./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX --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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:57:21,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:57:21,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:57:21,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:57:21,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:57:21,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:57:21,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:57:21,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:57:21,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:57:21,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:57:21,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:57:21,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:57:21,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:57:21,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:57:21,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:57:21,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:57:21,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:57:21,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:57:21,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:57:21,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:57:21,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:57:21,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:57:21,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:57:21,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:57:21,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:57:21,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:57:21,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:57:21,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:57:21,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:57:21,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:57:21,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:57:21,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:57:21,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:57:21,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:57:21,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:57:21,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:57:21,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:57:21,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:57:21,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:57:21,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:57:21,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:57:21,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:57:21,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:57:21,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:57:21,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:57:21,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:57:21,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:57:21,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:57:21,146 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:57:21,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:57:21,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:57:21,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:57:21,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:57:21,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:57:21,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:57:21,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:57:21,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:57:21,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:57:21,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:57:21,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:57:21,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:57:21,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:57:21,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:57:21,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:57:21,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:21,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:57:21,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:57:21,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:57:21,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:57:21,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:57:21,154 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:57:21,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:57:21,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:57:21,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:57:21,155 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_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2021-11-09 08:57:21,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:57:21,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:57:21,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:57:21,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:57:21,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:57:21,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-09 08:57:21,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/data/5e61545f7/a7645583ca464cd6b9f8fd386f35c49e/FLAG883de160b [2021-11-09 08:57:22,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:57:22,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-09 08:57:22,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/data/5e61545f7/a7645583ca464cd6b9f8fd386f35c49e/FLAG883de160b [2021-11-09 08:57:22,423 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/data/5e61545f7/a7645583ca464cd6b9f8fd386f35c49e [2021-11-09 08:57:22,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:57:22,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:57:22,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:22,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:57:22,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:57:22,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f9346f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22, skipping insertion in model container [2021-11-09 08:57:22,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:57:22,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:57:22,711 WARN L228 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_32e29377-0032-4ecb-82a4-6c858410a226/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-09 08:57:22,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:22,727 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:57:22,758 WARN L228 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_32e29377-0032-4ecb-82a4-6c858410a226/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-09 08:57:22,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:22,777 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:57:22,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22 WrapperNode [2021-11-09 08:57:22,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:22,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:22,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:57:22,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:57:22,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:22,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:57:22,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:57:22,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:57:22,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:57:22,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:57:22,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:57:22,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:57:22,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (1/1) ... [2021-11-09 08:57:22,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:22,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:22,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:57:22,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:57:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-09 08:57:23,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-09 08:57:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-09 08:57:23,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-09 08:57:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-09 08:57:23,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:57:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:57:23,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:57:23,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:57:23,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:57:23,006 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-09 08:57:24,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:57:24,120 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-09 08:57:24,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:24 BoogieIcfgContainer [2021-11-09 08:57:24,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:57:24,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:57:24,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:57:24,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:57:24,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:57:22" (1/3) ... [2021-11-09 08:57:24,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44222163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:24, skipping insertion in model container [2021-11-09 08:57:24,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:22" (2/3) ... [2021-11-09 08:57:24,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44222163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:24, skipping insertion in model container [2021-11-09 08:57:24,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:24" (3/3) ... [2021-11-09 08:57:24,133 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2021-11-09 08:57:24,139 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-09 08:57:24,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:57:24,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:57:24,140 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-09 08:57:24,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,184 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,186 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,187 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,188 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,190 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,191 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,193 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,194 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,199 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,201 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,202 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,203 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,203 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,208 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,208 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,210 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,211 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,212 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,212 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,215 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,216 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,216 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,216 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,217 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,217 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,217 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,217 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,218 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,218 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,220 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,222 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,225 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,225 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,225 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,226 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-09 08:57:24,234 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-09 08:57:24,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:57:24,293 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 [2021-11-09 08:57:24,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 08:57:24,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 230 transitions, 484 flow [2021-11-09 08:57:24,440 INFO L129 PetriNetUnfolder]: 19/227 cut-off events. [2021-11-09 08:57:24,440 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 08:57:24,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 227 events. 19/227 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2021-11-09 08:57:24,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 230 transitions, 484 flow [2021-11-09 08:57:24,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 217 transitions, 452 flow [2021-11-09 08:57:24,515 INFO L129 PetriNetUnfolder]: 19/216 cut-off events. [2021-11-09 08:57:24,515 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 08:57:24,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:24,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:24,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1820746027, now seen corresponding path program 1 times [2021-11-09 08:57:24,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:24,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471512675] [2021-11-09 08:57:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:24,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:24,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:24,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471512675] [2021-11-09 08:57:24,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471512675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:24,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:24,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:57:24,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475223423] [2021-11-09 08:57:24,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:57:24,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:57:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:57:24,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 230 [2021-11-09 08:57:25,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 217.5) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:25,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 230 [2021-11-09 08:57:25,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:25,051 INFO L129 PetriNetUnfolder]: 6/204 cut-off events. [2021-11-09 08:57:25,052 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-09 08:57:25,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 204 events. 6/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 13/204 useless extension candidates. Maximal degree in co-relation 213. Up to 2 conditions per place. [2021-11-09 08:57:25,055 INFO L132 encePairwiseOnDemand]: 217/230 looper letters, 0 selfloop transitions, 0 changer transitions 7/204 dead transitions. [2021-11-09 08:57:25,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 204 transitions, 426 flow [2021-11-09 08:57:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:57:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-09 08:57:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 445 transitions. [2021-11-09 08:57:25,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.967391304347826 [2021-11-09 08:57:25,072 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 445 transitions. [2021-11-09 08:57:25,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 445 transitions. [2021-11-09 08:57:25,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:25,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 445 transitions. [2021-11-09 08:57:25,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,091 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,093 INFO L186 Difference]: Start difference. First operand has 208 places, 217 transitions, 452 flow. Second operand 2 states and 445 transitions. [2021-11-09 08:57:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 204 transitions, 426 flow [2021-11-09 08:57:25,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 204 transitions, 414 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-09 08:57:25,104 INFO L242 Difference]: Finished difference. Result has 203 places, 197 transitions, 400 flow [2021-11-09 08:57:25,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=203, PETRI_TRANSITIONS=197} [2021-11-09 08:57:25,108 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -5 predicate places. [2021-11-09 08:57:25,108 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 197 transitions, 400 flow [2021-11-09 08:57:25,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 217.5) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:25,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:25,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:57:25,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:25,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1190029509, now seen corresponding path program 1 times [2021-11-09 08:57:25,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:25,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014937920] [2021-11-09 08:57:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:25,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:25,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:25,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014937920] [2021-11-09 08:57:25,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014937920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:25,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:25,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:57:25,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861233028] [2021-11-09 08:57:25,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:57:25,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:57:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:57:25,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 230 [2021-11-09 08:57:25,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 197 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:25,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 230 [2021-11-09 08:57:25,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:25,622 INFO L129 PetriNetUnfolder]: 29/274 cut-off events. [2021-11-09 08:57:25,622 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-09 08:57:25,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 274 events. 29/274 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 5 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 340. Up to 36 conditions per place. [2021-11-09 08:57:25,626 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 33 selfloop transitions, 4 changer transitions 3/203 dead transitions. [2021-11-09 08:57:25,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 203 transitions, 492 flow [2021-11-09 08:57:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:57:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-09 08:57:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 916 transitions. [2021-11-09 08:57:25,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7965217391304348 [2021-11-09 08:57:25,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 916 transitions. [2021-11-09 08:57:25,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 916 transitions. [2021-11-09 08:57:25,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:25,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 916 transitions. [2021-11-09 08:57:25,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.2) internal successors, (916), 5 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,647 INFO L186 Difference]: Start difference. First operand has 203 places, 197 transitions, 400 flow. Second operand 5 states and 916 transitions. [2021-11-09 08:57:25,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 203 transitions, 492 flow [2021-11-09 08:57:25,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 203 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-09 08:57:25,662 INFO L242 Difference]: Finished difference. Result has 203 places, 200 transitions, 430 flow [2021-11-09 08:57:25,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2021-11-09 08:57:25,663 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -5 predicate places. [2021-11-09 08:57:25,663 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 430 flow [2021-11-09 08:57:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:25,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:25,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:57:25,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1279561381, now seen corresponding path program 1 times [2021-11-09 08:57:25,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:25,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306773113] [2021-11-09 08:57:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:25,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:25,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:25,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306773113] [2021-11-09 08:57:25,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306773113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:25,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:25,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:57:25,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111177136] [2021-11-09 08:57:25,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:57:25,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:57:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:57:25,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 230 [2021-11-09 08:57:25,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:25,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:25,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 230 [2021-11-09 08:57:25,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:26,111 INFO L129 PetriNetUnfolder]: 45/451 cut-off events. [2021-11-09 08:57:26,112 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-11-09 08:57:26,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 451 events. 45/451 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1149 event pairs, 8 based on Foata normal form. 4/420 useless extension candidates. Maximal degree in co-relation 598. Up to 63 conditions per place. [2021-11-09 08:57:26,116 INFO L132 encePairwiseOnDemand]: 218/230 looper letters, 39 selfloop transitions, 8 changer transitions 25/229 dead transitions. [2021-11-09 08:57:26,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 229 transitions, 632 flow [2021-11-09 08:57:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:57:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 08:57:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2021-11-09 08:57:26,123 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7922705314009661 [2021-11-09 08:57:26,123 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2021-11-09 08:57:26,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2021-11-09 08:57:26,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:26,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2021-11-09 08:57:26,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,139 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,139 INFO L186 Difference]: Start difference. First operand has 203 places, 200 transitions, 430 flow. Second operand 9 states and 1640 transitions. [2021-11-09 08:57:26,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 229 transitions, 632 flow [2021-11-09 08:57:26,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 229 transitions, 624 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-09 08:57:26,147 INFO L242 Difference]: Finished difference. Result has 208 places, 201 transitions, 456 flow [2021-11-09 08:57:26,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=456, PETRI_PLACES=208, PETRI_TRANSITIONS=201} [2021-11-09 08:57:26,148 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 0 predicate places. [2021-11-09 08:57:26,148 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 201 transitions, 456 flow [2021-11-09 08:57:26,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:26,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:26,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:57:26,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1087621387, now seen corresponding path program 1 times [2021-11-09 08:57:26,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:26,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656652992] [2021-11-09 08:57:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:26,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:57:26,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:26,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656652992] [2021-11-09 08:57:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656652992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:26,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:26,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711008821] [2021-11-09 08:57:26,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:26,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-11-09 08:57:26,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 201 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:26,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-11-09 08:57:26,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:26,406 INFO L129 PetriNetUnfolder]: 31/321 cut-off events. [2021-11-09 08:57:26,406 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2021-11-09 08:57:26,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 321 events. 31/321 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 687 event pairs, 9 based on Foata normal form. 6/305 useless extension candidates. Maximal degree in co-relation 407. Up to 28 conditions per place. [2021-11-09 08:57:26,411 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 5 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2021-11-09 08:57:26,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 201 transitions, 468 flow [2021-11-09 08:57:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 08:57:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2021-11-09 08:57:26,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246376811594202 [2021-11-09 08:57:26,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2021-11-09 08:57:26,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2021-11-09 08:57:26,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:26,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2021-11-09 08:57:26,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,423 INFO L186 Difference]: Start difference. First operand has 208 places, 201 transitions, 456 flow. Second operand 3 states and 638 transitions. [2021-11-09 08:57:26,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 201 transitions, 468 flow [2021-11-09 08:57:26,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 201 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-09 08:57:26,431 INFO L242 Difference]: Finished difference. Result has 204 places, 201 transitions, 450 flow [2021-11-09 08:57:26,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=204, PETRI_TRANSITIONS=201} [2021-11-09 08:57:26,432 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -4 predicate places. [2021-11-09 08:57:26,433 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 201 transitions, 450 flow [2021-11-09 08:57:26,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:26,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:26,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:57:26,434 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash 534236495, now seen corresponding path program 1 times [2021-11-09 08:57:26,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:26,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841664106] [2021-11-09 08:57:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:26,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:57:26,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:26,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841664106] [2021-11-09 08:57:26,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841664106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:26,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:26,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:57:26,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615366998] [2021-11-09 08:57:26,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:57:26,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:57:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:57:26,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 230 [2021-11-09 08:57:26,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 201 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:26,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 230 [2021-11-09 08:57:26,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:26,797 INFO L129 PetriNetUnfolder]: 38/343 cut-off events. [2021-11-09 08:57:26,797 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-11-09 08:57:26,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 343 events. 38/343 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 804 event pairs, 11 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2021-11-09 08:57:26,801 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 4 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2021-11-09 08:57:26,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 201 transitions, 468 flow [2021-11-09 08:57:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:57:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 08:57:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 839 transitions. [2021-11-09 08:57:26,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119565217391304 [2021-11-09 08:57:26,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 839 transitions. [2021-11-09 08:57:26,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 839 transitions. [2021-11-09 08:57:26,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:26,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 839 transitions. [2021-11-09 08:57:26,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,814 INFO L186 Difference]: Start difference. First operand has 204 places, 201 transitions, 450 flow. Second operand 4 states and 839 transitions. [2021-11-09 08:57:26,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 201 transitions, 468 flow [2021-11-09 08:57:26,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 201 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 08:57:26,822 INFO L242 Difference]: Finished difference. Result has 207 places, 201 transitions, 464 flow [2021-11-09 08:57:26,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2021-11-09 08:57:26,823 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, -1 predicate places. [2021-11-09 08:57:26,823 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 464 flow [2021-11-09 08:57:26,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:26,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:26,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:57:26,824 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash 578461014, now seen corresponding path program 1 times [2021-11-09 08:57:26,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:26,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106133398] [2021-11-09 08:57:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:26,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 08:57:26,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:26,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106133398] [2021-11-09 08:57:26,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106133398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:26,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:26,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:57:26,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722397111] [2021-11-09 08:57:26,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:57:26,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:57:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:57:26,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 230 [2021-11-09 08:57:26,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:26,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:26,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 230 [2021-11-09 08:57:26,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:27,189 INFO L129 PetriNetUnfolder]: 44/464 cut-off events. [2021-11-09 08:57:27,190 INFO L130 PetriNetUnfolder]: For 57/62 co-relation queries the response was YES. [2021-11-09 08:57:27,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 464 events. 44/464 cut-off events. For 57/62 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1361 event pairs, 13 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 668. Up to 37 conditions per place. [2021-11-09 08:57:27,195 INFO L132 encePairwiseOnDemand]: 220/230 looper letters, 38 selfloop transitions, 8 changer transitions 13/218 dead transitions. [2021-11-09 08:57:27,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 218 transitions, 616 flow [2021-11-09 08:57:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:57:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-09 08:57:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2021-11-09 08:57:27,201 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7932367149758454 [2021-11-09 08:57:27,201 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2021-11-09 08:57:27,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2021-11-09 08:57:27,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:27,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2021-11-09 08:57:27,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,215 INFO L186 Difference]: Start difference. First operand has 207 places, 201 transitions, 464 flow. Second operand 9 states and 1642 transitions. [2021-11-09 08:57:27,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 218 transitions, 616 flow [2021-11-09 08:57:27,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-09 08:57:27,224 INFO L242 Difference]: Finished difference. Result has 215 places, 202 transitions, 482 flow [2021-11-09 08:57:27,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2021-11-09 08:57:27,225 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 7 predicate places. [2021-11-09 08:57:27,225 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 482 flow [2021-11-09 08:57:27,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,229 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:27,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:27,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:57:27,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash 604032035, now seen corresponding path program 1 times [2021-11-09 08:57:27,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:27,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847422564] [2021-11-09 08:57:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:27,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:57:27,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:27,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847422564] [2021-11-09 08:57:27,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847422564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:27,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:27,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:57:27,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333683038] [2021-11-09 08:57:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:57:27,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:57:27,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:57:27,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 230 [2021-11-09 08:57:27,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:27,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 230 [2021-11-09 08:57:27,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:27,573 INFO L129 PetriNetUnfolder]: 39/415 cut-off events. [2021-11-09 08:57:27,574 INFO L130 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2021-11-09 08:57:27,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 415 events. 39/415 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1113 event pairs, 12 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 609. Up to 34 conditions per place. [2021-11-09 08:57:27,578 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 41 selfloop transitions, 6 changer transitions 1/207 dead transitions. [2021-11-09 08:57:27,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 588 flow [2021-11-09 08:57:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:57:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-09 08:57:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2021-11-09 08:57:27,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7937888198757764 [2021-11-09 08:57:27,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1278 transitions. [2021-11-09 08:57:27,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1278 transitions. [2021-11-09 08:57:27,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:27,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1278 transitions. [2021-11-09 08:57:27,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,596 INFO L186 Difference]: Start difference. First operand has 215 places, 202 transitions, 482 flow. Second operand 7 states and 1278 transitions. [2021-11-09 08:57:27,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 588 flow [2021-11-09 08:57:27,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 207 transitions, 570 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-11-09 08:57:27,605 INFO L242 Difference]: Finished difference. Result has 215 places, 203 transitions, 486 flow [2021-11-09 08:57:27,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2021-11-09 08:57:27,606 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 7 predicate places. [2021-11-09 08:57:27,606 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 486 flow [2021-11-09 08:57:27,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:27,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:27,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:57:27,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash -808724674, now seen corresponding path program 1 times [2021-11-09 08:57:27,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:27,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604829341] [2021-11-09 08:57:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:27,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 08:57:27,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:27,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604829341] [2021-11-09 08:57:27,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604829341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:27,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:27,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:27,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302586010] [2021-11-09 08:57:27,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:27,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:27,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:27,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 230 [2021-11-09 08:57:27,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:27,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 230 [2021-11-09 08:57:27,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:27,885 INFO L129 PetriNetUnfolder]: 29/300 cut-off events. [2021-11-09 08:57:27,885 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-11-09 08:57:27,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 300 events. 29/300 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 418 event pairs, 7 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 418. Up to 29 conditions per place. [2021-11-09 08:57:27,888 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 7 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2021-11-09 08:57:27,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 204 transitions, 516 flow [2021-11-09 08:57:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-09 08:57:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2021-11-09 08:57:27,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9101449275362319 [2021-11-09 08:57:27,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2021-11-09 08:57:27,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2021-11-09 08:57:27,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:27,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2021-11-09 08:57:27,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,898 INFO L186 Difference]: Start difference. First operand has 215 places, 203 transitions, 486 flow. Second operand 3 states and 628 transitions. [2021-11-09 08:57:27,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 204 transitions, 516 flow [2021-11-09 08:57:27,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 204 transitions, 504 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-11-09 08:57:27,905 INFO L242 Difference]: Finished difference. Result has 212 places, 204 transitions, 500 flow [2021-11-09 08:57:27,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2021-11-09 08:57:27,906 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 4 predicate places. [2021-11-09 08:57:27,906 INFO L470 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 500 flow [2021-11-09 08:57:27,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:27,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:27,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:57:27,908 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1639584990, now seen corresponding path program 1 times [2021-11-09 08:57:27,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:27,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902058778] [2021-11-09 08:57:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:27,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:57:28,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:28,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902058778] [2021-11-09 08:57:28,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902058778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:28,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134913922] [2021-11-09 08:57:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:28,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:57:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:28,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:57:28,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:57:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:28,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:57:28,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 08:57:29,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134913922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:29,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:57:29,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-09 08:57:29,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116709913] [2021-11-09 08:57:29,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:57:29,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:57:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:57:29,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 230 [2021-11-09 08:57:29,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 500 flow. Second operand has 13 states, 13 states have (on average 175.15384615384616) internal successors, (2277), 13 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:29,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 230 [2021-11-09 08:57:29,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:29,498 INFO L129 PetriNetUnfolder]: 27/424 cut-off events. [2021-11-09 08:57:29,498 INFO L130 PetriNetUnfolder]: For 65/71 co-relation queries the response was YES. [2021-11-09 08:57:29,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 424 events. 27/424 cut-off events. For 65/71 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 936 event pairs, 8 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 632. Up to 28 conditions per place. [2021-11-09 08:57:29,502 INFO L132 encePairwiseOnDemand]: 213/230 looper letters, 43 selfloop transitions, 14 changer transitions 16/228 dead transitions. [2021-11-09 08:57:29,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 228 transitions, 708 flow [2021-11-09 08:57:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:57:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-09 08:57:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2465 transitions. [2021-11-09 08:57:29,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765527950310559 [2021-11-09 08:57:29,511 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2465 transitions. [2021-11-09 08:57:29,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2465 transitions. [2021-11-09 08:57:29,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:29,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2465 transitions. [2021-11-09 08:57:29,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 176.07142857142858) internal successors, (2465), 14 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,533 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,533 INFO L186 Difference]: Start difference. First operand has 212 places, 204 transitions, 500 flow. Second operand 14 states and 2465 transitions. [2021-11-09 08:57:29,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 228 transitions, 708 flow [2021-11-09 08:57:29,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 228 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-09 08:57:29,542 INFO L242 Difference]: Finished difference. Result has 230 places, 207 transitions, 564 flow [2021-11-09 08:57:29,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=564, PETRI_PLACES=230, PETRI_TRANSITIONS=207} [2021-11-09 08:57:29,543 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 22 predicate places. [2021-11-09 08:57:29,544 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 207 transitions, 564 flow [2021-11-09 08:57:29,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 175.15384615384616) internal successors, (2277), 13 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:29,546 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:29,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:57:29,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-09 08:57:29,773 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1094306085, now seen corresponding path program 2 times [2021-11-09 08:57:29,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:29,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60384676] [2021-11-09 08:57:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:29,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:57:30,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:30,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60384676] [2021-11-09 08:57:30,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60384676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:30,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896155790] [2021-11-09 08:57:30,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:57:30,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:57:30,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:30,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:57:30,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:57:30,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:57:30,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:57:30,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:57:30,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 08:57:30,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896155790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:30,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:57:30,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-11-09 08:57:30,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052651089] [2021-11-09 08:57:30,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:57:30,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:57:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:57:30,956 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 230 [2021-11-09 08:57:30,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 207 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:30,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:30,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 230 [2021-11-09 08:57:30,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:31,090 INFO L129 PetriNetUnfolder]: 71/492 cut-off events. [2021-11-09 08:57:31,090 INFO L130 PetriNetUnfolder]: For 220/232 co-relation queries the response was YES. [2021-11-09 08:57:31,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 492 events. 71/492 cut-off events. For 220/232 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1491 event pairs, 19 based on Foata normal form. 7/460 useless extension candidates. Maximal degree in co-relation 835. Up to 58 conditions per place. [2021-11-09 08:57:31,096 INFO L132 encePairwiseOnDemand]: 225/230 looper letters, 7 selfloop transitions, 9 changer transitions 0/213 dead transitions. [2021-11-09 08:57:31,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 213 transitions, 624 flow [2021-11-09 08:57:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:57:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 08:57:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 848 transitions. [2021-11-09 08:57:31,100 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9217391304347826 [2021-11-09 08:57:31,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 848 transitions. [2021-11-09 08:57:31,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 848 transitions. [2021-11-09 08:57:31,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:31,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 848 transitions. [2021-11-09 08:57:31,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:31,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:31,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:31,107 INFO L186 Difference]: Start difference. First operand has 230 places, 207 transitions, 564 flow. Second operand 4 states and 848 transitions. [2021-11-09 08:57:31,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 213 transitions, 624 flow [2021-11-09 08:57:31,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 213 transitions, 580 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-11-09 08:57:31,115 INFO L242 Difference]: Finished difference. Result has 222 places, 213 transitions, 593 flow [2021-11-09 08:57:31,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=593, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2021-11-09 08:57:31,117 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 14 predicate places. [2021-11-09 08:57:31,117 INFO L470 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 593 flow [2021-11-09 08:57:31,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:31,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:31,118 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:31,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:57:31,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:57:31,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:31,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1661064449, now seen corresponding path program 1 times [2021-11-09 08:57:31,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:31,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366596882] [2021-11-09 08:57:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:31,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:57:31,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:31,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366596882] [2021-11-09 08:57:31,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366596882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:31,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009603578] [2021-11-09 08:57:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:31,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:57:31,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:31,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:57:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:57:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:31,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:57:31,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:57:32,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009603578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:32,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:57:32,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-09 08:57:32,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148856735] [2021-11-09 08:57:32,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:57:32,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:57:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:57:32,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 230 [2021-11-09 08:57:32,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:32,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 230 [2021-11-09 08:57:32,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:57:32,921 INFO L129 PetriNetUnfolder]: 73/648 cut-off events. [2021-11-09 08:57:32,921 INFO L130 PetriNetUnfolder]: For 387/407 co-relation queries the response was YES. [2021-11-09 08:57:32,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 648 events. 73/648 cut-off events. For 387/407 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1995 event pairs, 19 based on Foata normal form. 5/611 useless extension candidates. Maximal degree in co-relation 1197. Up to 105 conditions per place. [2021-11-09 08:57:32,928 INFO L132 encePairwiseOnDemand]: 213/230 looper letters, 58 selfloop transitions, 11 changer transitions 34/255 dead transitions. [2021-11-09 08:57:32,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 255 transitions, 941 flow [2021-11-09 08:57:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:57:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-09 08:57:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2452 transitions. [2021-11-09 08:57:32,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614906832298136 [2021-11-09 08:57:32,939 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2452 transitions. [2021-11-09 08:57:32,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2452 transitions. [2021-11-09 08:57:32,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:57:32,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2452 transitions. [2021-11-09 08:57:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 175.14285714285714) internal successors, (2452), 14 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,967 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,967 INFO L186 Difference]: Start difference. First operand has 222 places, 213 transitions, 593 flow. Second operand 14 states and 2452 transitions. [2021-11-09 08:57:32,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 255 transitions, 941 flow [2021-11-09 08:57:32,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 255 transitions, 917 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-11-09 08:57:32,977 INFO L242 Difference]: Finished difference. Result has 241 places, 216 transitions, 639 flow [2021-11-09 08:57:32,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=639, PETRI_PLACES=241, PETRI_TRANSITIONS=216} [2021-11-09 08:57:32,978 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 33 predicate places. [2021-11-09 08:57:32,978 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 216 transitions, 639 flow [2021-11-09 08:57:32,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:57:32,980 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:33,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:57:33,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 08:57:33,193 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:57:33,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash 432875825, now seen corresponding path program 2 times [2021-11-09 08:57:33,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:33,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166587242] [2021-11-09 08:57:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:33,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:39,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:39,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166587242] [2021-11-09 08:57:39,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166587242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:39,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131293768] [2021-11-09 08:57:39,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:57:39,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:57:39,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:39,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:57:39,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:57:40,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:57:40,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:57:40,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 143 conjunts are in the unsatisfiable core [2021-11-09 08:57:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:40,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:57:41,165 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-09 08:57:41,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-09 08:57:42,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 08:57:43,980 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-09 08:57:43,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-09 08:57:44,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 08:57:45,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-09 08:57:48,174 INFO L354 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2021-11-09 08:57:48,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 33 [2021-11-09 08:57:48,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 08:57:50,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:57:50,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:57:50,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-09 08:57:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:56,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131293768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:57:56,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:57:56,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 57] total 106 [2021-11-09 08:57:56,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287516369] [2021-11-09 08:57:56,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-09 08:57:56,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-09 08:57:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=10545, Unknown=0, NotChecked=0, Total=11130 [2021-11-09 08:57:56,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 230 [2021-11-09 08:57:56,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 216 transitions, 639 flow. Second operand has 106 states, 106 states have (on average 72.4622641509434) internal successors, (7681), 106 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:56,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:57:56,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 230 [2021-11-09 08:57:56,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:40,403 INFO L129 PetriNetUnfolder]: 1093/3460 cut-off events. [2021-11-09 08:58:40,403 INFO L130 PetriNetUnfolder]: For 3502/3636 co-relation queries the response was YES. [2021-11-09 08:58:40,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 3460 events. 1093/3460 cut-off events. For 3502/3636 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25777 event pairs, 50 based on Foata normal form. 59/3298 useless extension candidates. Maximal degree in co-relation 8377. Up to 701 conditions per place. [2021-11-09 08:58:40,448 INFO L132 encePairwiseOnDemand]: 164/230 looper letters, 311 selfloop transitions, 193 changer transitions 27/595 dead transitions. [2021-11-09 08:58:40,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 595 transitions, 3227 flow [2021-11-09 08:58:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-09 08:58:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-11-09 08:58:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 8308 transitions. [2021-11-09 08:58:40,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3225155279503106 [2021-11-09 08:58:40,477 INFO L72 ComplementDD]: Start complementDD. Operand 112 states and 8308 transitions. [2021-11-09 08:58:40,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 8308 transitions. [2021-11-09 08:58:40,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:40,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 112 states and 8308 transitions. [2021-11-09 08:58:40,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 113 states, 112 states have (on average 74.17857142857143) internal successors, (8308), 112 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:40,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 113 states, 113 states have (on average 230.0) internal successors, (25990), 113 states have internal predecessors, (25990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:40,551 INFO L81 ComplementDD]: Finished complementDD. Result has 113 states, 113 states have (on average 230.0) internal successors, (25990), 113 states have internal predecessors, (25990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:40,551 INFO L186 Difference]: Start difference. First operand has 241 places, 216 transitions, 639 flow. Second operand 112 states and 8308 transitions. [2021-11-09 08:58:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 595 transitions, 3227 flow [2021-11-09 08:58:40,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 595 transitions, 3125 flow, removed 40 selfloop flow, removed 9 redundant places. [2021-11-09 08:58:40,576 INFO L242 Difference]: Finished difference. Result has 401 places, 412 transitions, 2453 flow [2021-11-09 08:58:40,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=2453, PETRI_PLACES=401, PETRI_TRANSITIONS=412} [2021-11-09 08:58:40,577 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 193 predicate places. [2021-11-09 08:58:40,577 INFO L470 AbstractCegarLoop]: Abstraction has has 401 places, 412 transitions, 2453 flow [2021-11-09 08:58:40,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 72.4622641509434) internal successors, (7681), 106 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:40,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:40,580 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:40,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:40,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 08:58:40,797 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash -222568713, now seen corresponding path program 3 times [2021-11-09 08:58:40,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:40,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526977682] [2021-11-09 08:58:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:40,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:58:40,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:40,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526977682] [2021-11-09 08:58:40,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526977682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:40,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995021116] [2021-11-09 08:58:40,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:58:40,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:40,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:40,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:40,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:58:42,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:58:42,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:58:42,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-09 08:58:42,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995021116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:42,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:58:42,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-11-09 08:58:42,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013286622] [2021-11-09 08:58:42,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:58:42,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:58:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:58:42,699 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-11-09 08:58:42,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 412 transitions, 2453 flow. Second operand has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:42,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:42,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-11-09 08:58:42,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:58:43,290 INFO L129 PetriNetUnfolder]: 238/1610 cut-off events. [2021-11-09 08:58:43,291 INFO L130 PetriNetUnfolder]: For 2526/2563 co-relation queries the response was YES. [2021-11-09 08:58:43,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1610 events. 238/1610 cut-off events. For 2526/2563 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9343 event pairs, 66 based on Foata normal form. 45/1547 useless extension candidates. Maximal degree in co-relation 3621. Up to 306 conditions per place. [2021-11-09 08:58:43,318 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 5 selfloop transitions, 14 changer transitions 0/340 dead transitions. [2021-11-09 08:58:43,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 340 transitions, 1817 flow [2021-11-09 08:58:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:58:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 08:58:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 850 transitions. [2021-11-09 08:58:43,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9239130434782609 [2021-11-09 08:58:43,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 850 transitions. [2021-11-09 08:58:43,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 850 transitions. [2021-11-09 08:58:43,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:58:43,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 850 transitions. [2021-11-09 08:58:43,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,323 INFO L186 Difference]: Start difference. First operand has 401 places, 412 transitions, 2453 flow. Second operand 4 states and 850 transitions. [2021-11-09 08:58:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 340 transitions, 1817 flow [2021-11-09 08:58:43,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 340 transitions, 1619 flow, removed 78 selfloop flow, removed 24 redundant places. [2021-11-09 08:58:43,353 INFO L242 Difference]: Finished difference. Result has 373 places, 340 transitions, 1640 flow [2021-11-09 08:58:43,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1640, PETRI_PLACES=373, PETRI_TRANSITIONS=340} [2021-11-09 08:58:43,354 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 165 predicate places. [2021-11-09 08:58:43,354 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 340 transitions, 1640 flow [2021-11-09 08:58:43,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:58:43,355 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:43,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:43,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:43,581 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:58:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1179219687, now seen corresponding path program 4 times [2021-11-09 08:58:43,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:43,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369184941] [2021-11-09 08:58:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:43,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:50,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:50,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369184941] [2021-11-09 08:58:50,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369184941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:50,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974799750] [2021-11-09 08:58:50,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:58:50,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:50,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:50,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:50,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:58:51,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:58:51,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:51,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-09 08:58:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-09 08:58:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974799750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:55,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:55,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 17] total 66 [2021-11-09 08:58:55,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847552937] [2021-11-09 08:58:55,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 08:58:55,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 08:58:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 08:58:55,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-11-09 08:58:55,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 340 transitions, 1640 flow. Second operand has 66 states, 66 states have (on average 86.66666666666667) internal successors, (5720), 66 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:55,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:58:55,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-11-09 08:58:55,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:59:05,314 INFO L129 PetriNetUnfolder]: 894/3523 cut-off events. [2021-11-09 08:59:05,314 INFO L130 PetriNetUnfolder]: For 6897/6977 co-relation queries the response was YES. [2021-11-09 08:59:05,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10038 conditions, 3523 events. 894/3523 cut-off events. For 6897/6977 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 25516 event pairs, 174 based on Foata normal form. 5/3279 useless extension candidates. Maximal degree in co-relation 9965. Up to 1291 conditions per place. [2021-11-09 08:59:05,472 INFO L132 encePairwiseOnDemand]: 167/230 looper letters, 288 selfloop transitions, 188 changer transitions 17/564 dead transitions. [2021-11-09 08:59:05,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 564 transitions, 3548 flow [2021-11-09 08:59:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-09 08:59:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-11-09 08:59:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 9749 transitions. [2021-11-09 08:59:05,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37510580992689496 [2021-11-09 08:59:05,503 INFO L72 ComplementDD]: Start complementDD. Operand 113 states and 9749 transitions. [2021-11-09 08:59:05,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 9749 transitions. [2021-11-09 08:59:05,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:59:05,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 113 states and 9749 transitions. [2021-11-09 08:59:05,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 114 states, 113 states have (on average 86.27433628318585) internal successors, (9749), 113 states have internal predecessors, (9749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:05,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 114 states, 114 states have (on average 230.0) internal successors, (26220), 114 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:05,587 INFO L81 ComplementDD]: Finished complementDD. Result has 114 states, 114 states have (on average 230.0) internal successors, (26220), 114 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:05,587 INFO L186 Difference]: Start difference. First operand has 373 places, 340 transitions, 1640 flow. Second operand 113 states and 9749 transitions. [2021-11-09 08:59:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 564 transitions, 3548 flow [2021-11-09 08:59:05,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 564 transitions, 3532 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-11-09 08:59:05,632 INFO L242 Difference]: Finished difference. Result has 517 places, 430 transitions, 2796 flow [2021-11-09 08:59:05,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=2796, PETRI_PLACES=517, PETRI_TRANSITIONS=430} [2021-11-09 08:59:05,633 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 309 predicate places. [2021-11-09 08:59:05,634 INFO L470 AbstractCegarLoop]: Abstraction has has 517 places, 430 transitions, 2796 flow [2021-11-09 08:59:05,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 86.66666666666667) internal successors, (5720), 66 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:05,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:59:05,636 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:05,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:05,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:59:05,861 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:59:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1436123479, now seen corresponding path program 5 times [2021-11-09 08:59:05,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:05,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238867643] [2021-11-09 08:59:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:05,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 08:59:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:06,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238867643] [2021-11-09 08:59:06,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238867643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:06,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126086226] [2021-11-09 08:59:06,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:59:06,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:59:06,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:59:06,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:59:06,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 08:59:07,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-09 08:59:07,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:59:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:59:07,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-09 08:59:08,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126086226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:08,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:59:08,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-09 08:59:08,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952887996] [2021-11-09 08:59:08,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:08,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:08,131 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 230 [2021-11-09 08:59:08,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 430 transitions, 2796 flow. Second operand has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:08,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:59:08,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 230 [2021-11-09 08:59:08,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:59:08,555 INFO L129 PetriNetUnfolder]: 16/1041 cut-off events. [2021-11-09 08:59:08,556 INFO L130 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2021-11-09 08:59:08,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1041 events. 16/1041 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5051 event pairs, 0 based on Foata normal form. 11/1015 useless extension candidates. Maximal degree in co-relation 2054. Up to 47 conditions per place. [2021-11-09 08:59:08,568 INFO L132 encePairwiseOnDemand]: 227/230 looper letters, 3 selfloop transitions, 13 changer transitions 0/388 dead transitions. [2021-11-09 08:59:08,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 388 transitions, 2472 flow [2021-11-09 08:59:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-09 08:59:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2021-11-09 08:59:08,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9206521739130434 [2021-11-09 08:59:08,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2021-11-09 08:59:08,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2021-11-09 08:59:08,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:59:08,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2021-11-09 08:59:08,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:08,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:08,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:08,576 INFO L186 Difference]: Start difference. First operand has 517 places, 430 transitions, 2796 flow. Second operand 4 states and 847 transitions. [2021-11-09 08:59:08,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 388 transitions, 2472 flow [2021-11-09 08:59:08,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 388 transitions, 2039 flow, removed 103 selfloop flow, removed 43 redundant places. [2021-11-09 08:59:08,619 INFO L242 Difference]: Finished difference. Result has 468 places, 388 transitions, 2033 flow [2021-11-09 08:59:08,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2033, PETRI_PLACES=468, PETRI_TRANSITIONS=388} [2021-11-09 08:59:08,620 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 260 predicate places. [2021-11-09 08:59:08,620 INFO L470 AbstractCegarLoop]: Abstraction has has 468 places, 388 transitions, 2033 flow [2021-11-09 08:59:08,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:08,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:59:08,621 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:08,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:08,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 08:59:08,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:59:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1449133544, now seen corresponding path program 6 times [2021-11-09 08:59:08,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:08,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854594495] [2021-11-09 08:59:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:08,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:59:09,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:09,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854594495] [2021-11-09 08:59:09,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854594495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:09,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851513394] [2021-11-09 08:59:09,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:59:09,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:59:09,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:59:09,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:59:09,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 08:59:10,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-09 08:59:10,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:59:10,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:59:10,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 08:59:11,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851513394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:11,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:59:11,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-11-09 08:59:11,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474296242] [2021-11-09 08:59:11,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:59:11,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:59:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:59:11,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2021-11-09 08:59:11,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 388 transitions, 2033 flow. Second operand has 22 states, 22 states have (on average 168.5) internal successors, (3707), 22 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:11,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:59:11,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2021-11-09 08:59:11,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:59:12,924 INFO L129 PetriNetUnfolder]: 15/1320 cut-off events. [2021-11-09 08:59:12,925 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2021-11-09 08:59:12,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1320 events. 15/1320 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7623 event pairs, 0 based on Foata normal form. 4/1271 useless extension candidates. Maximal degree in co-relation 2504. Up to 51 conditions per place. [2021-11-09 08:59:12,940 INFO L132 encePairwiseOnDemand]: 200/230 looper letters, 65 selfloop transitions, 27 changer transitions 215/453 dead transitions. [2021-11-09 08:59:12,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 453 transitions, 2885 flow [2021-11-09 08:59:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-09 08:59:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-11-09 08:59:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 9771 transitions. [2021-11-09 08:59:12,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7200442151805453 [2021-11-09 08:59:12,953 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 9771 transitions. [2021-11-09 08:59:12,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 9771 transitions. [2021-11-09 08:59:12,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:59:12,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 9771 transitions. [2021-11-09 08:59:12,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 165.61016949152543) internal successors, (9771), 59 states have internal predecessors, (9771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:12,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 230.0) internal successors, (13800), 60 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:12,993 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 230.0) internal successors, (13800), 60 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:12,994 INFO L186 Difference]: Start difference. First operand has 468 places, 388 transitions, 2033 flow. Second operand 59 states and 9771 transitions. [2021-11-09 08:59:12,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 453 transitions, 2885 flow [2021-11-09 08:59:13,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 453 transitions, 2846 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-09 08:59:13,026 INFO L242 Difference]: Finished difference. Result has 539 places, 225 transitions, 908 flow [2021-11-09 08:59:13,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=908, PETRI_PLACES=539, PETRI_TRANSITIONS=225} [2021-11-09 08:59:13,027 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 331 predicate places. [2021-11-09 08:59:13,028 INFO L470 AbstractCegarLoop]: Abstraction has has 539 places, 225 transitions, 908 flow [2021-11-09 08:59:13,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 168.5) internal successors, (3707), 22 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:13,029 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:59:13,029 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:13,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:13,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 08:59:13,245 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:59:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1527481947, now seen corresponding path program 7 times [2021-11-09 08:59:13,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:13,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704422431] [2021-11-09 08:59:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:13,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-09 08:59:13,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:13,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704422431] [2021-11-09 08:59:13,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704422431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:13,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734443305] [2021-11-09 08:59:13,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:59:13,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:59:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:59:13,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:59:13,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 08:59:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:15,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 08:59:15,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-09 08:59:15,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734443305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:15,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:59:15,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-11-09 08:59:15,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74922866] [2021-11-09 08:59:15,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 08:59:15,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 08:59:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:59:15,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 230 [2021-11-09 08:59:15,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 225 transitions, 908 flow. Second operand has 19 states, 19 states have (on average 172.68421052631578) internal successors, (3281), 19 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:15,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:59:15,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 230 [2021-11-09 08:59:15,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 08:59:16,592 INFO L129 PetriNetUnfolder]: 5/482 cut-off events. [2021-11-09 08:59:16,592 INFO L130 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2021-11-09 08:59:16,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 482 events. 5/482 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1025 event pairs, 0 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 992. Up to 33 conditions per place. [2021-11-09 08:59:16,597 INFO L132 encePairwiseOnDemand]: 205/230 looper letters, 45 selfloop transitions, 33 changer transitions 22/257 dead transitions. [2021-11-09 08:59:16,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 257 transitions, 1330 flow [2021-11-09 08:59:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 08:59:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-09 08:59:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4644 transitions. [2021-11-09 08:59:16,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7478260869565218 [2021-11-09 08:59:16,604 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4644 transitions. [2021-11-09 08:59:16,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4644 transitions. [2021-11-09 08:59:16,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 08:59:16,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4644 transitions. [2021-11-09 08:59:16,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 172.0) internal successors, (4644), 27 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:16,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 230.0) internal successors, (6440), 28 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:16,624 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 230.0) internal successors, (6440), 28 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:16,624 INFO L186 Difference]: Start difference. First operand has 539 places, 225 transitions, 908 flow. Second operand 27 states and 4644 transitions. [2021-11-09 08:59:16,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 257 transitions, 1330 flow [2021-11-09 08:59:16,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 257 transitions, 997 flow, removed 131 selfloop flow, removed 78 redundant places. [2021-11-09 08:59:16,642 INFO L242 Difference]: Finished difference. Result has 321 places, 228 transitions, 804 flow [2021-11-09 08:59:16,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=804, PETRI_PLACES=321, PETRI_TRANSITIONS=228} [2021-11-09 08:59:16,643 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 113 predicate places. [2021-11-09 08:59:16,643 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 228 transitions, 804 flow [2021-11-09 08:59:16,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 172.68421052631578) internal successors, (3281), 19 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:16,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 08:59:16,644 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:16,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-09 08:59:16,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 08:59:16,845 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 08:59:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1924775102, now seen corresponding path program 8 times [2021-11-09 08:59:16,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:59:16,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986023380] [2021-11-09 08:59:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:16,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:59:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:24,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:59:24,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986023380] [2021-11-09 08:59:24,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986023380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:24,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362118956] [2021-11-09 08:59:24,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:59:24,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:59:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:59:24,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:59:24,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 08:59:25,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:59:25,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:59:25,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-09 08:59:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:33,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 08:59:35,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:59:35,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:59:35,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 08:59:50,172 INFO L354 Elim1Store]: treesize reduction 464, result has 31.9 percent of original size [2021-11-09 08:59:50,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 191 treesize of output 287 [2021-11-09 08:59:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:50,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362118956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:50,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:59:50,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 70] total 134 [2021-11-09 08:59:50,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703777237] [2021-11-09 08:59:50,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-11-09 08:59:50,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-11-09 08:59:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1064, Invalid=16756, Unknown=2, NotChecked=0, Total=17822 [2021-11-09 08:59:50,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 230 [2021-11-09 08:59:50,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 228 transitions, 804 flow. Second operand has 134 states, 134 states have (on average 73.35820895522389) internal successors, (9830), 134 states have internal predecessors, (9830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:50,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 08:59:50,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 230 [2021-11-09 08:59:50,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:00:37,921 INFO L129 PetriNetUnfolder]: 67/955 cut-off events. [2021-11-09 09:00:37,921 INFO L130 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2021-11-09 09:00:37,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 955 events. 67/955 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3864 event pairs, 8 based on Foata normal form. 5/910 useless extension candidates. Maximal degree in co-relation 1967. Up to 85 conditions per place. [2021-11-09 09:00:37,931 INFO L132 encePairwiseOnDemand]: 164/230 looper letters, 232 selfloop transitions, 94 changer transitions 68/459 dead transitions. [2021-11-09 09:00:37,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 459 transitions, 2441 flow [2021-11-09 09:00:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-09 09:00:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-11-09 09:00:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 8184 transitions. [2021-11-09 09:00:37,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3234782608695652 [2021-11-09 09:00:37,949 INFO L72 ComplementDD]: Start complementDD. Operand 110 states and 8184 transitions. [2021-11-09 09:00:37,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 8184 transitions. [2021-11-09 09:00:37,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:00:37,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 110 states and 8184 transitions. [2021-11-09 09:00:37,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 111 states, 110 states have (on average 74.4) internal successors, (8184), 110 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:00:37,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 111 states, 111 states have (on average 230.0) internal successors, (25530), 111 states have internal predecessors, (25530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:00:38,003 INFO L81 ComplementDD]: Finished complementDD. Result has 111 states, 111 states have (on average 230.0) internal successors, (25530), 111 states have internal predecessors, (25530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:00:38,003 INFO L186 Difference]: Start difference. First operand has 321 places, 228 transitions, 804 flow. Second operand 110 states and 8184 transitions. [2021-11-09 09:00:38,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 459 transitions, 2441 flow [2021-11-09 09:00:38,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 459 transitions, 2221 flow, removed 58 selfloop flow, removed 24 redundant places. [2021-11-09 09:00:38,024 INFO L242 Difference]: Finished difference. Result has 462 places, 299 transitions, 1417 flow [2021-11-09 09:00:38,025 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=1417, PETRI_PLACES=462, PETRI_TRANSITIONS=299} [2021-11-09 09:00:38,025 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 254 predicate places. [2021-11-09 09:00:38,025 INFO L470 AbstractCegarLoop]: Abstraction has has 462 places, 299 transitions, 1417 flow [2021-11-09 09:00:38,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 73.35820895522389) internal successors, (9830), 134 states have internal predecessors, (9830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:00:38,027 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:00:38,028 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:38,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:38,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:00:38,257 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 09:00:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1214268288, now seen corresponding path program 9 times [2021-11-09 09:00:38,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:00:38,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757495658] [2021-11-09 09:00:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:38,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:00:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:01:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:01:04,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:01:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757495658] [2021-11-09 09:01:04,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757495658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:01:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821819922] [2021-11-09 09:01:04,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:01:04,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:01:04,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:01:04,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:01:04,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:01:07,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:01:07,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:01:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-09 09:01:07,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:01:13,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-09 09:01:15,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:01:15,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:01:16,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-09 09:01:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-09 09:01:32,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821819922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:01:32,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:01:32,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 46] total 121 [2021-11-09 09:01:32,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091173723] [2021-11-09 09:01:32,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-11-09 09:01:32,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:01:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-11-09 09:01:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=13747, Unknown=3, NotChecked=0, Total=14520 [2021-11-09 09:01:32,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 230 [2021-11-09 09:01:32,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 299 transitions, 1417 flow. Second operand has 121 states, 121 states have (on average 58.81818181818182) internal successors, (7117), 121 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:01:32,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:01:32,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 230 [2021-11-09 09:01:32,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:04:12,546 INFO L129 PetriNetUnfolder]: 186/1860 cut-off events. [2021-11-09 09:04:12,547 INFO L130 PetriNetUnfolder]: For 1194/1194 co-relation queries the response was YES. [2021-11-09 09:04:12,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 1860 events. 186/1860 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11458 event pairs, 8 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 4390. Up to 108 conditions per place. [2021-11-09 09:04:12,569 INFO L132 encePairwiseOnDemand]: 163/230 looper letters, 301 selfloop transitions, 208 changer transitions 215/774 dead transitions. [2021-11-09 09:04:12,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 774 transitions, 4619 flow [2021-11-09 09:04:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-11-09 09:04:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2021-11-09 09:04:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 11233 transitions. [2021-11-09 09:04:12,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.25840809753853233 [2021-11-09 09:04:12,593 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 11233 transitions. [2021-11-09 09:04:12,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 11233 transitions. [2021-11-09 09:04:12,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:04:12,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 11233 transitions. [2021-11-09 09:04:12,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 59.43386243386244) internal successors, (11233), 189 states have internal predecessors, (11233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:04:12,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 230.0) internal successors, (43700), 190 states have internal predecessors, (43700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:04:12,669 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 230.0) internal successors, (43700), 190 states have internal predecessors, (43700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:04:12,669 INFO L186 Difference]: Start difference. First operand has 462 places, 299 transitions, 1417 flow. Second operand 189 states and 11233 transitions. [2021-11-09 09:04:12,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 774 transitions, 4619 flow [2021-11-09 09:04:12,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 774 transitions, 4331 flow, removed 118 selfloop flow, removed 40 redundant places. [2021-11-09 09:04:12,721 INFO L242 Difference]: Finished difference. Result has 658 places, 402 transitions, 2558 flow [2021-11-09 09:04:12,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=2558, PETRI_PLACES=658, PETRI_TRANSITIONS=402} [2021-11-09 09:04:12,722 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 450 predicate places. [2021-11-09 09:04:12,722 INFO L470 AbstractCegarLoop]: Abstraction has has 658 places, 402 transitions, 2558 flow [2021-11-09 09:04:12,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 58.81818181818182) internal successors, (7117), 121 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:04:12,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:04:12,725 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:04:12,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:04:12,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:04:12,945 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 09:04:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:04:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1585876487, now seen corresponding path program 10 times [2021-11-09 09:04:12,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:04:12,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890980646] [2021-11-09 09:04:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:04:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:04:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:04:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:04:23,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:04:23,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890980646] [2021-11-09 09:04:23,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890980646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:04:23,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606902392] [2021-11-09 09:04:23,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:04:23,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:04:23,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:04:23,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:04:23,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:04:27,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:04:27,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:04:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 173 conjunts are in the unsatisfiable core [2021-11-09 09:04:27,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:04:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 09:04:43,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606902392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:04:43,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:04:43,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 58] total 123 [2021-11-09 09:04:43,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159640339] [2021-11-09 09:04:43,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-11-09 09:04:43,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:04:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-11-09 09:04:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=938, Invalid=14068, Unknown=0, NotChecked=0, Total=15006 [2021-11-09 09:04:43,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-11-09 09:04:43,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 402 transitions, 2558 flow. Second operand has 123 states, 123 states have (on average 85.4959349593496) internal successors, (10516), 123 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:04:43,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:04:43,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-11-09 09:04:43,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:05:06,399 INFO L129 PetriNetUnfolder]: 103/1485 cut-off events. [2021-11-09 09:05:06,399 INFO L130 PetriNetUnfolder]: For 2046/2046 co-relation queries the response was YES. [2021-11-09 09:05:06,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4088 conditions, 1485 events. 103/1485 cut-off events. For 2046/2046 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7925 event pairs, 8 based on Foata normal form. 5/1418 useless extension candidates. Maximal degree in co-relation 3912. Up to 240 conditions per place. [2021-11-09 09:05:06,424 INFO L132 encePairwiseOnDemand]: 167/230 looper letters, 316 selfloop transitions, 122 changer transitions 121/630 dead transitions. [2021-11-09 09:05:06,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 630 transitions, 4811 flow [2021-11-09 09:05:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-11-09 09:05:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-11-09 09:05:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 12978 transitions. [2021-11-09 09:05:06,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3736826950763029 [2021-11-09 09:05:06,443 INFO L72 ComplementDD]: Start complementDD. Operand 151 states and 12978 transitions. [2021-11-09 09:05:06,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 12978 transitions. [2021-11-09 09:05:06,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:05:06,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 151 states and 12978 transitions. [2021-11-09 09:05:06,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 152 states, 151 states have (on average 85.94701986754967) internal successors, (12978), 151 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:05:06,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 152 states, 152 states have (on average 230.0) internal successors, (34960), 152 states have internal predecessors, (34960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:05:06,520 INFO L81 ComplementDD]: Finished complementDD. Result has 152 states, 152 states have (on average 230.0) internal successors, (34960), 152 states have internal predecessors, (34960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:05:06,520 INFO L186 Difference]: Start difference. First operand has 658 places, 402 transitions, 2558 flow. Second operand 151 states and 12978 transitions. [2021-11-09 09:05:06,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 630 transitions, 4811 flow [2021-11-09 09:05:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 630 transitions, 3945 flow, removed 334 selfloop flow, removed 92 redundant places. [2021-11-09 09:05:06,607 INFO L242 Difference]: Finished difference. Result has 714 places, 424 transitions, 2520 flow [2021-11-09 09:05:06,608 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=151, PETRI_FLOW=2520, PETRI_PLACES=714, PETRI_TRANSITIONS=424} [2021-11-09 09:05:06,609 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 506 predicate places. [2021-11-09 09:05:06,609 INFO L470 AbstractCegarLoop]: Abstraction has has 714 places, 424 transitions, 2520 flow [2021-11-09 09:05:06,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 85.4959349593496) internal successors, (10516), 123 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:05:06,611 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:05:06,612 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:05:06,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-09 09:05:06,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:05:06,825 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 09:05:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:05:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1469030795, now seen corresponding path program 11 times [2021-11-09 09:05:06,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:05:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985494337] [2021-11-09 09:05:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:05:06,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:05:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:05:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:05:46,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:05:46,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985494337] [2021-11-09 09:05:46,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985494337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:05:46,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493231719] [2021-11-09 09:05:46,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:05:46,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:05:46,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:05:46,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:05:46,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:05:50,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 09:05:50,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:05:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-09 09:05:50,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:06:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 7 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-09 09:06:10,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493231719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:06:10,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:06:10,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 50] total 118 [2021-11-09 09:06:10,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736113040] [2021-11-09 09:06:10,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-09 09:06:10,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:06:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-09 09:06:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=13168, Unknown=1, NotChecked=0, Total=13806 [2021-11-09 09:06:10,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-11-09 09:06:10,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 424 transitions, 2520 flow. Second operand has 118 states, 118 states have (on average 85.67796610169492) internal successors, (10110), 118 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:06:10,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:06:10,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-11-09 09:06:10,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-09 09:07:38,166 INFO L129 PetriNetUnfolder]: 117/1653 cut-off events. [2021-11-09 09:07:38,166 INFO L130 PetriNetUnfolder]: For 1864/1864 co-relation queries the response was YES. [2021-11-09 09:07:38,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4349 conditions, 1653 events. 117/1653 cut-off events. For 1864/1864 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9225 event pairs, 8 based on Foata normal form. 2/1580 useless extension candidates. Maximal degree in co-relation 4169. Up to 93 conditions per place. [2021-11-09 09:07:38,193 INFO L132 encePairwiseOnDemand]: 168/230 looper letters, 229 selfloop transitions, 136 changer transitions 288/724 dead transitions. [2021-11-09 09:07:38,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 866 places, 724 transitions, 5123 flow [2021-11-09 09:07:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2021-11-09 09:07:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2021-11-09 09:07:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 16747 transitions. [2021-11-09 09:07:38,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37340022296544034 [2021-11-09 09:07:38,225 INFO L72 ComplementDD]: Start complementDD. Operand 195 states and 16747 transitions. [2021-11-09 09:07:38,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 16747 transitions. [2021-11-09 09:07:38,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-09 09:07:38,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 195 states and 16747 transitions. [2021-11-09 09:07:38,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 196 states, 195 states have (on average 85.88205128205128) internal successors, (16747), 195 states have internal predecessors, (16747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:07:38,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 196 states, 196 states have (on average 230.0) internal successors, (45080), 196 states have internal predecessors, (45080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:07:38,312 INFO L81 ComplementDD]: Finished complementDD. Result has 196 states, 196 states have (on average 230.0) internal successors, (45080), 196 states have internal predecessors, (45080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:07:38,312 INFO L186 Difference]: Start difference. First operand has 714 places, 424 transitions, 2520 flow. Second operand 195 states and 16747 transitions. [2021-11-09 09:07:38,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 866 places, 724 transitions, 5123 flow [2021-11-09 09:07:38,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 724 transitions, 4639 flow, removed 144 selfloop flow, removed 118 redundant places. [2021-11-09 09:07:38,394 INFO L242 Difference]: Finished difference. Result has 802 places, 363 transitions, 2201 flow [2021-11-09 09:07:38,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=195, PETRI_FLOW=2201, PETRI_PLACES=802, PETRI_TRANSITIONS=363} [2021-11-09 09:07:38,395 INFO L334 CegarLoopForPetriNet]: 208 programPoint places, 594 predicate places. [2021-11-09 09:07:38,396 INFO L470 AbstractCegarLoop]: Abstraction has has 802 places, 363 transitions, 2201 flow [2021-11-09 09:07:38,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 85.67796610169492) internal successors, (10110), 118 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:07:38,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-09 09:07:38,398 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:07:38,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:07:38,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:07:38,614 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-09 09:07:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:07:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash 887882616, now seen corresponding path program 12 times [2021-11-09 09:07:38,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:07:38,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416635580] [2021-11-09 09:07:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:07:38,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:07:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:08:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:08:05,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:08:05,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416635580] [2021-11-09 09:08:05,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416635580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:08:05,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638492960] [2021-11-09 09:08:05,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:08:05,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:08:05,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:08:05,928 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:08:05,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e29377-0032-4ecb-82a4-6c858410a226/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:08:10,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-09 09:08:10,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:08:10,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 159 conjunts are in the unsatisfiable core [2021-11-09 09:08:10,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:08:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 1 proven. 149 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:08:29,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638492960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:08:29,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:08:29,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 42] total 112 [2021-11-09 09:08:29,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661371962] [2021-11-09 09:08:29,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-09 09:08:29,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:08:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-09 09:08:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=11842, Unknown=3, NotChecked=0, Total=12432 [2021-11-09 09:08:29,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2021-11-09 09:08:29,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 363 transitions, 2201 flow. Second operand has 112 states, 112 states have (on average 85.91071428571429) internal successors, (9622), 112 states have internal predecessors, (9622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:08:29,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-09 09:08:29,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2021-11-09 09:08:29,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand