./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc --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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:07:27,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:27,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:28,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:28,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:28,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:28,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:28,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:28,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:28,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:28,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:28,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:28,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:28,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:28,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:28,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:28,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:28,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:28,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:28,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:28,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:28,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:28,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:28,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:28,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:28,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:28,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:28,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:28,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:28,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:28,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:28,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:28,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:28,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:28,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:28,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:28,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:28,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:28,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:28,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:28,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:07:28,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:28,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:28,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:28,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:28,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:07:28,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:07:28,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:28,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:28,128 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:28,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:28,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:07:28,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:28,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:07:28,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:28,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:07:28,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:07:28,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:07:28,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:07:28,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:28,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:28,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:07:28,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:28,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:28,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:07:28,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:28,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:28,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:07:28,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:07:28,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:28,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:07:28,134 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:07:28,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:07:28,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:07:28,135 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-11-02 20:07:28,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:28,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:28,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:28,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:28,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:28,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-02 20:07:28,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/data/f09115fce/9dcedcc95efa4e099b1dd6c49d56a3a7/FLAGc548431ec [2022-11-02 20:07:29,219 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:29,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-02 20:07:29,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/data/f09115fce/9dcedcc95efa4e099b1dd6c49d56a3a7/FLAGc548431ec [2022-11-02 20:07:29,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/data/f09115fce/9dcedcc95efa4e099b1dd6c49d56a3a7 [2022-11-02 20:07:29,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:29,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:29,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:29,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:29,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:29,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:29,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9361ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29, skipping insertion in model container [2022-11-02 20:07:29,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:29,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:29,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:29,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-02 20:07:29,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:29,866 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:29,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-02 20:07:29,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:29,938 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:29,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29 WrapperNode [2022-11-02 20:07:29,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:29,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:29,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:29,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:29,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:29,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,005 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-02 20:07:30,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:30,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:30,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:30,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:30,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:30,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:30,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:30,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:30,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (1/1) ... [2022-11-02 20:07:30,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:30,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:30,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:30,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:07:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:07:30,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:07:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:07:30,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:07:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:30,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:07:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:07:30,191 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:07:30,339 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:30,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:30,611 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:30,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:30,665 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:07:30,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30 BoogieIcfgContainer [2022-11-02 20:07:30,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:30,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:07:30,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:07:30,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:07:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:07:29" (1/3) ... [2022-11-02 20:07:30,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c86650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:30, skipping insertion in model container [2022-11-02 20:07:30,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:29" (2/3) ... [2022-11-02 20:07:30,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c86650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:30, skipping insertion in model container [2022-11-02 20:07:30,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30" (3/3) ... [2022-11-02 20:07:30,687 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-11-02 20:07:30,702 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:07:30,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:07:30,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:07:30,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:07:30,829 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:07:30,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-11-02 20:07:30,946 INFO L130 PetriNetUnfolder]: 11/93 cut-off events. [2022-11-02 20:07:30,946 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:07:30,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-02 20:07:30,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2022-11-02 20:07:30,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-11-02 20:07:30,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:07:30,986 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64e01c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:07:30,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:07:31,020 INFO L130 PetriNetUnfolder]: 11/83 cut-off events. [2022-11-02 20:07:31,021 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:07:31,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:31,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:31,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash 395361449, now seen corresponding path program 1 times [2022-11-02 20:07:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:31,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127456530] [2022-11-02 20:07:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:31,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:31,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:31,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127456530] [2022-11-02 20:07:31,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127456530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:31,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:31,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:07:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609135140] [2022-11-02 20:07:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:07:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:07:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:07:31,467 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 95 [2022-11-02 20:07:31,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:31,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 95 [2022-11-02 20:07:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:31,558 INFO L130 PetriNetUnfolder]: 13/92 cut-off events. [2022-11-02 20:07:31,564 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-02 20:07:31,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 92 events. 13/92 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 123 event pairs, 1 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2022-11-02 20:07:31,568 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 6 selfloop transitions, 0 changer transitions 1/81 dead transitions. [2022-11-02 20:07:31,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 186 flow [2022-11-02 20:07:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:07:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:07:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 179 transitions. [2022-11-02 20:07:31,582 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9421052631578948 [2022-11-02 20:07:31,583 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 179 transitions. [2022-11-02 20:07:31,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 179 transitions. [2022-11-02 20:07:31,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:31,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 179 transitions. [2022-11-02 20:07:31,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,596 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,599 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 180 flow. Second operand 2 states and 179 transitions. [2022-11-02 20:07:31,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 186 flow [2022-11-02 20:07:31,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:07:31,608 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 164 flow [2022-11-02 20:07:31,611 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2022-11-02 20:07:31,615 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, -3 predicate places. [2022-11-02 20:07:31,616 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 164 flow [2022-11-02 20:07:31,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:31,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:07:31,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 524444168, now seen corresponding path program 1 times [2022-11-02 20:07:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439170573] [2022-11-02 20:07:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439170573] [2022-11-02 20:07:31,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439170573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:31,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:31,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:31,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436453643] [2022-11-02 20:07:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:31,896 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-11-02 20:07:31,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:31,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-11-02 20:07:31,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:32,031 INFO L130 PetriNetUnfolder]: 24/128 cut-off events. [2022-11-02 20:07:32,037 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:07:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 128 events. 24/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 273 event pairs, 2 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 166. Up to 20 conditions per place. [2022-11-02 20:07:32,042 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-11-02 20:07:32,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 207 flow [2022-11-02 20:07:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-11-02 20:07:32,054 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-11-02 20:07:32,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:32,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,062 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 164 flow. Second operand 3 states and 257 transitions. [2022-11-02 20:07:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 207 flow [2022-11-02 20:07:32,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:07:32,066 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 176 flow [2022-11-02 20:07:32,067 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-11-02 20:07:32,068 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-11-02 20:07:32,068 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 176 flow [2022-11-02 20:07:32,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:32,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:32,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:07:32,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2083579674, now seen corresponding path program 1 times [2022-11-02 20:07:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923413391] [2022-11-02 20:07:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:07:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:32,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923413391] [2022-11-02 20:07:32,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923413391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:32,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:32,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311927547] [2022-11-02 20:07:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:32,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-11-02 20:07:32,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:32,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-11-02 20:07:32,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:32,394 INFO L130 PetriNetUnfolder]: 64/241 cut-off events. [2022-11-02 20:07:32,394 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:07:32,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 241 events. 