./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro --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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- 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-8393723 [2022-11-18 20:48:23,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:48:23,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:48:23,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:48:23,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:48:23,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:48:23,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:48:23,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:48:23,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:48:23,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:48:23,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:48:23,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:48:23,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:48:23,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:48:23,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:48:23,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:48:23,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:48:23,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:48:23,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:48:23,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:48:23,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:48:23,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:48:23,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:48:23,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:48:23,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:48:23,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:48:23,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:48:23,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:48:23,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:48:23,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:48:23,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:48:23,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:48:23,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:48:23,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:48:23,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:48:23,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:48:23,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:48:23,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:48:23,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:48:23,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:48:23,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:48:23,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:48:23,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:48:23,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:48:23,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:48:23,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:48:23,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:48:23,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:48:23,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:48:23,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:48:23,923 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:48:23,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:48:23,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:48:23,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:48:23,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:48:23,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:48:23,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:48:23,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:48:23,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:48:23,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:48:23,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:48:23,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:48:23,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:48:23,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:48:23,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:48:23,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:48:23,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:23,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:48:23,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:48:23,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:48:23,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:48:23,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:48:23,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:48:23,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:48:23,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:48:23,933 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_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-11-18 20:48:24,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:48:24,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:48:24,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:48:24,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:48:24,368 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:48:24,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-11-18 20:48:24,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/data/fa056891b/fe92e23d24ac413f8441df3a50b2b5d2/FLAG27f40ac5d [2022-11-18 20:48:25,234 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:48:25,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-11-18 20:48:25,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/data/fa056891b/fe92e23d24ac413f8441df3a50b2b5d2/FLAG27f40ac5d [2022-11-18 20:48:25,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/data/fa056891b/fe92e23d24ac413f8441df3a50b2b5d2 [2022-11-18 20:48:25,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:48:25,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:48:25,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:25,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:48:25,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:48:25,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3ffac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:25, skipping insertion in model container [2022-11-18 20:48:25,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:25" (1/1) ... [2022-11-18 20:48:25,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:48:25,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:48:25,883 WARN L234 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_a99d9d6a-fe3c-429d-9144-c8df589e5852/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-11-18 20:48:26,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:26,265 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:48:26,292 WARN L234 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_a99d9d6a-fe3c-429d-9144-c8df589e5852/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-11-18 20:48:26,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:26,453 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:48:26,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26 WrapperNode [2022-11-18 20:48:26,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:26,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:26,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:48:26,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:48:26,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,544 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 203 [2022-11-18 20:48:26,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:26,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:48:26,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:48:26,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:48:26,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:48:26,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:48:26,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:48:26,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:48:26,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (1/1) ... [2022-11-18 20:48:26,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:26,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:26,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:48:26,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:48:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:48:26,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:48:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:48:26,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:48:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:48:26,707 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:48:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:48:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:48:26,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:48:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:48:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:48:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:48:26,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:48:26,714 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:48:27,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:48:27,022 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:48:27,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:48:28,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:48:28,161 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:48:28,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:28 BoogieIcfgContainer [2022-11-18 20:48:28,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:48:28,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:48:28,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:48:28,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:48:28,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:48:25" (1/3) ... [2022-11-18 20:48:28,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65364bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:28, skipping insertion in model container [2022-11-18 20:48:28,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:26" (2/3) ... [2022-11-18 20:48:28,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65364bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:28, skipping insertion in model container [2022-11-18 20:48:28,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:28" (3/3) ... [2022-11-18 20:48:28,177 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-11-18 20:48:28,188 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:48:28,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:48:28,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 20:48:28,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:48:28,267 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:48:28,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-11-18 20:48:28,443 INFO L130 PetriNetUnfolder]: 2/112 cut-off events. [2022-11-18 20:48:28,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:48:28,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-11-18 20:48:28,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-11-18 20:48:28,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-11-18 20:48:28,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:48:28,493 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;@26b28200, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:48:28,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:48:28,531 INFO L130 PetriNetUnfolder]: 0/73 cut-off events. [2022-11-18 20:48:28,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:48:28,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:28,534 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] [2022-11-18 20:48:28,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1543519197, now seen corresponding path program 1 times [2022-11-18 20:48:28,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:28,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388929399] [2022-11-18 20:48:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388929399] [2022-11-18 20:48:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388929399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:29,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:48:29,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905852303] [2022-11-18 20:48:29,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:29,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:29,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-11-18 20:48:29,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:29,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-11-18 20:48:29,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:29,838 INFO L130 PetriNetUnfolder]: 111/381 cut-off events. [2022-11-18 20:48:29,838 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 20:48:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 381 events. 111/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1609 event pairs, 9 based on Foata normal form. 20/358 useless extension candidates. Maximal degree in co-relation 532. Up to 175 conditions per place. [2022-11-18 20:48:29,847 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-11-18 20:48:29,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-11-18 20:48:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:48:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-11-18 20:48:29,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-11-18 20:48:29,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-11-18 20:48:29,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-11-18 20:48:29,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:29,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-11-18 20:48:29,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,913 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-11-18 20:48:29,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-11-18 20:48:29,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:48:29,933 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-11-18 20:48:29,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-11-18 20:48:29,941 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-11-18 20:48:29,942 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-11-18 20:48:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:29,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:29,943 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] [2022-11-18 20:48:29,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:48:29,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -604454320, now seen corresponding path program 1 times [2022-11-18 20:48:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:29,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498739362] [2022-11-18 20:48:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:30,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:30,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498739362] [2022-11-18 20:48:30,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498739362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:30,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:30,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:48:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330989162] [2022-11-18 20:48:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:48:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:48:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:48:30,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-11-18 20:48:30,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:30,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-11-18 20:48:30,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:30,488 INFO L130 PetriNetUnfolder]: 94/419 cut-off events. [2022-11-18 20:48:30,488 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-18 20:48:30,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 419 events. 94/419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2005 event pairs, 26 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 553. Up to 117 conditions per place. [2022-11-18 20:48:30,497 INFO L137 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-18 20:48:30,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-11-18 20:48:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:48:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:48:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-11-18 20:48:30,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-11-18 20:48:30,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-11-18 20:48:30,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-11-18 20:48:30,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:30,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-11-18 20:48:30,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,511 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-11-18 20:48:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-11-18 20:48:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:48:30,518 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-11-18 20:48:30,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-11-18 20:48:30,520 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-11-18 20:48:30,520 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-11-18 20:48:30,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:30,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:30,522 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] [2022-11-18 20:48:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:48:30,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1539967527, now seen corresponding path program 1 times [2022-11-18 20:48:30,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:30,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202021271] [2022-11-18 20:48:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:30,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:31,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202021271] [2022-11-18 20:48:31,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202021271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:31,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:31,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:48:31,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925429418] [2022-11-18 20:48:31,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:31,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:48:31,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:48:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:48:31,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 114 [2022-11-18 20:48:31,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:31,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:31,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 114 [2022-11-18 20:48:31,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:32,716 INFO L130 PetriNetUnfolder]: 435/1244 cut-off events. [2022-11-18 20:48:32,716 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-18 20:48:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1244 events. 435/1244 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7874 event pairs, 104 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 1973. Up to 292 conditions per place. [2022-11-18 20:48:32,726 INFO L137 encePairwiseOnDemand]: 107/114 looper letters, 30 selfloop transitions, 3 changer transitions 58/160 dead transitions. [2022-11-18 20:48:32,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 160 transitions, 498 flow [2022-11-18 20:48:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:48:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:48:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 884 transitions. [2022-11-18 20:48:32,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775438596491228 [2022-11-18 20:48:32,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 884 transitions. [2022-11-18 20:48:32,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 884 transitions. [2022-11-18 20:48:32,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:32,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 884 transitions. [2022-11-18 20:48:32,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.4) internal successors, (884), 10 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,743 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,743 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 10 states and 884 transitions. [2022-11-18 20:48:32,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 160 transitions, 498 flow [2022-11-18 20:48:32,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 160 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:48:32,749 INFO L231 Difference]: Finished difference. Result has 128 places, 97 transitions, 220 flow [2022-11-18 20:48:32,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=220, PETRI_PLACES=128, PETRI_TRANSITIONS=97} [2022-11-18 20:48:32,751 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 11 predicate places. [2022-11-18 20:48:32,751 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 97 transitions, 220 flow [2022-11-18 20:48:32,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:32,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:32,752 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] [2022-11-18 20:48:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:48:32,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash -36366090, now seen corresponding path program 1 times [2022-11-18 20:48:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542996675] [2022-11-18 20:48:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:33,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542996675] [2022-11-18 20:48:33,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542996675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:33,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:33,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:48:33,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135244430] [2022-11-18 20:48:33,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:48:33,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:48:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:48:33,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-11-18 20:48:33,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 97 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:33,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-11-18 20:48:33,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:33,903 INFO L130 PetriNetUnfolder]: 153/461 cut-off events. [2022-11-18 20:48:33,903 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-11-18 20:48:33,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 461 events. 153/461 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2022 event pairs, 37 based on Foata normal form. 12/451 useless extension candidates. Maximal degree in co-relation 826. Up to 126 conditions per place. [2022-11-18 20:48:33,907 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 23 selfloop transitions, 2 changer transitions 28/132 dead transitions. [2022-11-18 20:48:33,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 132 transitions, 419 flow [2022-11-18 20:48:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-11-18 20:48:33,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-11-18 20:48:33,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-11-18 20:48:33,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-11-18 20:48:33,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:33,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-11-18 20:48:33,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.11111111111111) internal successors, (865), 9 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,924 INFO L175 Difference]: Start difference. First operand has 128 places, 97 transitions, 220 flow. Second operand 9 states and 865 transitions. [2022-11-18 20:48:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 132 transitions, 419 flow [2022-11-18 20:48:33,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 132 transitions, 383 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-18 20:48:33,932 INFO L231 Difference]: Finished difference. Result has 118 places, 97 transitions, 222 flow [2022-11-18 20:48:33,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=118, PETRI_TRANSITIONS=97} [2022-11-18 20:48:33,935 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2022-11-18 20:48:33,935 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 97 transitions, 222 flow [2022-11-18 20:48:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:33,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:33,943 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] [2022-11-18 20:48:33,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:48:33,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 947372540, now seen corresponding path program 1 times [2022-11-18 20:48:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:33,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258207331] [2022-11-18 20:48:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:33,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:36,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258207331] [2022-11-18 20:48:36,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258207331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:36,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:36,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:48:36,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306464514] [2022-11-18 20:48:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:36,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:48:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:48:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:48:36,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 114 [2022-11-18 20:48:36,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 97 transitions, 222 flow. Second operand has 16 states, 16 states have (on average 81.5625) internal successors, (1305), 16 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:36,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:36,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 114 [2022-11-18 20:48:36,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:38,104 INFO L130 PetriNetUnfolder]: 188/510 cut-off events. [2022-11-18 20:48:38,104 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-18 20:48:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 510 events. 188/510 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2185 event pairs, 51 based on Foata normal form. 6/469 useless extension candidates. Maximal degree in co-relation 997. Up to 190 conditions per place. [2022-11-18 20:48:38,108 INFO L137 encePairwiseOnDemand]: 97/114 looper letters, 35 selfloop transitions, 15 changer transitions 20/139 dead transitions. [2022-11-18 20:48:38,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 139 transitions, 483 flow [2022-11-18 20:48:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:48:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:48:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1432 transitions. [2022-11-18 20:48:38,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7389060887512899 [2022-11-18 20:48:38,113 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1432 transitions. [2022-11-18 20:48:38,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1432 transitions. [2022-11-18 20:48:38,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:38,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1432 transitions. [2022-11-18 20:48:38,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.23529411764706) internal successors, (1432), 17 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,123 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,124 INFO L175 Difference]: Start difference. First operand has 118 places, 97 transitions, 222 flow. Second operand 17 states and 1432 transitions. [2022-11-18 20:48:38,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 139 transitions, 483 flow [2022-11-18 20:48:38,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 139 transitions, 445 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-18 20:48:38,129 INFO L231 Difference]: Finished difference. Result has 129 places, 105 transitions, 295 flow [2022-11-18 20:48:38,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=295, PETRI_PLACES=129, PETRI_TRANSITIONS=105} [2022-11-18 20:48:38,130 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 12 predicate places. [2022-11-18 20:48:38,130 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 105 transitions, 295 flow [2022-11-18 20:48:38,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 81.5625) internal successors, (1305), 16 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:38,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:38,131 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] [2022-11-18 20:48:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:48:38,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash 734376336, now seen corresponding path program 2 times [2022-11-18 20:48:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:38,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097529441] [2022-11-18 20:48:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:40,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097529441] [2022-11-18 20:48:40,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097529441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:40,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:40,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:48:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841422389] [2022-11-18 20:48:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:40,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:48:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:48:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:48:40,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-11-18 20:48:40,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 105 transitions, 295 flow. Second operand has 15 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:40,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:40,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-11-18 20:48:40,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:41,806 INFO L130 PetriNetUnfolder]: 229/660 cut-off events. [2022-11-18 20:48:41,806 INFO L131 PetriNetUnfolder]: For 365/2303 co-relation queries the response was YES. [2022-11-18 20:48:41,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 660 events. 229/660 cut-off events. For 365/2303 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3363 event pairs, 37 based on Foata normal form. 15/621 useless extension candidates. Maximal degree in co-relation 1624. Up to 225 conditions per place. [2022-11-18 20:48:41,813 INFO L137 encePairwiseOnDemand]: 99/114 looper letters, 44 selfloop transitions, 21 changer transitions 23/158 dead transitions. [2022-11-18 20:48:41,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 158 transitions, 680 flow [2022-11-18 20:48:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:48:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:48:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1459 transitions. [2022-11-18 20:48:41,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7528379772961816 [2022-11-18 20:48:41,819 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1459 transitions. [2022-11-18 20:48:41,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1459 transitions. [2022-11-18 20:48:41,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:41,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1459 transitions. [2022-11-18 20:48:41,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 85.82352941176471) internal successors, (1459), 17 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,855 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 114.0) internal successors, (2052), 18 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,855 INFO L175 Difference]: Start difference. First operand has 129 places, 105 transitions, 295 flow. Second operand 17 states and 1459 transitions. [2022-11-18 20:48:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 158 transitions, 680 flow [2022-11-18 20:48:41,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 158 transitions, 643 flow, removed 14 selfloop flow, removed 11 redundant places. [2022-11-18 20:48:41,863 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 420 flow [2022-11-18 20:48:41,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=420, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2022-11-18 20:48:41,865 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 21 predicate places. [2022-11-18 20:48:41,865 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 420 flow [2022-11-18 20:48:41,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:41,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:41,866 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] [2022-11-18 20:48:41,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:48:41,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash -580439033, now seen corresponding path program 1 times [2022-11-18 20:48:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:41,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443065156] [2022-11-18 20:48:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:44,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443065156] [2022-11-18 20:48:44,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443065156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:44,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:44,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 20:48:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212155147] [2022-11-18 20:48:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:44,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 114 [2022-11-18 20:48:44,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 420 flow. Second operand has 18 states, 18 states have (on average 78.5) internal successors, (1413), 18 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:44,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:44,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 114 [2022-11-18 20:48:44,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:46,614 INFO L130 PetriNetUnfolder]: 560/1342 cut-off events. [2022-11-18 20:48:46,615 INFO L131 PetriNetUnfolder]: For 1628/2474 co-relation queries the response was YES. [2022-11-18 20:48:46,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 1342 events. 560/1342 cut-off events. For 1628/2474 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8863 event pairs, 110 based on Foata normal form. 22/1341 useless extension candidates. Maximal degree in co-relation 3641. Up to 348 conditions per place. [2022-11-18 20:48:46,630 INFO L137 encePairwiseOnDemand]: 98/114 looper letters, 82 selfloop transitions, 26 changer transitions 48/222 dead transitions. [2022-11-18 20:48:46,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 222 transitions, 1219 flow [2022-11-18 20:48:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:48:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:48:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1979 transitions. [2022-11-18 20:48:46,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7233187134502924 [2022-11-18 20:48:46,638 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1979 transitions. [2022-11-18 20:48:46,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1979 transitions. [2022-11-18 20:48:46,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:46,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1979 transitions. [2022-11-18 20:48:46,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.45833333333333) internal successors, (1979), 24 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,653 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 114.0) internal successors, (2850), 25 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,653 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 420 flow. Second operand 24 states and 1979 transitions. [2022-11-18 20:48:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 222 transitions, 1219 flow [2022-11-18 20:48:46,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 222 transitions, 1137 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-11-18 20:48:46,668 INFO L231 Difference]: Finished difference. Result has 160 places, 132 transitions, 598 flow [2022-11-18 20:48:46,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=598, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-11-18 20:48:46,670 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 43 predicate places. [2022-11-18 20:48:46,670 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 598 flow [2022-11-18 20:48:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 78.5) internal successors, (1413), 18 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:46,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:46,672 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] [2022-11-18 20:48:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:48:46,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash 783777581, now seen corresponding path program 2 times [2022-11-18 20:48:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:46,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446292725] [2022-11-18 20:48:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:49,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446292725] [2022-11-18 20:48:49,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446292725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:49,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:49,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:48:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541902026] [2022-11-18 20:48:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:48:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:48:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:48:49,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-11-18 20:48:49,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:49,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:49,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-11-18 20:48:49,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:50,645 INFO L130 PetriNetUnfolder]: 244/753 cut-off events. [2022-11-18 20:48:50,645 INFO L131 PetriNetUnfolder]: For 2624/7595 co-relation queries the response was YES. [2022-11-18 20:48:50,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 753 events. 244/753 cut-off events. For 2624/7595 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4405 event pairs, 54 based on Foata normal form. 30/719 useless extension candidates. Maximal degree in co-relation 2654. Up to 228 conditions per place. [2022-11-18 20:48:50,655 INFO L137 encePairwiseOnDemand]: 102/114 looper letters, 53 selfloop transitions, 24 changer transitions 16/168 dead transitions. [2022-11-18 20:48:50,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 168 transitions, 1053 flow [2022-11-18 20:48:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:48:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:48:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1284 transitions. [2022-11-18 20:48:50,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7508771929824561 [2022-11-18 20:48:50,661 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1284 transitions. [2022-11-18 20:48:50,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1284 transitions. [2022-11-18 20:48:50,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:50,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1284 transitions. [2022-11-18 20:48:50,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.6) internal successors, (1284), 15 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,677 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,677 INFO L175 Difference]: Start difference. First operand has 160 places, 132 transitions, 598 flow. Second operand 15 states and 1284 transitions. [2022-11-18 20:48:50,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 168 transitions, 1053 flow [2022-11-18 20:48:50,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 168 transitions, 983 flow, removed 29 selfloop flow, removed 11 redundant places. [2022-11-18 20:48:50,696 INFO L231 Difference]: Finished difference. Result has 158 places, 137 transitions, 698 flow [2022-11-18 20:48:50,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=698, PETRI_PLACES=158, PETRI_TRANSITIONS=137} [2022-11-18 20:48:50,702 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-11-18 20:48:50,702 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 137 transitions, 698 flow [2022-11-18 20:48:50,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:50,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:50,703 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] [2022-11-18 20:48:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:48:50,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:50,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1802909215, now seen corresponding path program 1 times [2022-11-18 20:48:50,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221356836] [2022-11-18 20:48:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:50,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:52,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221356836] [2022-11-18 20:48:52,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221356836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:52,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:52,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:48:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780554406] [2022-11-18 20:48:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:48:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:48:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:52,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 114 [2022-11-18 20:48:52,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 137 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:52,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:52,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 114 [2022-11-18 20:48:52,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:53,519 INFO L130 PetriNetUnfolder]: 643/1631 cut-off events. [2022-11-18 20:48:53,520 INFO L131 PetriNetUnfolder]: For 4734/5825 co-relation queries the response was YES. [2022-11-18 20:48:53,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5744 conditions, 1631 events. 643/1631 cut-off events. For 4734/5825 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11943 event pairs, 88 based on Foata normal form. 39/1580 useless extension candidates. Maximal degree in co-relation 5635. Up to 422 conditions per place. [2022-11-18 20:48:53,537 INFO L137 encePairwiseOnDemand]: 99/114 looper letters, 77 selfloop transitions, 21 changer transitions 75/237 dead transitions. [2022-11-18 20:48:53,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 237 transitions, 1857 flow [2022-11-18 20:48:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:48:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:48:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1166 transitions. [2022-11-18 20:48:53,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305764411027569 [2022-11-18 20:48:53,543 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1166 transitions. [2022-11-18 20:48:53,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1166 transitions. [2022-11-18 20:48:53,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:53,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1166 transitions. [2022-11-18 20:48:53,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.28571428571429) internal successors, (1166), 14 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:53,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:53,553 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:53,553 INFO L175 Difference]: Start difference. First operand has 158 places, 137 transitions, 698 flow. Second operand 14 states and 1166 transitions. [2022-11-18 20:48:53,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 237 transitions, 1857 flow [2022-11-18 20:48:53,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 237 transitions, 1725 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-11-18 20:48:53,596 INFO L231 Difference]: Finished difference. Result has 164 places, 137 transitions, 725 flow [2022-11-18 20:48:53,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=725, PETRI_PLACES=164, PETRI_TRANSITIONS=137} [2022-11-18 20:48:53,597 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 47 predicate places. [2022-11-18 20:48:53,598 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 137 transitions, 725 flow [2022-11-18 20:48:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:53,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:53,599 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] [2022-11-18 20:48:53,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:48:53,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2009495889, now seen corresponding path program 2 times [2022-11-18 20:48:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:53,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307238611] [2022-11-18 20:48:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:55,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:55,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307238611] [2022-11-18 20:48:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307238611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:55,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:55,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:48:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444301748] [2022-11-18 20:48:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:55,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:48:55,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:48:55,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:48:55,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 114 [2022-11-18 20:48:55,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 137 transitions, 725 flow. Second operand has 12 states, 12 states have (on average 77.5) internal successors, (930), 12 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:55,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 114 [2022-11-18 20:48:55,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:56,496 INFO L130 PetriNetUnfolder]: 463/1148 cut-off events. [2022-11-18 20:48:56,496 INFO L131 PetriNetUnfolder]: For 4101/5356 co-relation queries the response was YES. [2022-11-18 20:48:56,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 1148 events. 463/1148 cut-off events. For 4101/5356 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7404 event pairs, 122 based on Foata normal form. 18/1143 useless extension candidates. Maximal degree in co-relation 4387. Up to 355 conditions per place. [2022-11-18 20:48:56,513 INFO L137 encePairwiseOnDemand]: 100/114 looper letters, 70 selfloop transitions, 17 changer transitions 76/227 dead transitions. [2022-11-18 20:48:56,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 227 transitions, 1774 flow [2022-11-18 20:48:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:48:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:48:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1315 transitions. [2022-11-18 20:48:56,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7209429824561403 [2022-11-18 20:48:56,519 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1315 transitions. [2022-11-18 20:48:56,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1315 transitions. [2022-11-18 20:48:56,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:56,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1315 transitions. [2022-11-18 20:48:56,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 82.1875) internal successors, (1315), 16 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,531 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 114.0) internal successors, (1938), 17 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,532 INFO L175 Difference]: Start difference. First operand has 164 places, 137 transitions, 725 flow. Second operand 16 states and 1315 transitions. [2022-11-18 20:48:56,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 227 transitions, 1774 flow [2022-11-18 20:48:56,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 1697 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-11-18 20:48:56,564 INFO L231 Difference]: Finished difference. Result has 170 places, 133 transitions, 729 flow [2022-11-18 20:48:56,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=729, PETRI_PLACES=170, PETRI_TRANSITIONS=133} [2022-11-18 20:48:56,566 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2022-11-18 20:48:56,567 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 133 transitions, 729 flow [2022-11-18 20:48:56,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 77.5) internal successors, (930), 12 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:56,568 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] [2022-11-18 20:48:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:48:56,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1096647383, now seen corresponding path program 3 times [2022-11-18 20:48:56,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:56,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809784702] [2022-11-18 20:48:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:58,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:58,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809784702] [2022-11-18 20:48:58,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809784702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:58,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:58,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:48:58,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302100366] [2022-11-18 20:48:58,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:58,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:58,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 114 [2022-11-18 20:48:58,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 133 transitions, 729 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:58,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:58,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 114 [2022-11-18 20:48:58,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:59,287 INFO L130 PetriNetUnfolder]: 203/711 cut-off events. [2022-11-18 20:48:59,287 INFO L131 PetriNetUnfolder]: For 3261/10184 co-relation queries the response was YES. [2022-11-18 20:48:59,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 711 events. 203/711 cut-off events. For 3261/10184 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4246 event pairs, 53 based on Foata normal form. 25/684 useless extension candidates. Maximal degree in co-relation 2871. Up to 212 conditions per place. [2022-11-18 20:48:59,296 INFO L137 encePairwiseOnDemand]: 104/114 looper letters, 55 selfloop transitions, 10 changer transitions 33/168 dead transitions. [2022-11-18 20:48:59,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 1285 flow [2022-11-18 20:48:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:48:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:48:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2022-11-18 20:48:59,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7228070175438597 [2022-11-18 20:48:59,300 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2022-11-18 20:48:59,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2022-11-18 20:48:59,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:59,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2022-11-18 20:48:59,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:59,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:59,306 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:59,306 INFO L175 Difference]: Start difference. First operand has 170 places, 133 transitions, 729 flow. Second operand 10 states and 824 transitions. [2022-11-18 20:48:59,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 1285 flow [2022-11-18 20:48:59,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 168 transitions, 1219 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-18 20:48:59,324 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 689 flow [2022-11-18 20:48:59,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=689, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2022-11-18 20:48:59,326 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 41 predicate places. [2022-11-18 20:48:59,327 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 689 flow [2022-11-18 20:48:59,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:59,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:59,329 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] [2022-11-18 20:48:59,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:48:59,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-18 20:48:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:59,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1958017223, now seen corresponding path program 4 times [2022-11-18 20:48:59,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:59,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402782701] [2022-11-18 20:48:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:59,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402782701] [2022-11-18 20:49:01,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402782701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:01,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:01,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:49:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665509478] [2022-11-18 20:49:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:49:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:49:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:01,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2022-11-18 20:49:01,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:01,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2022-11-18 20:49:01,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:01,631 INFO L130 PetriNetUnfolder]: 107/403 cut-off events. [2022-11-18 20:49:01,632 INFO L131 PetriNetUnfolder]: For 1890/6375 co-relation queries the response was YES. [2022-11-18 20:49:01,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 403 events. 107/403 cut-off events. For 1890/6375 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1818 event pairs, 60 based on Foata normal form. 14/375 useless extension candidates. Maximal degree in co-relation 1530. Up to 157 conditions per place. [2022-11-18 20:49:01,636 INFO L137 encePairwiseOnDemand]: 106/114 looper letters, 0 selfloop transitions, 0 changer transitions 137/137 dead transitions. [2022-11-18 20:49:01,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 137 transitions, 897 flow [2022-11-18 20:49:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:49:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:49:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 791 transitions. [2022-11-18 20:49:01,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7709551656920078 [2022-11-18 20:49:01,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 791 transitions. [2022-11-18 20:49:01,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 791 transitions. [2022-11-18 20:49:01,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:01,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 791 transitions. [2022-11-18 20:49:01,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.88888888888889) internal successors, (791), 9 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,651 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 689 flow. Second operand 9 states and 791 transitions. [2022-11-18 20:49:01,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 137 transitions, 897 flow [2022-11-18 20:49:01,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 856 flow, removed 9 selfloop flow, removed 12 redundant places. [2022-11-18 20:49:01,661 INFO L231 Difference]: Finished difference. Result has 148 places, 0 transitions, 0 flow [2022-11-18 20:49:01,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=148, PETRI_TRANSITIONS=0} [2022-11-18 20:49:01,663 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2022-11-18 20:49:01,663 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 0 transitions, 0 flow [2022-11-18 20:49:01,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:01,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-18 20:49:01,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-18 20:49:01,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-18 20:49:01,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-18 20:49:01,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-18 20:49:01,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-18 20:49:01,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-18 20:49:01,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:49:01,672 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1] [2022-11-18 20:49:01,679 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:49:01,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:49:01,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:49:01 BasicIcfg [2022-11-18 20:49:01,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:49:01,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:49:01,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:49:01,688 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:49:01,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:28" (3/4) ... [2022-11-18 20:49:01,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:49:01,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 20:49:01,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 20:49:01,707 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-18 20:49:01,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-18 20:49:01,708 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:49:01,709 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:49:01,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:49:01,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:49:01,774 INFO L158 Benchmark]: Toolchain (without parser) took 36297.63ms. Allocated memory was 130.0MB in the beginning and 559.9MB in the end (delta: 429.9MB). Free memory was 94.8MB in the beginning and 372.2MB in the end (delta: -277.4MB). Peak memory consumption was 151.0MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,774 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:49:01,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 976.22ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 88.5MB in the end (delta: 6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.25ms. Allocated memory is still 130.0MB. Free memory was 88.5MB in the beginning and 85.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,776 INFO L158 Benchmark]: Boogie Preprocessor took 41.52ms. Allocated memory is still 130.0MB. Free memory was 85.2MB in the beginning and 82.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,776 INFO L158 Benchmark]: RCFGBuilder took 1576.26ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 78.4MB in the end (delta: 4.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,777 INFO L158 Benchmark]: TraceAbstraction took 33517.84ms. Allocated memory was 130.0MB in the beginning and 559.9MB in the end (delta: 429.9MB). Free memory was 77.6MB in the beginning and 375.4MB in the end (delta: -297.8MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,777 INFO L158 Benchmark]: Witness Printer took 86.21ms. Allocated memory is still 559.9MB. Free memory was 375.4MB in the beginning and 372.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:49:01,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 56.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 976.22ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 88.5MB in the end (delta: 6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.25ms. Allocated memory is still 130.0MB. Free memory was 88.5MB in the beginning and 85.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.52ms. Allocated memory is still 130.0MB. Free memory was 85.2MB in the beginning and 82.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1576.26ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 78.4MB in the end (delta: 4.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * TraceAbstraction took 33517.84ms. Allocated memory was 130.0MB in the beginning and 559.9MB in the end (delta: 429.9MB). Free memory was 77.6MB in the beginning and 375.4MB in the end (delta: -297.8MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. * Witness Printer took 86.21ms. Allocated memory is still 559.9MB. Free memory was 375.4MB in the beginning and 372.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 842 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 842 mSDsluCounter, 880 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 738 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2609 IncrementalHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 142 mSDtfsCounter, 2609 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=729occurred in iteration=10, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 18.4s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 985 ConstructedInterpolants, 0 QuantifiedInterpolants, 7086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:49:01,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99d9d6a-fe3c-429d-9144-c8df589e5852/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE