./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:30:40,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:30:40,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:30:40,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:30:40,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:30:41,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:30:41,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:30:41,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:30:41,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:30:41,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:30:41,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:30:41,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:30:41,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:30:41,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:30:41,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:30:41,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:30:41,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:30:41,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:30:41,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:30:41,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:30:41,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:30:41,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:30:41,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:30:41,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:30:41,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:30:41,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:30:41,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:30:41,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:30:41,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:30:41,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:30:41,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:30:41,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:30:41,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:30:41,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:30:41,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:30:41,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:30:41,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:30:41,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:30:41,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:30:41,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:30:41,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:30:41,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:30:41,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:30:41,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:30:41,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:30:41,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:30:41,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:30:41,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:30:41,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:30:41,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:30:41,115 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:30:41,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:30:41,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:30:41,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:30:41,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:30:41,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:30:41,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:30:41,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:30:41,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:30:41,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:30:41,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:30:41,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:30:41,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:30:41,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:30:41,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:30:41,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:30:41,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:41,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:30:41,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:30:41,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:30:41,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:30:41,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:30:41,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:30:41,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:30:41,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:30:41,123 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_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-11-20 09:30:41,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:30:41,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:30:41,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:30:41,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:30:41,461 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:30:41,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-20 09:30:44,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:30:44,879 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:30:44,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-20 09:30:44,893 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/data/aeb3db6ed/908ea7bb526f4bfd8b82b90b984b1e7f/FLAG1e36cafc5 [2022-11-20 09:30:44,908 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/data/aeb3db6ed/908ea7bb526f4bfd8b82b90b984b1e7f [2022-11-20 09:30:44,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:30:44,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:30:44,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:44,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:30:44,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:30:44,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:44" (1/1) ... [2022-11-20 09:30:44,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125d89af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:44, skipping insertion in model container [2022-11-20 09:30:44,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:30:44" (1/1) ... [2022-11-20 09:30:44,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:30:44,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:30:45,145 WARN L237 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_c75d1c81-0bd4-430e-a2ed-673c29b06892/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-20 09:30:45,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:45,325 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:30:45,337 WARN L237 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_c75d1c81-0bd4-430e-a2ed-673c29b06892/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-20 09:30:45,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:30:45,402 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:30:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45 WrapperNode [2022-11-20 09:30:45,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:30:45,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:45,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:30:45,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:30:45,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,486 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-11-20 09:30:45,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:30:45,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:30:45,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:30:45,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:30:45,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:30:45,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:30:45,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:30:45,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:30:45,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (1/1) ... [2022-11-20 09:30:45,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:30:45,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:45,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:30:45,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c75d1c81-0bd4-430e-a2ed-673c29b06892/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:30:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:30:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-20 09:30:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-20 09:30:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:30:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:30:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:30:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:30:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:30:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:30:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:30:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:30:45,638 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:30:45,796 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:30:45,798 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:30:46,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:30:46,134 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:30:46,134 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:30:46,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:46 BoogieIcfgContainer [2022-11-20 09:30:46,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:30:46,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:30:46,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:30:46,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:30:46,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:30:44" (1/3) ... [2022-11-20 09:30:46,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6059af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:46, skipping insertion in model container [2022-11-20 09:30:46,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:30:45" (2/3) ... [2022-11-20 09:30:46,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6059af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:30:46, skipping insertion in model container [2022-11-20 09:30:46,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:30:46" (3/3) ... [2022-11-20 09:30:46,147 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-20 09:30:46,156 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:30:46,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:30:46,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:30:46,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:30:46,288 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 09:30:46,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 289 flow [2022-11-20 09:30:46,424 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2022-11-20 09:30:46,424 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:30:46,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 141 events. 10/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 226 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-20 09:30:46,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 289 flow [2022-11-20 09:30:46,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 141 transitions, 285 flow [2022-11-20 09:30:46,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:30:46,460 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40b6b710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:30:46,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 09:30:46,485 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2022-11-20 09:30:46,486 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:30:46,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:46,487 INFO L209 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] [2022-11-20 09:30:46,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:30:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1865521660, now seen corresponding path program 1 times [2022-11-20 09:30:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:46,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307108332] [2022-11-20 09:30:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307108332] [2022-11-20 09:30:46,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307108332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:46,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:46,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:30:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681942190] [2022-11-20 09:30:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:46,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:30:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:30:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:30:46,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 142 [2022-11-20 09:30:46,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 141 transitions, 285 flow. Second operand has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:46,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 142 [2022-11-20 09:30:46,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:46,883 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2022-11-20 09:30:46,884 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:30:46,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 5/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 5/130 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-20 09:30:46,887 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 1 selfloop transitions, 0 changer transitions 0/131 dead transitions. [2022-11-20 09:30:46,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 267 flow [2022-11-20 09:30:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:30:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 09:30:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 273 transitions. [2022-11-20 09:30:46,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9612676056338029 [2022-11-20 09:30:46,908 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 273 transitions. [2022-11-20 09:30:46,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 273 transitions. [2022-11-20 09:30:46,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:46,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 273 transitions. [2022-11-20 09:30:46,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,929 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,931 INFO L175 Difference]: Start difference. First operand has 135 places, 141 transitions, 285 flow. Second operand 2 states and 273 transitions. [2022-11-20 09:30:46,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 267 flow [2022-11-20 09:30:46,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:30:46,938 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 264 flow [2022-11-20 09:30:46,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=264, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2022-11-20 09:30:46,947 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2022-11-20 09:30:46,947 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 264 flow [2022-11-20 09:30:46,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:46,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:46,948 INFO L209 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] [2022-11-20 09:30:46,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:30:46,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:30:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 326788120, now seen corresponding path program 1 times [2022-11-20 09:30:46,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:46,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501503642] [2022-11-20 09:30:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:47,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501503642] [2022-11-20 09:30:47,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501503642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:47,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:47,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:30:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883885953] [2022-11-20 09:30:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:47,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:30:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:30:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:30:47,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2022-11-20 09:30:47,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:47,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:47,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2022-11-20 09:30:47,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:48,362 INFO L130 PetriNetUnfolder]: 313/1626 cut-off events. [2022-11-20 09:30:48,362 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:30:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1626 events. 313/1626 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12238 event pairs, 43 based on Foata normal form. 0/1523 useless extension candidates. Maximal degree in co-relation 2223. Up to 143 conditions per place. [2022-11-20 09:30:48,387 INFO L137 encePairwiseOnDemand]: 125/142 looper letters, 118 selfloop transitions, 46 changer transitions 0/255 dead transitions. [2022-11-20 09:30:48,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 255 transitions, 840 flow [2022-11-20 09:30:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:30:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 09:30:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2140 transitions. [2022-11-20 09:30:48,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7176391683433937 [2022-11-20 09:30:48,394 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2140 transitions. [2022-11-20 09:30:48,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2140 transitions. [2022-11-20 09:30:48,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:48,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2140 transitions. [2022-11-20 09:30:48,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 101.9047619047619) internal successors, (2140), 21 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:48,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 142.0) internal successors, (3124), 22 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:48,414 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 142.0) internal successors, (3124), 22 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:48,414 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 264 flow. Second operand 21 states and 2140 transitions. [2022-11-20 09:30:48,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 255 transitions, 840 flow [2022-11-20 09:30:48,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 255 transitions, 840 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:30:48,424 INFO L231 Difference]: Finished difference. Result has 164 places, 184 transitions, 606 flow [2022-11-20 09:30:48,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=606, PETRI_PLACES=164, PETRI_TRANSITIONS=184} [2022-11-20 09:30:48,425 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-11-20 09:30:48,425 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 184 transitions, 606 flow [2022-11-20 09:30:48,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:48,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:48,427 INFO L209 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] [2022-11-20 09:30:48,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:30:48,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:30:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1938685600, now seen corresponding path program 1 times [2022-11-20 09:30:48,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:48,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723652441] [2022-11-20 09:30:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:49,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723652441] [2022-11-20 09:30:49,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723652441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:49,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:49,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:30:49,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911212465] [2022-11-20 09:30:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:30:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:30:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:30:49,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 142 [2022-11-20 09:30:49,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 184 transitions, 606 flow. Second operand has 15 states, 15 states have (on average 84.2) internal successors, (1263), 15 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:49,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:49,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 142 [2022-11-20 09:30:49,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:51,502 INFO L130 PetriNetUnfolder]: 1010/3868 cut-off events. [2022-11-20 09:30:51,502 INFO L131 PetriNetUnfolder]: For 1104/1104 co-relation queries the response was YES. [2022-11-20 09:30:51,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 3868 events. 1010/3868 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33768 event pairs, 164 based on Foata normal form. 12/3635 useless extension candidates. Maximal degree in co-relation 6873. Up to 625 conditions per place. [2022-11-20 09:30:51,535 INFO L137 encePairwiseOnDemand]: 120/142 looper letters, 264 selfloop transitions, 112 changer transitions 0/466 dead transitions. [2022-11-20 09:30:51,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 466 transitions, 2384 flow [2022-11-20 09:30:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 09:30:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 09:30:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3493 transitions. [2022-11-20 09:30:51,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6307331166486096 [2022-11-20 09:30:51,544 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3493 transitions. [2022-11-20 09:30:51,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3493 transitions. [2022-11-20 09:30:51,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:51,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3493 transitions. [2022-11-20 09:30:51,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 89.56410256410257) internal successors, (3493), 39 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:51,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 142.0) internal successors, (5680), 40 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:51,567 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 142.0) internal successors, (5680), 40 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:51,568 INFO L175 Difference]: Start difference. First operand has 164 places, 184 transitions, 606 flow. Second operand 39 states and 3493 transitions. [2022-11-20 09:30:51,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 466 transitions, 2384 flow [2022-11-20 09:30:51,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 466 transitions, 2384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:30:51,667 INFO L231 Difference]: Finished difference. Result has 226 places, 291 transitions, 1530 flow [2022-11-20 09:30:51,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1530, PETRI_PLACES=226, PETRI_TRANSITIONS=291} [2022-11-20 09:30:51,668 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 91 predicate places. [2022-11-20 09:30:51,668 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 291 transitions, 1530 flow [2022-11-20 09:30:51,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.2) internal successors, (1263), 15 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:51,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:51,669 INFO L209 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] [2022-11-20 09:30:51,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:30:51,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:30:51,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1702516615, now seen corresponding path program 1 times [2022-11-20 09:30:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:51,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16755475] [2022-11-20 09:30:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:52,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16755475] [2022-11-20 09:30:52,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16755475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:30:52,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:30:52,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:30:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751196037] [2022-11-20 09:30:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:30:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:30:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:30:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:30:52,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 142 [2022-11-20 09:30:52,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 291 transitions, 1530 flow. Second operand has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:52,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:52,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 142 [2022-11-20 09:30:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:08,633 INFO L130 PetriNetUnfolder]: 13737/40047 cut-off events. [2022-11-20 09:31:08,634 INFO L131 PetriNetUnfolder]: For 50721/50981 co-relation queries the response was YES. [2022-11-20 09:31:08,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96820 conditions, 40047 events. 13737/40047 cut-off events. For 50721/50981 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 450099 event pairs, 894 based on Foata normal form. 48/38287 useless extension candidates. Maximal degree in co-relation 96778. Up to 3237 conditions per place. [2022-11-20 09:31:09,114 INFO L137 encePairwiseOnDemand]: 112/142 looper letters, 1591 selfloop transitions, 1186 changer transitions 0/2873 dead transitions. [2022-11-20 09:31:09,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 2873 transitions, 23018 flow [2022-11-20 09:31:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-20 09:31:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-20 09:31:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 11803 transitions. [2022-11-20 09:31:09,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6157016171100678 [2022-11-20 09:31:09,137 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 11803 transitions. [2022-11-20 09:31:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 11803 transitions. [2022-11-20 09:31:09,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:09,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 11803 transitions. [2022-11-20 09:31:09,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 87.42962962962963) internal successors, (11803), 135 states have internal predecessors, (11803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:09,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 142.0) internal successors, (19312), 136 states have internal predecessors, (19312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:09,211 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 142.0) internal successors, (19312), 136 states have internal predecessors, (19312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:09,211 INFO L175 Difference]: Start difference. First operand has 226 places, 291 transitions, 1530 flow. Second operand 135 states and 11803 transitions. [2022-11-20 09:31:09,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 2873 transitions, 23018 flow [2022-11-20 09:31:09,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 2873 transitions, 22853 flow, removed 79 selfloop flow, removed 4 redundant places. [2022-11-20 09:31:09,990 INFO L231 Difference]: Finished difference. Result has 479 places, 1647 transitions, 16316 flow [2022-11-20 09:31:09,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=16316, PETRI_PLACES=479, PETRI_TRANSITIONS=1647} [2022-11-20 09:31:09,993 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 344 predicate places. [2022-11-20 09:31:09,993 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 1647 transitions, 16316 flow [2022-11-20 09:31:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:10,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:10,011 INFO L209 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] [2022-11-20 09:31:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:31:10,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:31:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -233606861, now seen corresponding path program 2 times [2022-11-20 09:31:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693313590] [2022-11-20 09:31:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:10,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693313590] [2022-11-20 09:31:10,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693313590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:10,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:10,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 09:31:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659790171] [2022-11-20 09:31:10,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:31:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:31:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:31:10,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 142 [2022-11-20 09:31:10,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1647 transitions, 16316 flow. Second operand has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:10,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:10,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 142 [2022-11-20 09:31:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:46,778 INFO L130 PetriNetUnfolder]: 21762/62691 cut-off events. [2022-11-20 09:31:46,778 INFO L131 PetriNetUnfolder]: For 1090142/1090791 co-relation queries the response was YES. [2022-11-20 09:31:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302063 conditions, 62691 events. 21762/62691 cut-off events. For 1090142/1090791 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 718867 event pairs, 2170 based on Foata normal form. 359/61623 useless extension candidates. Maximal degree in co-relation 301899. Up to 6667 conditions per place. [2022-11-20 09:31:48,848 INFO L137 encePairwiseOnDemand]: 113/142 looper letters, 2753 selfloop transitions, 2255 changer transitions 0/5104 dead transitions. [2022-11-20 09:31:48,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 5104 transitions, 57119 flow [2022-11-20 09:31:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-11-20 09:31:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-11-20 09:31:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 8618 transitions. [2022-11-20 09:31:48,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6130317257077821 [2022-11-20 09:31:48,876 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 8618 transitions. [2022-11-20 09:31:48,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 8618 transitions. [2022-11-20 09:31:48,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:48,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 8618 transitions. [2022-11-20 09:31:48,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 87.05050505050505) internal successors, (8618), 99 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 142.0) internal successors, (14200), 100 states have internal predecessors, (14200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,933 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 142.0) internal successors, (14200), 100 states have internal predecessors, (14200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:31:48,933 INFO L175 Difference]: Start difference. First operand has 479 places, 1647 transitions, 16316 flow. Second operand 99 states and 8618 transitions. [2022-11-20 09:31:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 5104 transitions, 57119 flow [2022-11-20 09:32:03,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 5104 transitions, 55753 flow, removed 683 selfloop flow, removed 0 redundant places. [2022-11-20 09:32:03,347 INFO L231 Difference]: Finished difference. Result has 658 places, 3046 transitions, 40688 flow [2022-11-20 09:32:03,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=15786, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=887, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=40688, PETRI_PLACES=658, PETRI_TRANSITIONS=3046} [2022-11-20 09:32:03,349 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 523 predicate places. [2022-11-20 09:32:03,349 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 3046 transitions, 40688 flow [2022-11-20 09:32:03,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:03,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:03,350 INFO L209 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] [2022-11-20 09:32:03,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:32:03,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 09:32:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1765419519, now seen corresponding path program 1 times [2022-11-20 09:32:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354408535] [2022-11-20 09:32:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354408535] [2022-11-20 09:32:03,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354408535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:03,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:03,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:32:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340972496] [2022-11-20 09:32:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:03,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:03,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:32:03,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 3046 transitions, 40688 flow. Second operand has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 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) [2022-11-20 09:32:03,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:03,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:32:03,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand