./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/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_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/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_d2ea42bf-92db-47cc-81a5-64075a6d548e/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 b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 --- 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 11:47:02,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:47:02,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:47:02,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:47:02,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:47:02,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:47:02,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:47:02,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:47:02,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:47:02,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:47:02,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:47:02,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:47:02,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:47:02,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:47:02,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:47:02,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:47:02,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:47:02,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:47:02,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:47:02,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:47:02,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:47:02,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:47:02,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:47:02,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:47:02,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:47:02,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:47:02,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:47:02,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:47:02,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:47:02,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:47:02,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:47:02,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:47:02,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:47:02,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:47:02,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:47:02,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:47:02,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:47:02,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:47:02,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:47:02,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:47:02,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:47:02,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:47:02,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:47:02,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:47:02,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:47:02,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:47:02,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:47:02,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:47:02,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:47:02,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:47:02,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:47:02,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:47:02,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:47:02,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:47:02,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:47:02,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:47:02,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:47:02,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:47:02,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:47:02,966 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:47:02,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:47:02,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:47:02,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:47:02,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:47:02,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:47:02,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:47:02,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:02,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:47:02,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:47:02,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:47:02,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:47:02,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:47:02,969 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:47:02,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:47:02,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:47:02,970 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_d2ea42bf-92db-47cc-81a5-64075a6d548e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 [2022-11-20 11:47:03,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:47:03,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:47:03,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:47:03,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:47:03,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:47:03,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:47:06,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:47:06,624 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:47:06,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:47:06,661 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/data/bb742af73/67b358f2e08846e19b3948d26abec9dc/FLAG1b1d7e197 [2022-11-20 11:47:06,676 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/data/bb742af73/67b358f2e08846e19b3948d26abec9dc [2022-11-20 11:47:06,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:47:06,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:47:06,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:06,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:47:06,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:47:06,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:06" (1/1) ... [2022-11-20 11:47:06,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72013faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:06, skipping insertion in model container [2022-11-20 11:47:06,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:06" (1/1) ... [2022-11-20 11:47:06,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:47:06,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:47:06,972 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_d2ea42bf-92db-47cc-81a5-64075a6d548e/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 11:47:07,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:07,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:47:07,276 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_d2ea42bf-92db-47cc-81a5-64075a6d548e/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-20 11:47:07,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:07,376 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:47:07,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07 WrapperNode [2022-11-20 11:47:07,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:07,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:07,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:47:07,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:47:07,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,431 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-11-20 11:47:07,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:07,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:47:07,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:47:07,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:47:07,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:47:07,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:47:07,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:47:07,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:47:07,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (1/1) ... [2022-11-20 11:47:07,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:07,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:07,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:47:07,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ea42bf-92db-47cc-81a5-64075a6d548e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:47:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:47:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:47:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:47:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:47:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:47:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 11:47:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 11:47:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 11:47:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 11:47:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-20 11:47:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-20 11:47:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-20 11:47:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-20 11:47:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:47:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:47:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:47:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:47:07,602 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 11:47:07,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:47:07,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:47:08,243 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:47:08,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:47:08,432 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:47:08,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:08 BoogieIcfgContainer [2022-11-20 11:47:08,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:47:08,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:47:08,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:47:08,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:47:08,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:47:06" (1/3) ... [2022-11-20 11:47:08,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657254c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:08, skipping insertion in model container [2022-11-20 11:47:08,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:07" (2/3) ... [2022-11-20 11:47:08,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657254c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:08, skipping insertion in model container [2022-11-20 11:47:08,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:08" (3/3) ... [2022-11-20 11:47:08,449 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2022-11-20 11:47:08,458 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:47:08,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:47:08,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:47:08,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:47:08,552 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:47:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-11-20 11:47:08,719 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-11-20 11:47:08,720 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:47:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-20 11:47:08,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-11-20 11:47:08,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-11-20 11:47:08,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:08,755 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;@159bf373, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:08,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:47:08,765 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2022-11-20 11:47:08,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:47:08,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:08,766 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] [2022-11-20 11:47:08,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1112318224, now seen corresponding path program 1 times [2022-11-20 11:47:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024854813] [2022-11-20 11:47:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:09,440 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 11:47:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:09,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024854813] [2022-11-20 11:47:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024854813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:09,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:09,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090432439] [2022-11-20 11:47:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:09,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:09,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:09,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-11-20 11:47:09,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 11:47:09,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:09,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-11-20 11:47:09,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:09,768 INFO L130 PetriNetUnfolder]: 162/617 cut-off events. [2022-11-20 11:47:09,768 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 11:47:09,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 617 events. 162/617 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3377 event pairs, 132 based on Foata normal form. 36/609 useless extension candidates. Maximal degree in co-relation 867. Up to 191 conditions per place. [2022-11-20 11:47:09,779 INFO L137 encePairwiseOnDemand]: 130/135 looper letters, 18 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-11-20 11:47:09,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 331 flow [2022-11-20 11:47:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-11-20 11:47:09,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9432098765432099 [2022-11-20 11:47:09,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-11-20 11:47:09,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-11-20 11:47:09,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:09,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-11-20 11:47:09,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 11:47:09,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 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 11:47:09,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 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 11:47:09,814 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 3 states and 382 transitions. [2022-11-20 11:47:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 331 flow [2022-11-20 11:47:09,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 324 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:09,823 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 266 flow [2022-11-20 11:47:09,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-11-20 11:47:09,830 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2022-11-20 11:47:09,831 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 266 flow [2022-11-20 11:47:09,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 11:47:09,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:09,832 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, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:09,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:47:09,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1284915870, now seen corresponding path program 1 times [2022-11-20 11:47:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008015738] [2022-11-20 11:47:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:10,438 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 11:47:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:10,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008015738] [2022-11-20 11:47:10,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008015738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:10,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:10,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:47:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635574383] [2022-11-20 11:47:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:10,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:47:10,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:47:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:10,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-11-20 11:47:10,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 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 11:47:10,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:10,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-11-20 11:47:10,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:15,724 INFO L130 PetriNetUnfolder]: 11035/24755 cut-off events. [2022-11-20 11:47:15,724 INFO L131 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2022-11-20 11:47:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41074 conditions, 24755 events. 11035/24755 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 252776 event pairs, 1675 based on Foata normal form. 0/24064 useless extension candidates. Maximal degree in co-relation 41016. Up to 5250 conditions per place. [2022-11-20 11:47:15,933 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 47 selfloop transitions, 9 changer transitions 119/262 dead transitions. [2022-11-20 11:47:15,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 262 transitions, 892 flow [2022-11-20 11:47:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:47:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:47:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1517 transitions. [2022-11-20 11:47:15,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8643874643874644 [2022-11-20 11:47:15,940 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1517 transitions. [2022-11-20 11:47:15,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1517 transitions. [2022-11-20 11:47:15,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:15,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1517 transitions. [2022-11-20 11:47:15,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.6923076923077) internal successors, (1517), 13 states have internal predecessors, (1517), 0 states have call successors, (0), 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 11:47:15,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:15,953 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:15,953 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 266 flow. Second operand 13 states and 1517 transitions. [2022-11-20 11:47:15,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 262 transitions, 892 flow [2022-11-20 11:47:15,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 262 transitions, 866 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:15,961 INFO L231 Difference]: Finished difference. Result has 160 places, 121 transitions, 344 flow [2022-11-20 11:47:15,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=160, PETRI_TRANSITIONS=121} [2022-11-20 11:47:15,962 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 18 predicate places. [2022-11-20 11:47:15,962 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 121 transitions, 344 flow [2022-11-20 11:47:15,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 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 11:47:15,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:15,963 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:15,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:47:15,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2133704415, now seen corresponding path program 1 times [2022-11-20 11:47:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:15,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422543874] [2022-11-20 11:47:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,308 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 11:47:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422543874] [2022-11-20 11:47:16,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422543874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225169269] [2022-11-20 11:47:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:16,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-11-20 11:47:16,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 121 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 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 11:47:16,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:16,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-11-20 11:47:16,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:19,055 INFO L130 PetriNetUnfolder]: 6298/11602 cut-off events. [2022-11-20 11:47:19,055 INFO L131 PetriNetUnfolder]: For 18379/18667 co-relation queries the response was YES. [2022-11-20 11:47:19,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32578 conditions, 11602 events. 6298/11602 cut-off events. For 18379/18667 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 95722 event pairs, 2226 based on Foata normal form. 252/11481 useless extension candidates. Maximal degree in co-relation 32511. Up to 5539 conditions per place. [2022-11-20 11:47:19,182 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 27 selfloop transitions, 5 changer transitions 61/191 dead transitions. [2022-11-20 11:47:19,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 191 transitions, 904 flow [2022-11-20 11:47:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:47:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:47:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2022-11-20 11:47:19,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2022-11-20 11:47:19,187 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1065 transitions. [2022-11-20 11:47:19,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1065 transitions. [2022-11-20 11:47:19,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:19,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1065 transitions. [2022-11-20 11:47:19,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.33333333333333) internal successors, (1065), 9 states have internal predecessors, (1065), 0 states have call successors, (0), 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 11:47:19,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 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 11:47:19,197 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 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 11:47:19,197 INFO L175 Difference]: Start difference. First operand has 160 places, 121 transitions, 344 flow. Second operand 9 states and 1065 transitions. [2022-11-20 11:47:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 191 transitions, 904 flow [2022-11-20 11:47:19,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 191 transitions, 890 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 11:47:19,280 INFO L231 Difference]: Finished difference. Result has 149 places, 125 transitions, 431 flow [2022-11-20 11:47:19,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=431, PETRI_PLACES=149, PETRI_TRANSITIONS=125} [2022-11-20 11:47:19,281 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 7 predicate places. [2022-11-20 11:47:19,282 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 125 transitions, 431 flow [2022-11-20 11:47:19,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 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 11:47:19,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:19,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:19,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:47:19,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2081832032, now seen corresponding path program 1 times [2022-11-20 11:47:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:19,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96708425] [2022-11-20 11:47:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:19,641 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 11:47:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96708425] [2022-11-20 11:47:19,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96708425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:19,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:19,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:47:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335203527] [2022-11-20 11:47:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:19,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:19,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:47:19,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-11-20 11:47:19,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 125 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 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 11:47:19,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:19,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-11-20 11:47:19,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:24,989 INFO L130 PetriNetUnfolder]: 18050/31322 cut-off events. [2022-11-20 11:47:24,989 INFO L131 PetriNetUnfolder]: For 28332/35892 co-relation queries the response was YES. [2022-11-20 11:47:25,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72829 conditions, 31322 events. 18050/31322 cut-off events. For 28332/35892 co-relation queries the response was YES. Maximal size of possible extension queue 2012. Compared 281427 event pairs, 1420 based on Foata normal form. 153/29775 useless extension candidates. Maximal degree in co-relation 72756. Up to 9844 conditions per place. [2022-11-20 11:47:25,301 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 93 selfloop transitions, 20 changer transitions 0/214 dead transitions. [2022-11-20 11:47:25,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 214 transitions, 925 flow [2022-11-20 11:47:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:47:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:47:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1187 transitions. [2022-11-20 11:47:25,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792592592592593 [2022-11-20 11:47:25,306 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1187 transitions. [2022-11-20 11:47:25,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1187 transitions. [2022-11-20 11:47:25,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:25,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1187 transitions. [2022-11-20 11:47:25,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 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 11:47:25,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 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 11:47:25,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 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 11:47:25,314 INFO L175 Difference]: Start difference. First operand has 149 places, 125 transitions, 431 flow. Second operand 10 states and 1187 transitions. [2022-11-20 11:47:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 214 transitions, 925 flow [2022-11-20 11:47:25,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 214 transitions, 908 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:25,390 INFO L231 Difference]: Finished difference. Result has 154 places, 143 transitions, 557 flow [2022-11-20 11:47:25,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=557, PETRI_PLACES=154, PETRI_TRANSITIONS=143} [2022-11-20 11:47:25,397 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 12 predicate places. [2022-11-20 11:47:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 143 transitions, 557 flow [2022-11-20 11:47:25,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 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 11:47:25,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:25,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:47:25,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash 862223806, now seen corresponding path program 1 times [2022-11-20 11:47:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545581610] [2022-11-20 11:47:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:25,739 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 11:47:25,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:25,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545581610] [2022-11-20 11:47:25,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545581610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:25,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:25,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:47:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747400713] [2022-11-20 11:47:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:47:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:47:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:25,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-11-20 11:47:25,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 143 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 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 11:47:25,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:25,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-11-20 11:47:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:31,037 INFO L130 PetriNetUnfolder]: 9257/22816 cut-off events. [2022-11-20 11:47:31,037 INFO L131 PetriNetUnfolder]: For 48084/50834 co-relation queries the response was YES. [2022-11-20 11:47:31,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67534 conditions, 22816 events. 9257/22816 cut-off events. For 48084/50834 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 261444 event pairs, 2304 based on Foata normal form. 467/21871 useless extension candidates. Maximal degree in co-relation 67453. Up to 3692 conditions per place. [2022-11-20 11:47:31,385 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 124 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2022-11-20 11:47:31,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 268 transitions, 1645 flow [2022-11-20 11:47:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:47:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:47:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1492 transitions. [2022-11-20 11:47:31,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8501424501424502 [2022-11-20 11:47:31,391 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1492 transitions. [2022-11-20 11:47:31,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1492 transitions. [2022-11-20 11:47:31,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:31,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1492 transitions. [2022-11-20 11:47:31,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 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 11:47:31,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:31,400 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:31,400 INFO L175 Difference]: Start difference. First operand has 154 places, 143 transitions, 557 flow. Second operand 13 states and 1492 transitions. [2022-11-20 11:47:31,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 268 transitions, 1645 flow [2022-11-20 11:47:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 268 transitions, 1601 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:31,687 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 1021 flow [2022-11-20 11:47:31,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1021, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2022-11-20 11:47:31,690 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 32 predicate places. [2022-11-20 11:47:31,691 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 1021 flow [2022-11-20 11:47:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 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 11:47:31,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:31,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:47:31,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:31,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:31,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1930920984, now seen corresponding path program 1 times [2022-11-20 11:47:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:31,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898348564] [2022-11-20 11:47:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:31,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:32,000 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 11:47:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:32,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898348564] [2022-11-20 11:47:32,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898348564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:32,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:32,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:47:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253761615] [2022-11-20 11:47:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:47:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:47:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:47:32,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-11-20 11:47:32,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 1021 flow. Second operand has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 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 11:47:32,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:32,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-11-20 11:47:32,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:40,801 INFO L130 PetriNetUnfolder]: 25821/44491 cut-off events. [2022-11-20 11:47:40,802 INFO L131 PetriNetUnfolder]: For 128559/141302 co-relation queries the response was YES. [2022-11-20 11:47:41,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147586 conditions, 44491 events. 25821/44491 cut-off events. For 128559/141302 co-relation queries the response was YES. Maximal size of possible extension queue 2828. Compared 413714 event pairs, 1450 based on Foata normal form. 2150/45194 useless extension candidates. Maximal degree in co-relation 147498. Up to 9555 conditions per place. [2022-11-20 11:47:41,199 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 136 selfloop transitions, 38 changer transitions 2/305 dead transitions. [2022-11-20 11:47:41,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 305 transitions, 2173 flow [2022-11-20 11:47:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:47:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:47:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1548 transitions. [2022-11-20 11:47:41,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.882051282051282 [2022-11-20 11:47:41,212 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1548 transitions. [2022-11-20 11:47:41,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1548 transitions. [2022-11-20 11:47:41,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:41,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1548 transitions. [2022-11-20 11:47:41,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.07692307692308) internal successors, (1548), 13 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:41,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:41,226 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 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 11:47:41,226 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 1021 flow. Second operand 13 states and 1548 transitions. [2022-11-20 11:47:41,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 305 transitions, 2173 flow [2022-11-20 11:47:42,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 305 transitions, 2135 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-11-20 11:47:42,962 INFO L231 Difference]: Finished difference. Result has 192 places, 193 transitions, 1246 flow [2022-11-20 11:47:42,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1246, PETRI_PLACES=192, PETRI_TRANSITIONS=193} [2022-11-20 11:47:42,963 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 50 predicate places. [2022-11-20 11:47:42,963 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 193 transitions, 1246 flow [2022-11-20 11:47:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 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 11:47:42,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:42,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:47:42,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:47:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1320582960, now seen corresponding path program 1 times [2022-11-20 11:47:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:42,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099513512] [2022-11-20 11:47:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:42,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:43,334 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 11:47:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099513512] [2022-11-20 11:47:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099513512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:43,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:47:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442454347] [2022-11-20 11:47:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:43,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:47:43,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:47:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:43,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 135 [2022-11-20 11:47:43,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 193 transitions, 1246 flow. Second operand has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 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 11:47:43,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:43,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 135 [2022-11-20 11:47:43,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:52,024 INFO L130 PetriNetUnfolder]: 24702/42248 cut-off events. [2022-11-20 11:47:52,025 INFO L131 PetriNetUnfolder]: For 194223/206901 co-relation queries the response was YES. [2022-11-20 11:47:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167576 conditions, 42248 events. 24702/42248 cut-off events. For 194223/206901 co-relation queries the response was YES. Maximal size of possible extension queue 2832. Compared 393582 event pairs, 1259 based on Foata normal form. 1772/42623 useless extension candidates. Maximal degree in co-relation 167479. Up to 9161 conditions per place. [2022-11-20 11:47:52,402 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 134 selfloop transitions, 58 changer transitions 43/345 dead transitions. [2022-11-20 11:47:52,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 345 transitions, 2796 flow [2022-11-20 11:47:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:47:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:47:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1908 transitions. [2022-11-20 11:47:52,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-20 11:47:52,409 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1908 transitions. [2022-11-20 11:47:52,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1908 transitions. [2022-11-20 11:47:52,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:52,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1908 transitions. [2022-11-20 11:47:52,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.25) internal successors, (1908), 16 states have internal predecessors, (1908), 0 states have call successors, (0), 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 11:47:52,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 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 11:47:52,423 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 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 11:47:52,423 INFO L175 Difference]: Start difference. First operand has 192 places, 193 transitions, 1246 flow. Second operand 16 states and 1908 transitions. [2022-11-20 11:47:52,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 345 transitions, 2796 flow [2022-11-20 11:48:07,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 345 transitions, 2680 flow, removed 46 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:07,066 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 1427 flow [2022-11-20 11:48:07,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1427, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2022-11-20 11:48:07,067 INFO L288 CegarLoopForPetriNet]: 142 programPoint places, 61 predicate places. [2022-11-20 11:48:07,067 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 1427 flow [2022-11-20 11:48:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 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 11:48:07,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:07,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:48:07,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:48:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 851615782, now seen corresponding path program 1 times [2022-11-20 11:48:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119896699] [2022-11-20 11:48:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,385 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 11:48:07,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:07,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119896699] [2022-11-20 11:48:07,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119896699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:07,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:07,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514780091] [2022-11-20 11:48:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:07,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:07,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-11-20 11:48:07,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 1427 flow. Second operand has 7 states, 7 states have (on average 107.28571428571429) internal successors, (751), 7 states have internal predecessors, (751), 0 states have call successors, (0), 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 11:48:07,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:07,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-11-20 11:48:07,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:11,067 INFO L130 PetriNetUnfolder]: 6883/21834 cut-off events. [2022-11-20 11:48:11,067 INFO L131 PetriNetUnfolder]: For 102498/106463 co-relation queries the response was YES. [2022-11-20 11:48:11,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82524 conditions, 21834 events. 6883/21834 cut-off events. For 102498/106463 co-relation queries the response was YES. Maximal size of possible extension queue 2797. Compared 308788 event pairs, 318 based on Foata normal form. 32/20440 useless extension candidates. Maximal degree in co-relation 82420. Up to 4556 conditions per place. [2022-11-20 11:48:11,289 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 62 selfloop transitions, 19 changer transitions 42/274 dead transitions. [2022-11-20 11:48:11,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 274 transitions, 2165 flow [2022-11-20 11:48:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1142 transitions. [2022-11-20 11:48:11,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.845925925925926 [2022-11-20 11:48:11,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1142 transitions. [2022-11-20 11:48:11,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1142 transitions. [2022-11-20 11:48:11,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:11,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1142 transitions. [2022-11-20 11:48:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.2) internal successors, (1142), 10 states have internal predecessors, (1142), 0 states have call successors, (0), 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 11:48:11,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 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 11:48:11,303 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 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 11:48:11,303 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 1427 flow. Second operand 10 states and 1142 transitions. [2022-11-20 11:48:11,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 274 transitions, 2165 flow