64/241 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 743 event pairs, 5 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 310. Up to 34 conditions per place. [2022-11-02 20:07:32,399 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-11-02 20:07:32,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 219 flow [2022-11-02 20:07:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-11-02 20:07:32,402 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-11-02 20:07:32,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:32,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-11-02 20:07:32,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,407 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 176 flow. Second operand 3 states and 257 transitions. [2022-11-02 20:07:32,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 219 flow [2022-11-02 20:07:32,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:32,412 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 186 flow [2022-11-02 20:07:32,412 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2022-11-02 20:07:32,413 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 1 predicate places. [2022-11-02 20:07:32,414 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 186 flow [2022-11-02 20:07:32,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:32,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:32,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:07:32,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1003385844, now seen corresponding path program 1 times [2022-11-02 20:07:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502729772] [2022-11-02 20:07:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:07:32,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502729772] [2022-11-02 20:07:32,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502729772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:32,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:32,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871361181] [2022-11-02 20:07:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:32,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:32,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-11-02 20:07:32,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:32,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-11-02 20:07:32,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:32,733 INFO L130 PetriNetUnfolder]: 41/187 cut-off events. [2022-11-02 20:07:32,734 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:07:32,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 187 events. 41/187 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 624 event pairs, 12 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 271. Up to 45 conditions per place. [2022-11-02 20:07:32,737 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 15 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-11-02 20:07:32,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 229 flow [2022-11-02 20:07:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2022-11-02 20:07:32,741 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2022-11-02 20:07:32,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2022-11-02 20:07:32,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2022-11-02 20:07:32,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:32,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2022-11-02 20:07:32,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,747 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 186 flow. Second operand 3 states and 252 transitions. [2022-11-02 20:07:32,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 229 flow [2022-11-02 20:07:32,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:32,751 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 196 flow [2022-11-02 20:07:32,752 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2022-11-02 20:07:32,753 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 3 predicate places. [2022-11-02 20:07:32,753 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 196 flow [2022-11-02 20:07:32,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:32,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:32,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:07:32,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,757 INFO L85 PathProgramCache]: Analyzing trace with hash -479723240, now seen corresponding path program 1 times [2022-11-02 20:07:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:32,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125356954] [2022-11-02 20:07:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:07:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:33,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125356954] [2022-11-02 20:07:33,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125356954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473480500] [2022-11-02 20:07:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:33,029 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-11-02 20:07:33,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:33,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-11-02 20:07:33,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:33,170 INFO L130 PetriNetUnfolder]: 38/218 cut-off events. [2022-11-02 20:07:33,170 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:07:33,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 218 events. 38/218 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 803 event pairs, 9 based on Foata normal form. 8/207 useless extension candidates. Maximal degree in co-relation 335. Up to 35 conditions per place. [2022-11-02 20:07:33,174 INFO L137 encePairwiseOnDemand]: 88/95 looper letters, 13 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2022-11-02 20:07:33,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 245 flow [2022-11-02 20:07:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:07:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:07:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2022-11-02 20:07:33,177 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2022-11-02 20:07:33,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2022-11-02 20:07:33,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2022-11-02 20:07:33,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:33,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2022-11-02 20:07:33,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,184 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 196 flow. Second operand 4 states and 333 transitions. [2022-11-02 20:07:33,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 245 flow [2022-11-02 20:07:33,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:33,191 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 225 flow [2022-11-02 20:07:33,192 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2022-11-02 20:07:33,197 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2022-11-02 20:07:33,197 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 225 flow [2022-11-02 20:07:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:33,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:07:33,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1643437093, now seen corresponding path program 1 times [2022-11-02 20:07:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637519567] [2022-11-02 20:07:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:07:33,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:33,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637519567] [2022-11-02 20:07:33,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637519567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:33,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369929641] [2022-11-02 20:07:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:33,463 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-11-02 20:07:33,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:33,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-11-02 20:07:33,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:33,630 INFO L130 PetriNetUnfolder]: 140/500 cut-off events. [2022-11-02 20:07:33,631 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-02 20:07:33,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 500 events. 140/500 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2719 event pairs, 12 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 814. Up to 155 conditions per place. [2022-11-02 20:07:33,639 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 16 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-11-02 20:07:33,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 272 flow [2022-11-02 20:07:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-11-02 20:07:33,642 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.887719298245614 [2022-11-02 20:07:33,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-11-02 20:07:33,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-11-02 20:07:33,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:33,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-11-02 20:07:33,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,647 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 225 flow. Second operand 3 states and 253 transitions. [2022-11-02 20:07:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 272 flow [2022-11-02 20:07:33,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 267 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:33,655 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 232 flow [2022-11-02 20:07:33,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2022-11-02 20:07:33,659 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 9 predicate places. [2022-11-02 20:07:33,659 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 232 flow [2022-11-02 20:07:33,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:33,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:07:33,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 32834629, now seen corresponding path program 1 times [2022-11-02 20:07:33,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843154293] [2022-11-02 20:07:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:07:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843154293] [2022-11-02 20:07:33,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843154293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242856310] [2022-11-02 20:07:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:33,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-11-02 20:07:33,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:33,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-11-02 20:07:33,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:34,225 INFO L130 PetriNetUnfolder]: 132/632 cut-off events. [2022-11-02 20:07:34,226 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-02 20:07:34,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 632 events. 132/632 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3800 event pairs, 54 based on Foata normal form. 32/614 useless extension candidates. Maximal degree in co-relation 1071. Up to 127 conditions per place. [2022-11-02 20:07:34,233 INFO L137 encePairwiseOnDemand]: 88/95 looper letters, 14 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2022-11-02 20:07:34,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 284 flow [2022-11-02 20:07:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:07:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:07:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2022-11-02 20:07:34,236 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8789473684210526 [2022-11-02 20:07:34,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2022-11-02 20:07:34,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2022-11-02 20:07:34,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:34,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2022-11-02 20:07:34,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,242 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 232 flow. Second operand 4 states and 334 transitions. [2022-11-02 20:07:34,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 284 flow [2022-11-02 20:07:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:34,252 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 261 flow [2022-11-02 20:07:34,253 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2022-11-02 20:07:34,254 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 13 predicate places. [2022-11-02 20:07:34,255 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 261 flow [2022-11-02 20:07:34,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:34,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:34,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:07:34,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1337733893, now seen corresponding path program 1 times [2022-11-02 20:07:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:34,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365494347] [2022-11-02 20:07:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:34,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365494347] [2022-11-02 20:07:34,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365494347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:34,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360319588] [2022-11-02 20:07:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:34,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:07:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:35,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:35,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360319588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:35,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:07:35,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-11-02 20:07:35,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118282344] [2022-11-02 20:07:35,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:35,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:07:35,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:07:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:07:35,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-11-02 20:07:35,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:35,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-11-02 20:07:35,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:35,726 INFO L130 PetriNetUnfolder]: 99/715 cut-off events. [2022-11-02 20:07:35,727 INFO L131 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2022-11-02 20:07:35,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 715 events. 99/715 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4429 event pairs, 16 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 1256. Up to 100 conditions per place. [2022-11-02 20:07:35,737 INFO L137 encePairwiseOnDemand]: 87/95 looper letters, 26 selfloop transitions, 7 changer transitions 4/110 dead transitions. [2022-11-02 20:07:35,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 110 transitions, 390 flow [2022-11-02 20:07:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:07:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-11-02 20:07:35,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-11-02 20:07:35,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-11-02 20:07:35,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-11-02 20:07:35,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:35,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-11-02 20:07:35,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,746 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 261 flow. Second operand 7 states and 577 transitions. [2022-11-02 20:07:35,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 110 transitions, 390 flow [2022-11-02 20:07:35,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 385 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:07:35,752 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 307 flow [2022-11-02 20:07:35,753 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2022-11-02 20:07:35,754 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 23 predicate places. [2022-11-02 20:07:35,754 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 307 flow [2022-11-02 20:07:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:35,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:35,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:35,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1787245407, now seen corresponding path program 2 times [2022-11-02 20:07:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:35,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751869871] [2022-11-02 20:07:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751869871] [2022-11-02 20:07:36,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751869871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:36,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019304761] [2022-11-02 20:07:36,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:07:36,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:36,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:36,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:36,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:07:36,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:07:36,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:07:36,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:07:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:36,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:07:36,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019304761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:36,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:07:36,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-11-02 20:07:36,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037968247] [2022-11-02 20:07:36,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:36,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:07:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:07:36,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:07:36,920 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-11-02 20:07:36,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:36,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:36,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-11-02 20:07:36,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:37,285 INFO L130 PetriNetUnfolder]: 132/958 cut-off events. [2022-11-02 20:07:37,286 INFO L131 PetriNetUnfolder]: For 437/451 co-relation queries the response was YES. [2022-11-02 20:07:37,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 958 events. 132/958 cut-off events. For 437/451 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6811 event pairs, 14 based on Foata normal form. 5/909 useless extension candidates. Maximal degree in co-relation 1892. Up to 160 conditions per place. [2022-11-02 20:07:37,296 INFO L137 encePairwiseOnDemand]: 87/95 looper letters, 32 selfloop transitions, 11 changer transitions 4/120 dead transitions. [2022-11-02 20:07:37,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 120 transitions, 507 flow [2022-11-02 20:07:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:07:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-11-02 20:07:37,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-11-02 20:07:37,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-11-02 20:07:37,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-11-02 20:07:37,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:37,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-11-02 20:07:37,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,306 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 307 flow. Second operand 7 states and 577 transitions. [2022-11-02 20:07:37,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 120 transitions, 507 flow [2022-11-02 20:07:37,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 493 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-02 20:07:37,312 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 412 flow [2022-11-02 20:07:37,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2022-11-02 20:07:37,313 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 30 predicate places. [2022-11-02 20:07:37,313 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 412 flow [2022-11-02 20:07:37,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:37,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:37,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:37,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:37,541 INFO L85 PathProgramCache]: Analyzing trace with hash -596172903, now seen corresponding path program 3 times [2022-11-02 20:07:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:37,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053712664] [2022-11-02 20:07:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:37,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053712664] [2022-11-02 20:07:37,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053712664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:37,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118192693] [2022-11-02 20:07:37,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:07:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:37,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:37,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:07:38,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:07:38,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:07:38,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:07:38,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:38,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:38,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118192693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:38,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:07:38,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-02 20:07:38,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439723775] [2022-11-02 20:07:38,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:38,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:07:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:07:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:07:38,513 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-11-02 20:07:38,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 412 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:38,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:38,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-11-02 20:07:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:38,873 INFO L130 PetriNetUnfolder]: 132/943 cut-off events. [2022-11-02 20:07:38,873 INFO L131 PetriNetUnfolder]: For 840/879 co-relation queries the response was YES. [2022-11-02 20:07:38,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 943 events. 132/943 cut-off events. For 840/879 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6703 event pairs, 7 based on Foata normal form. 37/930 useless extension candidates. Maximal degree in co-relation 2061. Up to 86 conditions per place. [2022-11-02 20:07:38,886 INFO L137 encePairwiseOnDemand]: 87/95 looper letters, 22 selfloop transitions, 25 changer transitions 4/124 dead transitions. [2022-11-02 20:07:38,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 124 transitions, 603 flow [2022-11-02 20:07:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:07:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:07:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 652 transitions. [2022-11-02 20:07:38,889 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8578947368421053 [2022-11-02 20:07:38,890 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 652 transitions. [2022-11-02 20:07:38,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 652 transitions. [2022-11-02 20:07:38,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:38,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 652 transitions. [2022-11-02 20:07:38,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:38,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:38,896 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:38,896 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 412 flow. Second operand 8 states and 652 transitions. [2022-11-02 20:07:38,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 124 transitions, 603 flow [2022-11-02 20:07:38,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 585 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-11-02 20:07:38,904 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 499 flow [2022-11-02 20:07:38,905 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2022-11-02 20:07:38,906 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 36 predicate places. [2022-11-02 20:07:38,906 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 499 flow [2022-11-02 20:07:38,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:38,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:38,907 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-11-02 20:07:38,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:07:39,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -982729314, now seen corresponding path program 4 times [2022-11-02 20:07:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:39,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986523712] [2022-11-02 20:07:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:07:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:39,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986523712] [2022-11-02 20:07:39,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986523712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:39,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:39,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717369008] [2022-11-02 20:07:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:39,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:39,192 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-11-02 20:07:39,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:39,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-11-02 20:07:39,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:39,387 INFO L130 PetriNetUnfolder]: 109/742 cut-off events. [2022-11-02 20:07:39,387 INFO L131 PetriNetUnfolder]: For 1022/1100 co-relation queries the response was YES. [2022-11-02 20:07:39,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 742 events. 109/742 cut-off events. For 1022/1100 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4818 event pairs, 10 based on Foata normal form. 28/727 useless extension candidates. Maximal degree in co-relation 1781. Up to 113 conditions per place. [2022-11-02 20:07:39,399 INFO L137 encePairwiseOnDemand]: 91/95 looper letters, 20 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-11-02 20:07:39,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 552 flow [2022-11-02 20:07:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-11-02 20:07:39,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8912280701754386 [2022-11-02 20:07:39,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-11-02 20:07:39,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-11-02 20:07:39,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:39,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-11-02 20:07:39,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,405 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 499 flow. Second operand 3 states and 254 transitions. [2022-11-02 20:07:39,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 552 flow [2022-11-02 20:07:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 531 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-02 20:07:39,414 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 500 flow [2022-11-02 20:07:39,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-11-02 20:07:39,416 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 34 predicate places. [2022-11-02 20:07:39,416 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 500 flow [2022-11-02 20:07:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:07:39,417 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-11-02 20:07:39,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:07:39,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:07:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -403236715, now seen corresponding path program 5 times [2022-11-02 20:07:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:39,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932844056] [2022-11-02 20:07:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:39,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:07:39,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:39,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932844056] [2022-11-02 20:07:39,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932844056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:39,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:39,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:07:39,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107767928] [2022-11-02 20:07:39,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:39,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:07:39,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:39,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:07:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:07:39,488 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-11-02 20:07:39,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:07:39,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-11-02 20:07:39,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:07:39,760 INFO L130 PetriNetUnfolder]: 224/1049 cut-off events. [2022-11-02 20:07:39,760 INFO L131 PetriNetUnfolder]: For 1724/1742 co-relation queries the response was YES. [2022-11-02 20:07:39,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1049 events. 224/1049 cut-off events. For 1724/1742 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7618 event pairs, 41 based on Foata normal form. 37/1011 useless extension candidates. Maximal degree in co-relation 2775. Up to 227 conditions per place. [2022-11-02 20:07:39,771 INFO L137 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2022-11-02 20:07:39,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 609 flow [2022-11-02 20:07:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:07:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:07:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2022-11-02 20:07:39,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2022-11-02 20:07:39,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2022-11-02 20:07:39,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2022-11-02 20:07:39,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:07:39,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2022-11-02 20:07:39,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,777 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 500 flow. Second operand 3 states and 256 transitions. [2022-11-02 20:07:39,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 609 flow [2022-11-02 20:07:39,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 576 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:07:39,787 INFO L231 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2022-11-02 20:07:39,787 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2022-11-02 20:07:39,788 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 27 predicate places. [2022-11-02 20:07:39,788 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2022-11-02 20:07:39,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-02 20:07:39,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-02 20:07:39,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-02 20:07:39,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:07:39,794 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:39,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:07:39,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:07:39,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:07:39 BasicIcfg [2022-11-02 20:07:39,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:07:39,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:07:39,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:07:39,806 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:07:39,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:30" (3/4) ... [2022-11-02 20:07:39,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:07:39,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:07:39,819 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:07:39,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-02 20:07:39,825 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:07:39,825 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:07:39,825 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:07:39,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:07:39,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:07:39,866 INFO L158 Benchmark]: Toolchain (without parser) took 10354.73ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 70.4MB in the beginning and 104.9MB in the end (delta: -34.5MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,866 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:39,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.47ms. Allocated memory is still 104.9MB. Free memory was 70.2MB in the beginning and 79.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.31ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,868 INFO L158 Benchmark]: Boogie Preprocessor took 64.55ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:39,868 INFO L158 Benchmark]: RCFGBuilder took 599.19ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 62.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,869 INFO L158 Benchmark]: TraceAbstraction took 9131.49ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 61.8MB in the beginning and 108.0MB in the end (delta: -46.2MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,869 INFO L158 Benchmark]: Witness Printer took 59.57ms. Allocated memory is still 161.5MB. Free memory was 108.0MB in the beginning and 104.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:07:39,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.47ms. Allocated memory is still 104.9MB. Free memory was 70.2MB in the beginning and 79.6MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.31ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.55ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 599.19ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 62.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9131.49ms. Allocated memory was 104.9MB in the beginning and 161.5MB in the end (delta: 56.6MB). Free memory was 61.8MB in the beginning and 108.0MB in the end (delta: -46.2MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. * Witness Printer took 59.57ms. Allocated memory is still 161.5MB. Free memory was 108.0MB in the beginning and 104.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 281 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 567 IncrementalHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 63 mSDtfsCounter, 567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 485 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=11, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1110 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1332 ConstructedInterpolants, 0 QuantifiedInterpolants, 3925 SizeOfPredicates, 6 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 75/171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:07:39,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f829d8-6ba7-431a-942a-47bafbb35a01/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE