454546 [2022-07-22 21:44:38,676 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2022-07-22 21:44:38,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2022-07-22 21:44:38,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:38,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2022-07-22 21:44:38,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:38,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:38,696 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:38,698 INFO L186 Difference]: Start difference. First operand has 224 places, 223 transitions, 494 flow. Second operand 2 states and 471 transitions. [2022-07-22 21:44:38,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 214 transitions, 536 flow [2022-07-22 21:44:38,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 214 transitions, 504 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-22 21:44:38,711 INFO L242 Difference]: Finished difference. Result has 213 places, 210 transitions, 436 flow [2022-07-22 21:44:38,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=436, PETRI_PLACES=213, PETRI_TRANSITIONS=210} [2022-07-22 21:44:38,720 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -11 predicate places. [2022-07-22 21:44:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 210 transitions, 436 flow [2022-07-22 21:44:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 227.0) internal successors, (454), 2 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:38,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:38,722 INFO L200 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, 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, 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, 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, 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, 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, 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, 1] [2022-07-22 21:44:38,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:44:38,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:38,724 INFO L85 PathProgramCache]: Analyzing trace with hash 338119102, now seen corresponding path program 1 times [2022-07-22 21:44:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:38,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145726451] [2022-07-22 21:44:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:39,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145726451] [2022-07-22 21:44:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145726451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:39,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:39,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:44:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072343546] [2022-07-22 21:44:39,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:39,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:44:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:39,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:44:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:44:39,129 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-22 21:44:39,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 210 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:39,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:39,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-22 21:44:39,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:40,448 INFO L129 PetriNetUnfolder]: 3024/6500 cut-off events. [2022-07-22 21:44:40,451 INFO L130 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-07-22 21:44:40,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 6500 events. 3024/6500 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 49241 event pairs, 737 based on Foata normal form. 1/5842 useless extension candidates. Maximal degree in co-relation 10955. Up to 1683 conditions per place. [2022-07-22 21:44:40,513 INFO L132 encePairwiseOnDemand]: 253/264 looper letters, 95 selfloop transitions, 10 changer transitions 4/269 dead transitions. [2022-07-22 21:44:40,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 269 transitions, 799 flow [2022-07-22 21:44:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:44:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:44:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-07-22 21:44:40,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7967171717171717 [2022-07-22 21:44:40,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-07-22 21:44:40,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-07-22 21:44:40,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:40,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-07-22 21:44:40,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:40,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:40,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:40,527 INFO L186 Difference]: Start difference. First operand has 213 places, 210 transitions, 436 flow. Second operand 6 states and 1262 transitions. [2022-07-22 21:44:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 269 transitions, 799 flow [2022-07-22 21:44:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 269 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:44:40,538 INFO L242 Difference]: Finished difference. Result has 218 places, 217 transitions, 499 flow [2022-07-22 21:44:40,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2022-07-22 21:44:40,540 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -6 predicate places. [2022-07-22 21:44:40,540 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 499 flow [2022-07-22 21:44:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:40,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:40,542 INFO L200 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, 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, 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, 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, 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, 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, 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, 1] [2022-07-22 21:44:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:44:40,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1295048629, now seen corresponding path program 1 times [2022-07-22 21:44:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873818918] [2022-07-22 21:44:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:40,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:40,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873818918] [2022-07-22 21:44:40,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873818918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:40,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:40,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:44:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911772903] [2022-07-22 21:44:40,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:40,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:44:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:44:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:44:40,754 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 264 [2022-07-22 21:44:40,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 217 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:40,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:40,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 264 [2022-07-22 21:44:40,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:42,411 INFO L129 PetriNetUnfolder]: 4929/10331 cut-off events. [2022-07-22 21:44:42,412 INFO L130 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2022-07-22 21:44:42,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19625 conditions, 10331 events. 4929/10331 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 85408 event pairs, 1899 based on Foata normal form. 1/9262 useless extension candidates. Maximal degree in co-relation 19617. Up to 3014 conditions per place. [2022-07-22 21:44:42,500 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 99 selfloop transitions, 14 changer transitions 4/277 dead transitions. [2022-07-22 21:44:42,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 277 transitions, 912 flow [2022-07-22 21:44:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:44:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:44:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-07-22 21:44:42,504 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7973484848484849 [2022-07-22 21:44:42,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-07-22 21:44:42,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-07-22 21:44:42,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:42,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-07-22 21:44:42,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:42,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:42,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:42,512 INFO L186 Difference]: Start difference. First operand has 218 places, 217 transitions, 499 flow. Second operand 6 states and 1263 transitions. [2022-07-22 21:44:42,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 277 transitions, 912 flow [2022-07-22 21:44:42,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 277 transitions, 902 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-22 21:44:42,520 INFO L242 Difference]: Finished difference. Result has 223 places, 224 transitions, 588 flow [2022-07-22 21:44:42,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=223, PETRI_TRANSITIONS=224} [2022-07-22 21:44:42,521 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, -1 predicate places. [2022-07-22 21:44:42,521 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 224 transitions, 588 flow [2022-07-22 21:44:42,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.33333333333334) internal successors, (1190), 6 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:42,522 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:42,523 INFO L200 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-22 21:44:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:44:42,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1073338544, now seen corresponding path program 1 times [2022-07-22 21:44:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502045346] [2022-07-22 21:44:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:42,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502045346] [2022-07-22 21:44:42,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502045346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:42,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:42,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:44:42,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500592002] [2022-07-22 21:44:42,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:42,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:44:42,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:42,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:44:42,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:44:42,766 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-22 21:44:42,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 224 transitions, 588 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:42,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:42,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-22 21:44:42,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:44,700 INFO L129 PetriNetUnfolder]: 6200/14218 cut-off events. [2022-07-22 21:44:44,700 INFO L130 PetriNetUnfolder]: For 6253/6253 co-relation queries the response was YES. [2022-07-22 21:44:44,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 14218 events. 6200/14218 cut-off events. For 6253/6253 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 130144 event pairs, 1544 based on Foata normal form. 573/13424 useless extension candidates. Maximal degree in co-relation 28084. Up to 3830 conditions per place. [2022-07-22 21:44:44,844 INFO L132 encePairwiseOnDemand]: 254/264 looper letters, 136 selfloop transitions, 9 changer transitions 0/308 dead transitions. [2022-07-22 21:44:44,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 308 transitions, 1227 flow [2022-07-22 21:44:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:44:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:44:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1707 transitions. [2022-07-22 21:44:44,852 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8082386363636364 [2022-07-22 21:44:44,852 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1707 transitions. [2022-07-22 21:44:44,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1707 transitions. [2022-07-22 21:44:44,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:44,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1707 transitions. [2022-07-22 21:44:44,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 213.375) internal successors, (1707), 8 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:44,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:44,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:44,864 INFO L186 Difference]: Start difference. First operand has 223 places, 224 transitions, 588 flow. Second operand 8 states and 1707 transitions. [2022-07-22 21:44:44,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 308 transitions, 1227 flow [2022-07-22 21:44:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 308 transitions, 1215 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-22 21:44:44,879 INFO L242 Difference]: Finished difference. Result has 231 places, 230 transitions, 657 flow [2022-07-22 21:44:44,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=657, PETRI_PLACES=231, PETRI_TRANSITIONS=230} [2022-07-22 21:44:44,881 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 7 predicate places. [2022-07-22 21:44:44,881 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 657 flow [2022-07-22 21:44:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:44,882 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:44,882 INFO L200 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-22 21:44:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:44:44,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1596457134, now seen corresponding path program 1 times [2022-07-22 21:44:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:44,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789546530] [2022-07-22 21:44:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:45,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:45,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789546530] [2022-07-22 21:44:45,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789546530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:44:45,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:44:45,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:44:45,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208906124] [2022-07-22 21:44:45,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:44:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:44:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:44:45,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 264 [2022-07-22 21:44:45,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 230 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:45,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:45,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 264 [2022-07-22 21:44:45,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:46,825 INFO L129 PetriNetUnfolder]: 5147/11865 cut-off events. [2022-07-22 21:44:46,825 INFO L130 PetriNetUnfolder]: For 7729/7729 co-relation queries the response was YES. [2022-07-22 21:44:46,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25545 conditions, 11865 events. 5147/11865 cut-off events. For 7729/7729 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 105262 event pairs, 2814 based on Foata normal form. 138/10801 useless extension candidates. Maximal degree in co-relation 25530. Up to 6246 conditions per place. [2022-07-22 21:44:46,938 INFO L132 encePairwiseOnDemand]: 256/264 looper letters, 63 selfloop transitions, 4 changer transitions 34/264 dead transitions. [2022-07-22 21:44:46,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 264 transitions, 970 flow [2022-07-22 21:44:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:44:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:44:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2022-07-22 21:44:46,942 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-07-22 21:44:46,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2022-07-22 21:44:46,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2022-07-22 21:44:46,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:46,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2022-07-22 21:44:46,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.28571428571428) internal successors, (1479), 7 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:46,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:46,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:46,951 INFO L186 Difference]: Start difference. First operand has 231 places, 230 transitions, 657 flow. Second operand 7 states and 1479 transitions. [2022-07-22 21:44:46,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 264 transitions, 970 flow [2022-07-22 21:44:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 264 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:44:46,960 INFO L242 Difference]: Finished difference. Result has 237 places, 227 transitions, 640 flow [2022-07-22 21:44:46,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=237, PETRI_TRANSITIONS=227} [2022-07-22 21:44:46,963 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 13 predicate places. [2022-07-22 21:44:46,963 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 227 transitions, 640 flow [2022-07-22 21:44:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:46,964 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:46,964 INFO L200 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:46,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:44:46,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:46,966 INFO L85 PathProgramCache]: Analyzing trace with hash -830309589, now seen corresponding path program 1 times [2022-07-22 21:44:46,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:46,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182952036] [2022-07-22 21:44:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:46,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:47,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182952036] [2022-07-22 21:44:47,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182952036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:47,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529223511] [2022-07-22 21:44:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:47,212 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) [2022-07-22 21:44:47,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:44:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 21:44:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:44:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:47,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:44:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:47,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529223511] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:44:47,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:44:47,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-22 21:44:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189554497] [2022-07-22 21:44:47,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:44:47,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:44:47,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:44:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:44:47,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-22 21:44:47,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 227 transitions, 640 flow. Second operand has 19 states, 19 states have (on average 201.47368421052633) internal successors, (3828), 19 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:47,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:47,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-22 21:44:47,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:50,249 INFO L129 PetriNetUnfolder]: 6200/13789 cut-off events. [2022-07-22 21:44:50,249 INFO L130 PetriNetUnfolder]: For 10756/10756 co-relation queries the response was YES. [2022-07-22 21:44:50,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31134 conditions, 13789 events. 6200/13789 cut-off events. For 10756/10756 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 123249 event pairs, 2030 based on Foata normal form. 156/12579 useless extension candidates. Maximal degree in co-relation 31117. Up to 3830 conditions per place. [2022-07-22 21:44:50,383 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 136 selfloop transitions, 17 changer transitions 0/315 dead transitions. [2022-07-22 21:44:50,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 315 transitions, 1339 flow [2022-07-22 21:44:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:44:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:44:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2891 transitions. [2022-07-22 21:44:50,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-22 21:44:50,390 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2891 transitions. [2022-07-22 21:44:50,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2891 transitions. [2022-07-22 21:44:50,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:50,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2891 transitions. [2022-07-22 21:44:50,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.5) internal successors, (2891), 14 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:50,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:50,406 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:50,406 INFO L186 Difference]: Start difference. First operand has 237 places, 227 transitions, 640 flow. Second operand 14 states and 2891 transitions. [2022-07-22 21:44:50,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 315 transitions, 1339 flow [2022-07-22 21:44:50,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 315 transitions, 1307 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-22 21:44:50,418 INFO L242 Difference]: Finished difference. Result has 245 places, 236 transitions, 735 flow [2022-07-22 21:44:50,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2022-07-22 21:44:50,420 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 21 predicate places. [2022-07-22 21:44:50,420 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 735 flow [2022-07-22 21:44:50,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 201.47368421052633) internal successors, (3828), 19 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:50,422 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:50,422 INFO L200 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:50,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:44:50,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 21:44:50,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1988649675, now seen corresponding path program 1 times [2022-07-22 21:44:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316376418] [2022-07-22 21:44:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:50,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316376418] [2022-07-22 21:44:50,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316376418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645039849] [2022-07-22 21:44:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:50,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:50,834 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) [2022-07-22 21:44:50,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:44:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:50,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 21:44:50,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:44:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:51,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:44:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:44:51,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645039849] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:44:51,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:44:51,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-22 21:44:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934929881] [2022-07-22 21:44:51,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:44:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:44:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:44:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:44:51,463 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-22 21:44:51,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 735 flow. Second operand has 18 states, 18 states have (on average 201.77777777777777) internal successors, (3632), 18 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:51,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:51,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-22 21:44:51,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:53,228 INFO L129 PetriNetUnfolder]: 4877/12051 cut-off events. [2022-07-22 21:44:53,228 INFO L130 PetriNetUnfolder]: For 10643/10643 co-relation queries the response was YES. [2022-07-22 21:44:53,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26948 conditions, 12051 events. 4877/12051 cut-off events. For 10643/10643 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 112182 event pairs, 1253 based on Foata normal form. 408/11200 useless extension candidates. Maximal degree in co-relation 26928. Up to 3505 conditions per place. [2022-07-22 21:44:53,328 INFO L132 encePairwiseOnDemand]: 248/264 looper letters, 93 selfloop transitions, 14 changer transitions 38/307 dead transitions. [2022-07-22 21:44:53,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 307 transitions, 1348 flow [2022-07-22 21:44:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:44:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:44:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2885 transitions. [2022-07-22 21:44:53,335 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7805735930735931 [2022-07-22 21:44:53,335 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2885 transitions. [2022-07-22 21:44:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2885 transitions. [2022-07-22 21:44:53,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:53,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2885 transitions. [2022-07-22 21:44:53,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.07142857142858) internal successors, (2885), 14 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:53,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:53,353 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 264.0) internal successors, (3960), 15 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:53,354 INFO L186 Difference]: Start difference. First operand has 245 places, 236 transitions, 735 flow. Second operand 14 states and 2885 transitions. [2022-07-22 21:44:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 307 transitions, 1348 flow [2022-07-22 21:44:53,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 307 transitions, 1331 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-22 21:44:53,365 INFO L242 Difference]: Finished difference. Result has 257 places, 233 transitions, 729 flow [2022-07-22 21:44:53,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=729, PETRI_PLACES=257, PETRI_TRANSITIONS=233} [2022-07-22 21:44:53,366 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 33 predicate places. [2022-07-22 21:44:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 233 transitions, 729 flow [2022-07-22 21:44:53,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 201.77777777777777) internal successors, (3632), 18 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:53,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:53,375 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:53,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 21:44:53,591 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,SelfDestructingSolverStorable6 [2022-07-22 21:44:53,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1697452556, now seen corresponding path program 2 times [2022-07-22 21:44:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544091846] [2022-07-22 21:44:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:53,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:53,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:53,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544091846] [2022-07-22 21:44:53,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544091846] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:53,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799051727] [2022-07-22 21:44:53,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:44:53,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:53,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:53,830 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) [2022-07-22 21:44:53,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:44:54,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:44:54,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:44:54,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 21:44:54,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:44:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:54,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:44:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:54,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799051727] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:54,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:44:54,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-22 21:44:54,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395658068] [2022-07-22 21:44:54,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:54,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:44:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:54,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:44:54,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:44:54,536 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-22 21:44:54,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 233 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:54,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:54,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-22 21:44:54,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:55,758 INFO L129 PetriNetUnfolder]: 3360/7807 cut-off events. [2022-07-22 21:44:55,758 INFO L130 PetriNetUnfolder]: For 10666/10666 co-relation queries the response was YES. [2022-07-22 21:44:55,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20372 conditions, 7807 events. 3360/7807 cut-off events. For 10666/10666 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 64724 event pairs, 1268 based on Foata normal form. 162/7253 useless extension candidates. Maximal degree in co-relation 20348. Up to 4107 conditions per place. [2022-07-22 21:44:55,821 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 85 selfloop transitions, 11 changer transitions 0/258 dead transitions. [2022-07-22 21:44:55,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 258 transitions, 1056 flow [2022-07-22 21:44:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:44:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:44:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-22 21:44:55,827 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-22 21:44:55,827 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-22 21:44:55,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-22 21:44:55,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:55,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-22 21:44:55,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:55,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:55,837 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:55,837 INFO L186 Difference]: Start difference. First operand has 257 places, 233 transitions, 729 flow. Second operand 10 states and 2053 transitions. [2022-07-22 21:44:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 258 transitions, 1056 flow [2022-07-22 21:44:55,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 258 transitions, 992 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-07-22 21:44:55,849 INFO L242 Difference]: Finished difference. Result has 249 places, 236 transitions, 731 flow [2022-07-22 21:44:55,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=731, PETRI_PLACES=249, PETRI_TRANSITIONS=236} [2022-07-22 21:44:55,850 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 25 predicate places. [2022-07-22 21:44:55,851 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 236 transitions, 731 flow [2022-07-22 21:44:55,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:55,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:55,852 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:55,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:44:56,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:56,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1013384774, now seen corresponding path program 2 times [2022-07-22 21:44:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:56,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596820890] [2022-07-22 21:44:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596820890] [2022-07-22 21:44:56,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596820890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:56,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124252110] [2022-07-22 21:44:56,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:44:56,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:56,220 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) [2022-07-22 21:44:56,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:44:56,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:44:56,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:44:56,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 21:44:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:44:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:56,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:44:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:44:56,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124252110] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:56,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:44:56,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 18 [2022-07-22 21:44:56,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852831508] [2022-07-22 21:44:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:44:56,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:44:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:44:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:44:56,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:44:56,869 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 264 [2022-07-22 21:44:56,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 236 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:56,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:44:56,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 264 [2022-07-22 21:44:56,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:44:57,608 INFO L129 PetriNetUnfolder]: 2541/5996 cut-off events. [2022-07-22 21:44:57,608 INFO L130 PetriNetUnfolder]: For 6635/6635 co-relation queries the response was YES. [2022-07-22 21:44:57,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15376 conditions, 5996 events. 2541/5996 cut-off events. For 6635/6635 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 47086 event pairs, 1043 based on Foata normal form. 114/5560 useless extension candidates. Maximal degree in co-relation 15355. Up to 3108 conditions per place. [2022-07-22 21:44:57,662 INFO L132 encePairwiseOnDemand]: 252/264 looper letters, 89 selfloop transitions, 11 changer transitions 0/262 dead transitions. [2022-07-22 21:44:57,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 262 transitions, 1063 flow [2022-07-22 21:44:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:44:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:44:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2053 transitions. [2022-07-22 21:44:57,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776515151515152 [2022-07-22 21:44:57,667 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2053 transitions. [2022-07-22 21:44:57,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2053 transitions. [2022-07-22 21:44:57,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:44:57,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2053 transitions. [2022-07-22 21:44:57,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:57,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:57,677 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 264.0) internal successors, (2904), 11 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:57,677 INFO L186 Difference]: Start difference. First operand has 249 places, 236 transitions, 731 flow. Second operand 10 states and 2053 transitions. [2022-07-22 21:44:57,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 262 transitions, 1063 flow [2022-07-22 21:44:57,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 262 transitions, 1030 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-22 21:44:57,688 INFO L242 Difference]: Finished difference. Result has 252 places, 238 transitions, 747 flow [2022-07-22 21:44:57,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=747, PETRI_PLACES=252, PETRI_TRANSITIONS=238} [2022-07-22 21:44:57,689 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 28 predicate places. [2022-07-22 21:44:57,690 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 238 transitions, 747 flow [2022-07-22 21:44:57,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 202.77777777777777) internal successors, (1825), 9 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:44:57,690 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:44:57,691 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:44:57,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:44:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:57,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:44:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:44:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1766561699, now seen corresponding path program 1 times [2022-07-22 21:44:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:44:57,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232472997] [2022-07-22 21:44:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:44:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:44:58,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:44:58,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232472997] [2022-07-22 21:44:58,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232472997] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:44:58,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824468416] [2022-07-22 21:44:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:44:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:44:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:44:58,472 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) [2022-07-22 21:44:58,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:44:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:44:58,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-22 21:44:58,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:44:59,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:44:59,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-22 21:44:59,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-07-22 21:44:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:44:59,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:44:59,612 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0))) (forall ((v_ArrVal_483 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (+ c_~s_6~0 1)))) is different from false [2022-07-22 21:44:59,638 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1))) (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-07-22 21:45:01,677 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))))) is different from false [2022-07-22 21:45:01,873 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1)))))) is different from false [2022-07-22 21:45:01,891 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:45:01,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 48 treesize of output 39 [2022-07-22 21:45:01,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 21:45:01,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:45:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:45:01,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2022-07-22 21:45:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-07-22 21:45:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824468416] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:45:02,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:45:02,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 42 [2022-07-22 21:45:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341633830] [2022-07-22 21:45:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:45:02,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 21:45:02,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:45:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 21:45:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1286, Unknown=4, NotChecked=300, Total=1722 [2022-07-22 21:45:02,212 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 264 [2022-07-22 21:45:02,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 238 transitions, 747 flow. Second operand has 42 states, 42 states have (on average 145.0952380952381) internal successors, (6094), 42 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:02,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:45:02,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 264 [2022-07-22 21:45:02,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:45:04,888 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))))) (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1))))) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0)) is different from false [2022-07-22 21:45:04,921 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))))) (and (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= .cse0 c_~s_6~0) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 1))))) (<= c_~s_6~0 .cse0) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (<= c_~s_6~0 (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))))) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0))) is different from false [2022-07-22 21:45:06,954 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)))))) (<= 1 c_~i_7~0) (<= (+ c_~X_0~0.base 1) |c_#StackHeapBarrier|) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= c_~s_6~0 0) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_#StackHeapBarrier|) (<= c_~s_6~0 c_~s_2~0) (< c_~s_2~0 (+ c_~s_6~0 1)) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_26| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_26|)) (forall ((v_ArrVal_483 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_26| v_ArrVal_483) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0 1))))) (<= c_~i_7~0 1) (= c_~X_0~0.offset 0) (= (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset (* 4 c_~i_7~0))) c_~t_8~0)) is different from false [2022-07-22 21:45:18,508 INFO L129 PetriNetUnfolder]: 51475/83129 cut-off events. [2022-07-22 21:45:18,508 INFO L130 PetriNetUnfolder]: For 110645/110645 co-relation queries the response was YES. [2022-07-22 21:45:19,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240638 conditions, 83129 events. 51475/83129 cut-off events. For 110645/110645 co-relation queries the response was YES. Maximal size of possible extension queue 2579. Compared 694340 event pairs, 6713 based on Foata normal form. 1/79067 useless extension candidates. Maximal degree in co-relation 240616. Up to 39671 conditions per place. [2022-07-22 21:45:19,504 INFO L132 encePairwiseOnDemand]: 213/264 looper letters, 316 selfloop transitions, 226 changer transitions 4/657 dead transitions. [2022-07-22 21:45:19,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 657 transitions, 3731 flow [2022-07-22 21:45:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 21:45:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-22 21:45:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4397 transitions. [2022-07-22 21:45:19,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5948322510822511 [2022-07-22 21:45:19,515 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4397 transitions. [2022-07-22 21:45:19,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4397 transitions. [2022-07-22 21:45:19,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:45:19,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4397 transitions. [2022-07-22 21:45:19,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 157.03571428571428) internal successors, (4397), 28 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:19,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 264.0) internal successors, (7656), 29 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:19,537 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 264.0) internal successors, (7656), 29 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:19,537 INFO L186 Difference]: Start difference. First operand has 252 places, 238 transitions, 747 flow. Second operand 28 states and 4397 transitions. [2022-07-22 21:45:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 657 transitions, 3731 flow [2022-07-22 21:45:19,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 657 transitions, 3644 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-07-22 21:45:19,652 INFO L242 Difference]: Finished difference. Result has 285 places, 478 transitions, 2781 flow [2022-07-22 21:45:19,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2781, PETRI_PLACES=285, PETRI_TRANSITIONS=478} [2022-07-22 21:45:19,653 INFO L279 CegarLoopForPetriNet]: 224 programPoint places, 61 predicate places. [2022-07-22 21:45:19,653 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 478 transitions, 2781 flow [2022-07-22 21:45:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 145.0952380952381) internal successors, (6094), 42 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:19,655 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:45:19,655 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:45:19,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 21:45:19,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 21:45:19,872 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-22 21:45:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:45:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2032663489, now seen corresponding path program 2 times [2022-07-22 21:45:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:45:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102789737] [2022-07-22 21:45:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:45:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:45:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:45:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:45:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:45:20,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102789737] [2022-07-22 21:45:20,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102789737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:45:20,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53462961] [2022-07-22 21:45:20,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:45:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:45:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:45:20,328 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) [2022-07-22 21:45:20,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:45:20,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:45:20,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:45:20,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-22 21:45:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:45:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:45:21,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 21:45:21,534 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-07-22 21:45:21,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 10 [2022-07-22 21:45:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:45:21,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:45:21,832 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_552 (Array Int Int))) (<= c_~s_2~0 (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))))) (forall ((v_ArrVal_552 (Array Int Int))) (< (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (+ 1 c_~s_2~0)))) is different from false [2022-07-22 21:45:21,854 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_552 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ 1 c_~s_2~0))) (forall ((v_ArrVal_552 (Array Int Int))) (<= c_~s_2~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_552) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-07-22 21:45:22,205 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:45:22,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 95 treesize of output 66 [2022-07-22 21:45:22,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-07-22 21:45:22,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-07-22 21:45:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:45:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53462961] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:45:23,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:45:23,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 55 [2022-07-22 21:45:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933825008] [2022-07-22 21:45:23,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:45:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-22 21:45:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:45:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-22 21:45:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2558, Unknown=3, NotChecked=206, Total=2970 [2022-07-22 21:45:23,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 264 [2022-07-22 21:45:23,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 478 transitions, 2781 flow. Second operand has 55 states, 55 states have (on average 140.85454545454544) internal successors, (7747), 55 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:45:23,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:45:23,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 264 [2022-07-22 21:45:23,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand