./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0 --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 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:59:09,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:59:09,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:59:09,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:59:09,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:59:09,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:59:09,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:59:09,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:59:09,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:59:10,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:59:10,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:59:10,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:59:10,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:59:10,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:59:10,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:59:10,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:59:10,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:59:10,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:59:10,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:59:10,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:59:10,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:59:10,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:59:10,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:59:10,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:59:10,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:59:10,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:59:10,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:59:10,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:59:10,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:59:10,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:59:10,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:59:10,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:59:10,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:59:10,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:59:10,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:59:10,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:59:10,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:59:10,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:59:10,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:59:10,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:59:10,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:59:10,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:59:10,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:59:10,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:59:10,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:59:10,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:59:10,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:59:10,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:59:10,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:59:10,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:59:10,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:59:10,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:59:10,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:59:10,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:59:10,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:59:10,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:59:10,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:59:10,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:59:10,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:59:10,096 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:59:10,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:59:10,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:59:10,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:59:10,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:59:10,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:59:10,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:59:10,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:59:10,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:59:10,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:59:10,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:59:10,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:59:10,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:59:10,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:59:10,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:59:10,102 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_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca [2021-11-22 14:59:10,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:59:10,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:59:10,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:59:10,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:59:10,472 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:59:10,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2021-11-22 14:59:10,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/data/4afafa153/72d07a722baf45e1b4f3ba26aa7e077e/FLAGb2789601a [2021-11-22 14:59:11,128 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:59:11,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2021-11-22 14:59:11,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/data/4afafa153/72d07a722baf45e1b4f3ba26aa7e077e/FLAGb2789601a [2021-11-22 14:59:11,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/data/4afafa153/72d07a722baf45e1b4f3ba26aa7e077e [2021-11-22 14:59:11,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:59:11,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:59:11,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:59:11,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:59:11,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:59:11,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7945d542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11, skipping insertion in model container [2021-11-22 14:59:11,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:59:11,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:59:11,739 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_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2021-11-22 14:59:11,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:59:11,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:59:11,789 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_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2021-11-22 14:59:11,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:59:11,810 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:59:11,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11 WrapperNode [2021-11-22 14:59:11,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:59:11,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:59:11,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:59:11,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:59:11,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,868 INFO L137 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2021-11-22 14:59:11,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:59:11,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:59:11,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:59:11,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:59:11,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:59:11,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:59:11,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:59:11,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:59:11,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (1/1) ... [2021-11-22 14:59:11,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:59:11,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:11,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:11,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:59:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:59:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:59:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:59:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:59:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-22 14:59:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-22 14:59:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-22 14:59:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-22 14:59:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-22 14:59:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-22 14:59:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-22 14:59:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-22 14:59:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:59:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-22 14:59:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-22 14:59:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:59:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:59:12,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:59:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:59:12,019 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-22 14:59:12,120 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:59:12,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:59:12,600 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:59:12,712 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:59:12,712 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 14:59:12,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:59:12 BoogieIcfgContainer [2021-11-22 14:59:12,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:59:12,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:59:12,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:59:12,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:59:12,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:59:11" (1/3) ... [2021-11-22 14:59:12,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab8554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:59:12, skipping insertion in model container [2021-11-22 14:59:12,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:11" (2/3) ... [2021-11-22 14:59:12,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aab8554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:59:12, skipping insertion in model container [2021-11-22 14:59:12,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:59:12" (3/3) ... [2021-11-22 14:59:12,733 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2021-11-22 14:59:12,744 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-22 14:59:12,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:59:12,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:59:12,745 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-22 14:59:12,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,818 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,818 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,818 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,823 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,825 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,826 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,827 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,827 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,827 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,827 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,828 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,828 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,831 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,831 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,832 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,832 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,832 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,833 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,833 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,833 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,835 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,836 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,839 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,841 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,842 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,842 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,844 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,845 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,846 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,847 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,848 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,850 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,851 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,852 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,854 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,856 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,856 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,859 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,860 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,861 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,862 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,863 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,863 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,863 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,864 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,872 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,875 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,875 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,876 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,881 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,882 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,883 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-22 14:59:12,893 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-22 14:59:12,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:59:12,995 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:59:12,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 14:59:13,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 173 places, 172 transitions, 376 flow [2021-11-22 14:59:13,126 INFO L129 PetriNetUnfolder]: 12/168 cut-off events. [2021-11-22 14:59:13,126 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-22 14:59:13,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 12/168 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2021-11-22 14:59:13,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 172 transitions, 376 flow [2021-11-22 14:59:13,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 155 transitions, 334 flow [2021-11-22 14:59:13,217 INFO L129 PetriNetUnfolder]: 12/154 cut-off events. [2021-11-22 14:59:13,217 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-22 14:59:13,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:13,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:13,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 704747562, now seen corresponding path program 1 times [2021-11-22 14:59:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:13,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788967137] [2021-11-22 14:59:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:13,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:13,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:13,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788967137] [2021-11-22 14:59:13,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788967137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:13,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:13,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:59:13,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470997558] [2021-11-22 14:59:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:13,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:59:13,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:59:13,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:59:13,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 172 [2021-11-22 14:59:13,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 334 flow. Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:13,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:13,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 172 [2021-11-22 14:59:13,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:13,808 INFO L129 PetriNetUnfolder]: 105/512 cut-off events. [2021-11-22 14:59:13,808 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-11-22 14:59:13,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 512 events. 105/512 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2320 event pairs, 71 based on Foata normal form. 67/516 useless extension candidates. Maximal degree in co-relation 583. Up to 144 conditions per place. [2021-11-22 14:59:13,823 INFO L132 encePairwiseOnDemand]: 164/172 looper letters, 13 selfloop transitions, 0 changer transitions 4/147 dead transitions. [2021-11-22 14:59:13,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 344 flow [2021-11-22 14:59:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:59:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-22 14:59:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2021-11-22 14:59:13,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9331395348837209 [2021-11-22 14:59:13,851 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2021-11-22 14:59:13,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2021-11-22 14:59:13,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:13,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2021-11-22 14:59:13,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:13,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:13,881 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:13,883 INFO L186 Difference]: Start difference. First operand has 156 places, 155 transitions, 334 flow. Second operand 2 states and 321 transitions. [2021-11-22 14:59:13,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 147 transitions, 344 flow [2021-11-22 14:59:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 328 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-22 14:59:13,897 INFO L242 Difference]: Finished difference. Result has 149 places, 143 transitions, 294 flow [2021-11-22 14:59:13,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=294, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2021-11-22 14:59:13,907 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, -7 predicate places. [2021-11-22 14:59:13,907 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 294 flow [2021-11-22 14:59:13,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:13,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:13,908 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:13,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:59:13,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1218906496, now seen corresponding path program 1 times [2021-11-22 14:59:13,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:13,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599916061] [2021-11-22 14:59:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:13,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:14,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599916061] [2021-11-22 14:59:14,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599916061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:14,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:14,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:59:14,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676320036] [2021-11-22 14:59:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:14,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:59:14,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:59:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:59:14,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 172 [2021-11-22 14:59:14,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:14,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:14,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 172 [2021-11-22 14:59:14,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:15,353 INFO L129 PetriNetUnfolder]: 1341/2498 cut-off events. [2021-11-22 14:59:15,354 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-11-22 14:59:15,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2498 events. 1341/2498 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16307 event pairs, 633 based on Foata normal form. 0/2025 useless extension candidates. Maximal degree in co-relation 4649. Up to 1227 conditions per place. [2021-11-22 14:59:15,396 INFO L132 encePairwiseOnDemand]: 166/172 looper letters, 50 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2021-11-22 14:59:15,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 157 transitions, 435 flow [2021-11-22 14:59:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:59:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-22 14:59:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 764 transitions. [2021-11-22 14:59:15,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7403100775193798 [2021-11-22 14:59:15,402 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 764 transitions. [2021-11-22 14:59:15,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 764 transitions. [2021-11-22 14:59:15,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:15,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 764 transitions. [2021-11-22 14:59:15,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:15,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:15,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:15,412 INFO L186 Difference]: Start difference. First operand has 149 places, 143 transitions, 294 flow. Second operand 6 states and 764 transitions. [2021-11-22 14:59:15,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 157 transitions, 435 flow [2021-11-22 14:59:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-22 14:59:15,420 INFO L242 Difference]: Finished difference. Result has 151 places, 144 transitions, 312 flow [2021-11-22 14:59:15,421 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2021-11-22 14:59:15,422 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, -5 predicate places. [2021-11-22 14:59:15,422 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 312 flow [2021-11-22 14:59:15,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:15,423 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:15,424 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:15,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:59:15,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash -474365761, now seen corresponding path program 1 times [2021-11-22 14:59:15,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:15,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439463693] [2021-11-22 14:59:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:15,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:15,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439463693] [2021-11-22 14:59:15,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439463693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:15,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:15,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:59:15,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751736620] [2021-11-22 14:59:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:15,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:59:15,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:15,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:59:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:59:15,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2021-11-22 14:59:15,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:15,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:15,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2021-11-22 14:59:15,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:16,589 INFO L129 PetriNetUnfolder]: 1707/3469 cut-off events. [2021-11-22 14:59:16,590 INFO L130 PetriNetUnfolder]: For 414/414 co-relation queries the response was YES. [2021-11-22 14:59:16,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 3469 events. 1707/3469 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24812 event pairs, 1140 based on Foata normal form. 46/2928 useless extension candidates. Maximal degree in co-relation 6468. Up to 1917 conditions per place. [2021-11-22 14:59:16,644 INFO L132 encePairwiseOnDemand]: 163/172 looper letters, 36 selfloop transitions, 6 changer transitions 24/172 dead transitions. [2021-11-22 14:59:16,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 172 transitions, 510 flow [2021-11-22 14:59:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:59:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-22 14:59:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2021-11-22 14:59:16,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7805232558139535 [2021-11-22 14:59:16,650 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2021-11-22 14:59:16,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2021-11-22 14:59:16,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:16,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2021-11-22 14:59:16,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:16,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:16,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 172.0) internal successors, (1548), 9 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:16,665 INFO L186 Difference]: Start difference. First operand has 151 places, 144 transitions, 312 flow. Second operand 8 states and 1074 transitions. [2021-11-22 14:59:16,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 172 transitions, 510 flow [2021-11-22 14:59:16,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 172 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-22 14:59:16,675 INFO L242 Difference]: Finished difference. Result has 157 places, 145 transitions, 328 flow [2021-11-22 14:59:16,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2021-11-22 14:59:16,677 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2021-11-22 14:59:16,678 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 328 flow [2021-11-22 14:59:16,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:16,679 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:16,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:16,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:59:16,680 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 744951810, now seen corresponding path program 1 times [2021-11-22 14:59:16,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:16,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072552897] [2021-11-22 14:59:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:16,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:16,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:16,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072552897] [2021-11-22 14:59:16,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072552897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:16,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339001817] [2021-11-22 14:59:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:16,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:16,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:16,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:16,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:59:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:59:17,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:17,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:18,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339001817] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:18,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:59:18,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-22 14:59:18,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634524537] [2021-11-22 14:59:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:18,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:59:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:59:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:59:18,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2021-11-22 14:59:18,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:18,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:18,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2021-11-22 14:59:18,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:18,693 INFO L129 PetriNetUnfolder]: 1362/2463 cut-off events. [2021-11-22 14:59:18,694 INFO L130 PetriNetUnfolder]: For 270/331 co-relation queries the response was YES. [2021-11-22 14:59:18,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 2463 events. 1362/2463 cut-off events. For 270/331 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15598 event pairs, 495 based on Foata normal form. 61/2136 useless extension candidates. Maximal degree in co-relation 4925. Up to 1007 conditions per place. [2021-11-22 14:59:18,734 INFO L132 encePairwiseOnDemand]: 164/172 looper letters, 43 selfloop transitions, 7 changer transitions 0/157 dead transitions. [2021-11-22 14:59:18,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 459 flow [2021-11-22 14:59:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:59:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-22 14:59:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 932 transitions. [2021-11-22 14:59:18,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7740863787375415 [2021-11-22 14:59:18,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 932 transitions. [2021-11-22 14:59:18,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 932 transitions. [2021-11-22 14:59:18,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:18,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 932 transitions. [2021-11-22 14:59:18,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:18,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:18,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:18,754 INFO L186 Difference]: Start difference. First operand has 157 places, 145 transitions, 328 flow. Second operand 7 states and 932 transitions. [2021-11-22 14:59:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 459 flow [2021-11-22 14:59:18,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 443 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-11-22 14:59:18,762 INFO L242 Difference]: Finished difference. Result has 158 places, 147 transitions, 347 flow [2021-11-22 14:59:18,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2021-11-22 14:59:18,765 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 2 predicate places. [2021-11-22 14:59:18,765 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 347 flow [2021-11-22 14:59:18,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:18,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:18,766 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:18,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:18,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:18,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:18,996 INFO L85 PathProgramCache]: Analyzing trace with hash 169688933, now seen corresponding path program 1 times [2021-11-22 14:59:18,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:18,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424004419] [2021-11-22 14:59:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:18,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:19,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424004419] [2021-11-22 14:59:19,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424004419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491597543] [2021-11-22 14:59:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:19,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:19,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:59:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:19,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:59:19,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:19,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:20,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491597543] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:20,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:59:20,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-11-22 14:59:20,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327299815] [2021-11-22 14:59:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:20,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:59:20,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:59:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:59:20,074 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2021-11-22 14:59:20,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:20,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:20,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2021-11-22 14:59:20,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:20,684 INFO L129 PetriNetUnfolder]: 1309/2408 cut-off events. [2021-11-22 14:59:20,684 INFO L130 PetriNetUnfolder]: For 696/973 co-relation queries the response was YES. [2021-11-22 14:59:20,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5238 conditions, 2408 events. 1309/2408 cut-off events. For 696/973 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15209 event pairs, 472 based on Foata normal form. 277/2523 useless extension candidates. Maximal degree in co-relation 5229. Up to 1084 conditions per place. [2021-11-22 14:59:20,727 INFO L132 encePairwiseOnDemand]: 164/172 looper letters, 46 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2021-11-22 14:59:20,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 160 transitions, 492 flow [2021-11-22 14:59:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:59:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-22 14:59:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2021-11-22 14:59:20,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7749169435215947 [2021-11-22 14:59:20,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2021-11-22 14:59:20,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2021-11-22 14:59:20,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:20,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2021-11-22 14:59:20,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:20,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:20,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:20,743 INFO L186 Difference]: Start difference. First operand has 158 places, 147 transitions, 347 flow. Second operand 7 states and 933 transitions. [2021-11-22 14:59:20,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 160 transitions, 492 flow [2021-11-22 14:59:20,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 160 transitions, 483 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-22 14:59:20,755 INFO L242 Difference]: Finished difference. Result has 162 places, 148 transitions, 366 flow [2021-11-22 14:59:20,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=162, PETRI_TRANSITIONS=148} [2021-11-22 14:59:20,759 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 6 predicate places. [2021-11-22 14:59:20,759 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 148 transitions, 366 flow [2021-11-22 14:59:20,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:20,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:20,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:20,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:20,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:20,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1362204798, now seen corresponding path program 1 times [2021-11-22 14:59:20,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:20,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306848780] [2021-11-22 14:59:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:20,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:59:21,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306848780] [2021-11-22 14:59:21,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306848780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316918533] [2021-11-22 14:59:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:21,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:21,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:21,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:21,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:59:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:21,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 14:59:21,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:21,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 14:59:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:22,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:22,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316918533] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:22,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:59:22,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 16] total 26 [2021-11-22 14:59:22,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703743655] [2021-11-22 14:59:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:22,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:59:22,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:59:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-22 14:59:22,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 172 [2021-11-22 14:59:22,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 148 transitions, 366 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:22,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:22,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 172 [2021-11-22 14:59:22,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:28,501 INFO L129 PetriNetUnfolder]: 14893/27107 cut-off events. [2021-11-22 14:59:28,502 INFO L130 PetriNetUnfolder]: For 8613/8613 co-relation queries the response was YES. [2021-11-22 14:59:28,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56963 conditions, 27107 events. 14893/27107 cut-off events. For 8613/8613 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 240964 event pairs, 1787 based on Foata normal form. 2/26697 useless extension candidates. Maximal degree in co-relation 56952. Up to 5946 conditions per place. [2021-11-22 14:59:28,920 INFO L132 encePairwiseOnDemand]: 158/172 looper letters, 228 selfloop transitions, 30 changer transitions 12/360 dead transitions. [2021-11-22 14:59:28,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 360 transitions, 1519 flow [2021-11-22 14:59:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:59:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-22 14:59:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1801 transitions. [2021-11-22 14:59:28,929 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6980620155038759 [2021-11-22 14:59:28,929 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1801 transitions. [2021-11-22 14:59:28,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1801 transitions. [2021-11-22 14:59:28,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:28,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1801 transitions. [2021-11-22 14:59:28,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 120.06666666666666) internal successors, (1801), 15 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:28,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:28,948 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:28,948 INFO L186 Difference]: Start difference. First operand has 162 places, 148 transitions, 366 flow. Second operand 15 states and 1801 transitions. [2021-11-22 14:59:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 360 transitions, 1519 flow [2021-11-22 14:59:29,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 360 transitions, 1509 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-22 14:59:29,211 INFO L242 Difference]: Finished difference. Result has 185 places, 180 transitions, 599 flow [2021-11-22 14:59:29,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=599, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2021-11-22 14:59:29,215 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 29 predicate places. [2021-11-22 14:59:29,215 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 599 flow [2021-11-22 14:59:29,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:29,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:29,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:29,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:29,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 14:59:29,439 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1073489436, now seen corresponding path program 2 times [2021-11-22 14:59:29,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:29,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682611463] [2021-11-22 14:59:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:29,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:59:29,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682611463] [2021-11-22 14:59:29,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682611463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280726824] [2021-11-22 14:59:29,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:59:29,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:29,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:29,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:29,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:59:29,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 14:59:29,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:59:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:59:29,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:59:30,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:59:30,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280726824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:59:30,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:59:30,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2021-11-22 14:59:30,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616272941] [2021-11-22 14:59:30,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:59:30,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:59:30,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:59:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:59:30,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 172 [2021-11-22 14:59:30,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:30,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:30,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 172 [2021-11-22 14:59:30,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-22 14:59:31,692 INFO L129 PetriNetUnfolder]: 1704/5285 cut-off events. [2021-11-22 14:59:31,692 INFO L130 PetriNetUnfolder]: For 5748/6415 co-relation queries the response was YES. [2021-11-22 14:59:31,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12776 conditions, 5285 events. 1704/5285 cut-off events. For 5748/6415 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 49426 event pairs, 332 based on Foata normal form. 69/5076 useless extension candidates. Maximal degree in co-relation 12752. Up to 1578 conditions per place. [2021-11-22 14:59:31,795 INFO L132 encePairwiseOnDemand]: 166/172 looper letters, 90 selfloop transitions, 6 changer transitions 7/233 dead transitions. [2021-11-22 14:59:31,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 233 transitions, 1070 flow [2021-11-22 14:59:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:59:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-22 14:59:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 939 transitions. [2021-11-22 14:59:31,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799003322259136 [2021-11-22 14:59:31,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 939 transitions. [2021-11-22 14:59:31,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 939 transitions. [2021-11-22 14:59:31,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:31,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 939 transitions. [2021-11-22 14:59:31,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:31,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:31,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:31,811 INFO L186 Difference]: Start difference. First operand has 185 places, 180 transitions, 599 flow. Second operand 7 states and 939 transitions. [2021-11-22 14:59:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 233 transitions, 1070 flow [2021-11-22 14:59:31,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 233 transitions, 1058 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-11-22 14:59:31,848 INFO L242 Difference]: Finished difference. Result has 187 places, 184 transitions, 643 flow [2021-11-22 14:59:31,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=187, PETRI_TRANSITIONS=184} [2021-11-22 14:59:31,849 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 31 predicate places. [2021-11-22 14:59:31,849 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 184 transitions, 643 flow [2021-11-22 14:59:31,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:31,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-22 14:59:31,851 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:31,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:32,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 14:59:32,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-22 14:59:32,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash -209564466, now seen corresponding path program 3 times [2021-11-22 14:59:32,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:32,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251325398] [2021-11-22 14:59:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:32,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 14:59:32,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251325398] [2021-11-22 14:59:32,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251325398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:32,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262402741] [2021-11-22 14:59:32,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:59:32,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:32,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:32,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:32,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbe3b20c-374f-47c4-ac22-add96cc6c6c1/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:59:32,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-22 14:59:32,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:59:32,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-22 14:59:32,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:33,380 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-22 14:59:33,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-11-22 14:59:33,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 14:59:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:33,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:59:39,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262402741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:59:39,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:59:39,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 11] total 28 [2021-11-22 14:59:39,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727208326] [2021-11-22 14:59:39,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:59:39,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 14:59:39,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 14:59:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=631, Unknown=1, NotChecked=0, Total=756 [2021-11-22 14:59:39,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2021-11-22 14:59:39,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 184 transitions, 643 flow. Second operand has 28 states, 28 states have (on average 92.57142857142857) internal successors, (2592), 28 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:39,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-22 14:59:39,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2021-11-22 14:59:39,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand