./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8 --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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- 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-e04fb08 [2022-11-16 11:23:58,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:58,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:58,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:58,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:58,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:58,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:58,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:58,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:58,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:58,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:58,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:58,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:58,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:58,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:58,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:58,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:58,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:58,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:58,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:58,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:58,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:58,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:58,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:58,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:58,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:58,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:58,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:58,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:58,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:58,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:58,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:58,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:58,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:58,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:58,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:58,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:58,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:58,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:58,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:58,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:58,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:23:58,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:58,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:58,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:58,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:58,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:23:58,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:23:58,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:58,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:58,732 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:58,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:58,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:23:58,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:58,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:23:58,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:58,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:23:58,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:23:58,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:23:58,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:23:58,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:58,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:58,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:23:58,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:58,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:58,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:23:58,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:23:58,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:58,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:23:58,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:23:58,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:58,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:23:58,742 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:23:58,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:23:58,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:23:58,744 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_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2022-11-16 11:23:59,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:59,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:59,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:59,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:59,107 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:59,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-16 11:23:59,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/data/40c1f3cee/b3f78e4562944194b723c3283b7b0587/FLAG213d6c5d0 [2022-11-16 11:23:59,935 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:59,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-16 11:23:59,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/data/40c1f3cee/b3f78e4562944194b723c3283b7b0587/FLAG213d6c5d0 [2022-11-16 11:24:00,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/data/40c1f3cee/b3f78e4562944194b723c3283b7b0587 [2022-11-16 11:24:00,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:24:00,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:24:00,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:00,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:24:00,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:24:00,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:00,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfba5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00, skipping insertion in model container [2022-11-16 11:24:00,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:00,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:24:00,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:24:00,811 WARN L229 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_2a797273-64fd-466c-a019-fce5d6065271/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-16 11:24:00,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:00,837 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:24:00,941 WARN L229 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_2a797273-64fd-466c-a019-fce5d6065271/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-16 11:24:00,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:00,979 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:24:00,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00 WrapperNode [2022-11-16 11:24:00,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:00,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:00,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:24:00,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:24:00,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,119 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1522 [2022-11-16 11:24:01,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:01,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:24:01,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:24:01,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:24:01,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:24:01,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:24:01,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:24:01,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:24:01,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (1/1) ... [2022-11-16 11:24:01,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:01,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:01,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:24:01,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:24:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:24:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:24:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:24:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:24:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:24:01,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:24:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:24:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:24:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:24:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:24:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:24:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:24:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:24:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:24:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:24:01,387 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:24:01,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:24:01,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:24:04,583 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:24:06,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:24:06,933 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-16 11:24:06,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:06 BoogieIcfgContainer [2022-11-16 11:24:06,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:24:06,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:24:06,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:24:06,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:24:06,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:24:00" (1/3) ... [2022-11-16 11:24:06,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c420982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:06, skipping insertion in model container [2022-11-16 11:24:06,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:00" (2/3) ... [2022-11-16 11:24:06,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c420982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:06, skipping insertion in model container [2022-11-16 11:24:06,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:06" (3/3) ... [2022-11-16 11:24:06,949 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2022-11-16 11:24:06,962 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:24:06,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:24:06,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:24:06,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:24:07,438 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:24:07,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 476 transitions, 968 flow [2022-11-16 11:24:07,909 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-16 11:24:07,909 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:24:07,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 474 events. 53/474 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 491 event pairs, 0 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 402. Up to 7 conditions per place. [2022-11-16 11:24:07,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 476 transitions, 968 flow [2022-11-16 11:24:07,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 465 transitions, 942 flow [2022-11-16 11:24:07,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:07,958 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;@1ebf810c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:07,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 11:24:08,170 INFO L130 PetriNetUnfolder]: 53/464 cut-off events. [2022-11-16 11:24:08,170 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:24:08,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:08,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:08,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:08,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:08,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1982701877, now seen corresponding path program 1 times [2022-11-16 11:24:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:08,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638381606] [2022-11-16 11:24:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:08,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638381606] [2022-11-16 11:24:08,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638381606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:08,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:08,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302954628] [2022-11-16 11:24:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:08,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 476 [2022-11-16 11:24:08,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 465 transitions, 942 flow. Second operand has 2 states, 2 states have (on average 428.0) internal successors, (856), 2 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:08,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:08,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 476 [2022-11-16 11:24:08,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:09,548 INFO L130 PetriNetUnfolder]: 103/597 cut-off events. [2022-11-16 11:24:09,549 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 11:24:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 597 events. 103/597 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1207 event pairs, 15 based on Foata normal form. 45/565 useless extension candidates. Maximal degree in co-relation 388. Up to 121 conditions per place. [2022-11-16 11:24:09,562 INFO L137 encePairwiseOnDemand]: 447/476 looper letters, 26 selfloop transitions, 0 changer transitions 17/436 dead transitions. [2022-11-16 11:24:09,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 436 transitions, 936 flow [2022-11-16 11:24:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:24:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 895 transitions. [2022-11-16 11:24:09,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9401260504201681 [2022-11-16 11:24:09,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 895 transitions. [2022-11-16 11:24:09,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 895 transitions. [2022-11-16 11:24:09,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:09,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 895 transitions. [2022-11-16 11:24:09,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 447.5) internal successors, (895), 2 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,631 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,633 INFO L175 Difference]: Start difference. First operand has 419 places, 465 transitions, 942 flow. Second operand 2 states and 895 transitions. [2022-11-16 11:24:09,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 436 transitions, 936 flow [2022-11-16 11:24:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 436 transitions, 928 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:09,659 INFO L231 Difference]: Finished difference. Result has 416 places, 419 transitions, 842 flow [2022-11-16 11:24:09,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=416, PETRI_TRANSITIONS=419} [2022-11-16 11:24:09,670 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -3 predicate places. [2022-11-16 11:24:09,671 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 419 transitions, 842 flow [2022-11-16 11:24:09,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 428.0) internal successors, (856), 2 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:09,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:09,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:24:09,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -51994068, now seen corresponding path program 1 times [2022-11-16 11:24:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:09,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745889892] [2022-11-16 11:24:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:24:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745889892] [2022-11-16 11:24:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745889892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:10,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43321751] [2022-11-16 11:24:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:24:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:24:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:24:10,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 476 [2022-11-16 11:24:10,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 419 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:10,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:10,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 476 [2022-11-16 11:24:10,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:11,533 INFO L130 PetriNetUnfolder]: 103/604 cut-off events. [2022-11-16 11:24:11,533 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:24:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 604 events. 103/604 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1179 event pairs, 15 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 841. Up to 168 conditions per place. [2022-11-16 11:24:11,544 INFO L137 encePairwiseOnDemand]: 454/476 looper letters, 120 selfloop transitions, 18 changer transitions 0/435 dead transitions. [2022-11-16 11:24:11,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 435 transitions, 1150 flow [2022-11-16 11:24:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2086 transitions. [2022-11-16 11:24:11,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303921568627451 [2022-11-16 11:24:11,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2086 transitions. [2022-11-16 11:24:11,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2086 transitions. [2022-11-16 11:24:11,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:11,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2086 transitions. [2022-11-16 11:24:11,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 347.6666666666667) internal successors, (2086), 6 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,578 INFO L175 Difference]: Start difference. First operand has 416 places, 419 transitions, 842 flow. Second operand 6 states and 2086 transitions. [2022-11-16 11:24:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 435 transitions, 1150 flow [2022-11-16 11:24:11,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 435 transitions, 1150 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:24:11,591 INFO L231 Difference]: Finished difference. Result has 405 places, 423 transitions, 910 flow [2022-11-16 11:24:11,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=405, PETRI_TRANSITIONS=423} [2022-11-16 11:24:11,594 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -14 predicate places. [2022-11-16 11:24:11,594 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 423 transitions, 910 flow [2022-11-16 11:24:11,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:11,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:11,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:11,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:24:11,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1836450504, now seen corresponding path program 1 times [2022-11-16 11:24:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:11,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4300881] [2022-11-16 11:24:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:12,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:12,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4300881] [2022-11-16 11:24:12,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4300881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:12,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:12,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714572431] [2022-11-16 11:24:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:24:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:12,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:24:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:24:12,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 476 [2022-11-16 11:24:12,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 423 transitions, 910 flow. Second operand has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:12,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:12,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 476 [2022-11-16 11:24:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:12,820 INFO L130 PetriNetUnfolder]: 103/628 cut-off events. [2022-11-16 11:24:12,821 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-16 11:24:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 628 events. 103/628 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1178 event pairs, 15 based on Foata normal form. 0/572 useless extension candidates. Maximal degree in co-relation 911. Up to 162 conditions per place. [2022-11-16 11:24:12,826 INFO L137 encePairwiseOnDemand]: 454/476 looper letters, 124 selfloop transitions, 18 changer transitions 0/439 dead transitions. [2022-11-16 11:24:12,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 439 transitions, 1226 flow [2022-11-16 11:24:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2086 transitions. [2022-11-16 11:24:12,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303921568627451 [2022-11-16 11:24:12,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2086 transitions. [2022-11-16 11:24:12,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2086 transitions. [2022-11-16 11:24:12,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:12,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2086 transitions. [2022-11-16 11:24:12,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 347.6666666666667) internal successors, (2086), 6 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:12,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:12,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:12,860 INFO L175 Difference]: Start difference. First operand has 405 places, 423 transitions, 910 flow. Second operand 6 states and 2086 transitions. [2022-11-16 11:24:12,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 439 transitions, 1226 flow [2022-11-16 11:24:12,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 439 transitions, 1198 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:12,876 INFO L231 Difference]: Finished difference. Result has 407 places, 427 transitions, 950 flow [2022-11-16 11:24:12,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=950, PETRI_PLACES=407, PETRI_TRANSITIONS=427} [2022-11-16 11:24:12,879 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, -12 predicate places. [2022-11-16 11:24:12,879 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 427 transitions, 950 flow [2022-11-16 11:24:12,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:12,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:12,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:12,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:24:12,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2128301227, now seen corresponding path program 1 times [2022-11-16 11:24:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129747103] [2022-11-16 11:24:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:24:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:13,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129747103] [2022-11-16 11:24:13,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129747103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:13,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552478007] [2022-11-16 11:24:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:13,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:13,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:13,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:13,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:24:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:14,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:24:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:24:14,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:24:14,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552478007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:14,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:24:14,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:24:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737027695] [2022-11-16 11:24:14,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:24:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:24:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:14,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-16 11:24:15,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 427 transitions, 950 flow. Second operand has 15 states, 15 states have (on average 324.6666666666667) internal successors, (4870), 15 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:15,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:15,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-16 11:24:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:16,756 INFO L130 PetriNetUnfolder]: 103/672 cut-off events. [2022-11-16 11:24:16,757 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-16 11:24:16,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 672 events. 103/672 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1102 event pairs, 15 based on Foata normal form. 12/632 useless extension candidates. Maximal degree in co-relation 1019. Up to 150 conditions per place. [2022-11-16 11:24:16,762 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 120 selfloop transitions, 78 changer transitions 0/487 dead transitions. [2022-11-16 11:24:16,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 487 transitions, 1474 flow [2022-11-16 11:24:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:24:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 11:24:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 6214 transitions. [2022-11-16 11:24:16,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6870853604599735 [2022-11-16 11:24:16,789 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 6214 transitions. [2022-11-16 11:24:16,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 6214 transitions. [2022-11-16 11:24:16,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:16,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 6214 transitions. [2022-11-16 11:24:16,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 327.05263157894734) internal successors, (6214), 19 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:16,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 476.0) internal successors, (9520), 20 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:16,845 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 476.0) internal successors, (9520), 20 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:16,845 INFO L175 Difference]: Start difference. First operand has 407 places, 427 transitions, 950 flow. Second operand 19 states and 6214 transitions. [2022-11-16 11:24:16,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 487 transitions, 1474 flow [2022-11-16 11:24:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 487 transitions, 1446 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:16,870 INFO L231 Difference]: Finished difference. Result has 428 places, 463 transitions, 1317 flow [2022-11-16 11:24:16,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1317, PETRI_PLACES=428, PETRI_TRANSITIONS=463} [2022-11-16 11:24:16,874 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 9 predicate places. [2022-11-16 11:24:16,874 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 463 transitions, 1317 flow [2022-11-16 11:24:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 324.6666666666667) internal successors, (4870), 15 states have internal predecessors, (4870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:16,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:16,878 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:16,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:17,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash 754253237, now seen corresponding path program 2 times [2022-11-16 11:24:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:17,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629056608] [2022-11-16 11:24:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:17,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:24:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629056608] [2022-11-16 11:24:18,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629056608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:18,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691897564] [2022-11-16 11:24:18,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:18,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:18,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:24:18,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:24:18,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:18,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:24:18,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:19,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:24:19,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-16 11:24:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 11:24:19,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:19,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691897564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:19,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:19,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-16 11:24:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728816924] [2022-11-16 11:24:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:19,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:19,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:19,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 476 [2022-11-16 11:24:19,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 463 transitions, 1317 flow. Second operand has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:19,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:19,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 476 [2022-11-16 11:24:19,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:20,486 INFO L130 PetriNetUnfolder]: 230/948 cut-off events. [2022-11-16 11:24:20,486 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-16 11:24:20,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 948 events. 230/948 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2828 event pairs, 45 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 1549. Up to 332 conditions per place. [2022-11-16 11:24:20,494 INFO L137 encePairwiseOnDemand]: 469/476 looper letters, 129 selfloop transitions, 2 changer transitions 9/489 dead transitions. [2022-11-16 11:24:20,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 489 transitions, 1653 flow [2022-11-16 11:24:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2031 transitions. [2022-11-16 11:24:20,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7111344537815126 [2022-11-16 11:24:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2031 transitions. [2022-11-16 11:24:20,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2031 transitions. [2022-11-16 11:24:20,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:20,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2031 transitions. [2022-11-16 11:24:20,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.5) internal successors, (2031), 6 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,546 INFO L175 Difference]: Start difference. First operand has 428 places, 463 transitions, 1317 flow. Second operand 6 states and 2031 transitions. [2022-11-16 11:24:20,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 489 transitions, 1653 flow [2022-11-16 11:24:20,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 489 transitions, 1592 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-11-16 11:24:20,568 INFO L231 Difference]: Finished difference. Result has 430 places, 463 transitions, 1272 flow [2022-11-16 11:24:20,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1272, PETRI_PLACES=430, PETRI_TRANSITIONS=463} [2022-11-16 11:24:20,571 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 11 predicate places. [2022-11-16 11:24:20,572 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 463 transitions, 1272 flow [2022-11-16 11:24:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:20,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:20,574 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:20,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:20,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:20,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -725778987, now seen corresponding path program 3 times [2022-11-16 11:24:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:20,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105298295] [2022-11-16 11:24:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:24:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105298295] [2022-11-16 11:24:21,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105298295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:21,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084787082] [2022-11-16 11:24:21,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:24:21,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:21,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:21,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:24:22,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:24:22,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:24:22,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:22,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:24:22,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2022-11-16 11:24:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-16 11:24:22,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:22,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084787082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:22,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:22,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-16 11:24:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278389199] [2022-11-16 11:24:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:24:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:24:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:22,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 476 [2022-11-16 11:24:22,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 463 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:22,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:22,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 476 [2022-11-16 11:24:22,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:24,326 INFO L130 PetriNetUnfolder]: 266/1029 cut-off events. [2022-11-16 11:24:24,326 INFO L131 PetriNetUnfolder]: For 152/163 co-relation queries the response was YES. [2022-11-16 11:24:24,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1029 events. 266/1029 cut-off events. For 152/163 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3444 event pairs, 48 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 1719. Up to 362 conditions per place. [2022-11-16 11:24:24,338 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 130 selfloop transitions, 3 changer transitions 9/491 dead transitions. [2022-11-16 11:24:24,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 491 transitions, 1633 flow [2022-11-16 11:24:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:24:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:24:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2033 transitions. [2022-11-16 11:24:24,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7118347338935574 [2022-11-16 11:24:24,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2033 transitions. [2022-11-16 11:24:24,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2033 transitions. [2022-11-16 11:24:24,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:24,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2033 transitions. [2022-11-16 11:24:24,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.8333333333333) internal successors, (2033), 6 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:24,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:24,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:24,362 INFO L175 Difference]: Start difference. First operand has 430 places, 463 transitions, 1272 flow. Second operand 6 states and 2033 transitions. [2022-11-16 11:24:24,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 491 transitions, 1633 flow [2022-11-16 11:24:24,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 491 transitions, 1613 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:24,381 INFO L231 Difference]: Finished difference. Result has 432 places, 464 transitions, 1287 flow [2022-11-16 11:24:24,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1287, PETRI_PLACES=432, PETRI_TRANSITIONS=464} [2022-11-16 11:24:24,386 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 13 predicate places. [2022-11-16 11:24:24,386 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 464 transitions, 1287 flow [2022-11-16 11:24:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.6666666666667) internal successors, (1984), 6 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:24,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:24,389 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:24,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:24,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:24:24,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash -372641885, now seen corresponding path program 4 times [2022-11-16 11:24:24,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:24,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958952368] [2022-11-16 11:24:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:24:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958952368] [2022-11-16 11:24:25,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958952368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:25,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841390725] [2022-11-16 11:24:25,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:24:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:25,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:25,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:25,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:24:26,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:24:26,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:26,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:24:26,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:24:26,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:24:26,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841390725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:26,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:24:26,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 11:24:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093041240] [2022-11-16 11:24:26,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:24:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:24:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:24:26,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-16 11:24:26,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 464 transitions, 1287 flow. Second operand has 22 states, 22 states have (on average 322.8181818181818) internal successors, (7102), 22 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:26,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:24:26,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-16 11:24:26,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:24:29,256 INFO L130 PetriNetUnfolder]: 124/933 cut-off events. [2022-11-16 11:24:29,256 INFO L131 PetriNetUnfolder]: For 266/275 co-relation queries the response was YES. [2022-11-16 11:24:29,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 933 events. 124/933 cut-off events. For 266/275 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2304 event pairs, 21 based on Foata normal form. 16/874 useless extension candidates. Maximal degree in co-relation 1677. Up to 188 conditions per place. [2022-11-16 11:24:29,274 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 152 selfloop transitions, 126 changer transitions 0/568 dead transitions. [2022-11-16 11:24:29,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 568 transitions, 2267 flow [2022-11-16 11:24:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:24:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 11:24:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 10090 transitions. [2022-11-16 11:24:29,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6837896448902141 [2022-11-16 11:24:29,315 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 10090 transitions. [2022-11-16 11:24:29,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 10090 transitions. [2022-11-16 11:24:29,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:24:29,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 10090 transitions. [2022-11-16 11:24:29,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 325.48387096774195) internal successors, (10090), 31 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 476.0) internal successors, (15232), 32 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,389 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 476.0) internal successors, (15232), 32 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,389 INFO L175 Difference]: Start difference. First operand has 432 places, 464 transitions, 1287 flow. Second operand 31 states and 10090 transitions. [2022-11-16 11:24:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 568 transitions, 2267 flow [2022-11-16 11:24:29,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 568 transitions, 2258 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 11:24:29,409 INFO L231 Difference]: Finished difference. Result has 461 places, 520 transitions, 1961 flow [2022-11-16 11:24:29,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1961, PETRI_PLACES=461, PETRI_TRANSITIONS=520} [2022-11-16 11:24:29,412 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 42 predicate places. [2022-11-16 11:24:29,413 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 520 transitions, 1961 flow [2022-11-16 11:24:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 322.8181818181818) internal successors, (7102), 22 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:24:29,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:24:29,418 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:29,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:29,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:29,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:24:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2068503613, now seen corresponding path program 5 times [2022-11-16 11:24:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:29,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893732395] [2022-11-16 11:24:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:29,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-16 11:24:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893732395] [2022-11-16 11:24:31,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893732395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648875476] [2022-11-16 11:24:31,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:24:31,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:31,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:31,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:31,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:25:30,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-16 11:25:30,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:30,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:25:30,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-16 11:25:31,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-16 11:25:31,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648875476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:31,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:31,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-11-16 11:25:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473997164] [2022-11-16 11:25:31,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:31,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-16 11:25:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-16 11:25:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 11:25:31,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-16 11:25:31,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 520 transitions, 1961 flow. Second operand has 39 states, 39 states have (on average 320.87179487179486) internal successors, (12514), 39 states have internal predecessors, (12514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:31,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-16 11:25:31,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:33,982 INFO L130 PetriNetUnfolder]: 124/1017 cut-off events. [2022-11-16 11:25:33,983 INFO L131 PetriNetUnfolder]: For 603/612 co-relation queries the response was YES. [2022-11-16 11:25:33,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 1017 events. 124/1017 cut-off events. For 603/612 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2295 event pairs, 21 based on Foata normal form. 12/954 useless extension candidates. Maximal degree in co-relation 2168. Up to 173 conditions per place. [2022-11-16 11:25:33,990 INFO L137 encePairwiseOnDemand]: 448/476 looper letters, 190 selfloop transitions, 114 changer transitions 0/594 dead transitions. [2022-11-16 11:25:33,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 594 transitions, 3025 flow [2022-11-16 11:25:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:25:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 11:25:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 11620 transitions. [2022-11-16 11:25:34,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6781045751633987 [2022-11-16 11:25:34,012 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 11620 transitions. [2022-11-16 11:25:34,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 11620 transitions. [2022-11-16 11:25:34,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:34,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 11620 transitions. [2022-11-16 11:25:34,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 322.77777777777777) internal successors, (11620), 36 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:34,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 476.0) internal successors, (17612), 37 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:34,071 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 476.0) internal successors, (17612), 37 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:34,071 INFO L175 Difference]: Start difference. First operand has 461 places, 520 transitions, 1961 flow. Second operand 36 states and 11620 transitions. [2022-11-16 11:25:34,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 594 transitions, 3025 flow [2022-11-16 11:25:34,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 594 transitions, 2812 flow, removed 52 selfloop flow, removed 16 redundant places. [2022-11-16 11:25:34,088 INFO L231 Difference]: Finished difference. Result has 487 places, 558 transitions, 2331 flow [2022-11-16 11:25:34,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2331, PETRI_PLACES=487, PETRI_TRANSITIONS=558} [2022-11-16 11:25:34,090 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 68 predicate places. [2022-11-16 11:25:34,090 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 558 transitions, 2331 flow [2022-11-16 11:25:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 320.87179487179486) internal successors, (12514), 39 states have internal predecessors, (12514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:34,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:34,095 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:34,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:34,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1894043669, now seen corresponding path program 6 times [2022-11-16 11:25:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:34,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953427621] [2022-11-16 11:25:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:34,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-16 11:25:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953427621] [2022-11-16 11:25:36,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953427621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285225837] [2022-11-16 11:25:36,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:25:36,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:36,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:36,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:36,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:25:37,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-16 11:25:37,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:37,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 11:25:37,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:40,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:40,991 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:25:40,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2022-11-16 11:25:41,096 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-11-16 11:25:41,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2022-11-16 11:25:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2022-11-16 11:25:41,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:41,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285225837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:41,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:25:41,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [27] total 43 [2022-11-16 11:25:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949452856] [2022-11-16 11:25:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:41,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:25:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:25:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 11:25:41,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 476 [2022-11-16 11:25:41,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 558 transitions, 2331 flow. Second operand has 18 states, 18 states have (on average 259.6666666666667) internal successors, (4674), 18 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:41,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:41,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 476 [2022-11-16 11:25:41,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:44,533 INFO L130 PetriNetUnfolder]: 297/1342 cut-off events. [2022-11-16 11:25:44,534 INFO L131 PetriNetUnfolder]: For 714/742 co-relation queries the response was YES. [2022-11-16 11:25:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 1342 events. 297/1342 cut-off events. For 714/742 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4373 event pairs, 69 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 2747. Up to 281 conditions per place. [2022-11-16 11:25:44,545 INFO L137 encePairwiseOnDemand]: 417/476 looper letters, 141 selfloop transitions, 55 changer transitions 8/585 dead transitions. [2022-11-16 11:25:44,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 585 transitions, 2806 flow [2022-11-16 11:25:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:25:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 11:25:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6480 transitions. [2022-11-16 11:25:44,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5445378151260504 [2022-11-16 11:25:44,557 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6480 transitions. [2022-11-16 11:25:44,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6480 transitions. [2022-11-16 11:25:44,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:44,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6480 transitions. [2022-11-16 11:25:44,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 259.2) internal successors, (6480), 25 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:44,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 476.0) internal successors, (12376), 26 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:44,596 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 476.0) internal successors, (12376), 26 states have internal predecessors, (12376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:44,596 INFO L175 Difference]: Start difference. First operand has 487 places, 558 transitions, 2331 flow. Second operand 25 states and 6480 transitions. [2022-11-16 11:25:44,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 585 transitions, 2806 flow [2022-11-16 11:25:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 585 transitions, 2681 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:44,619 INFO L231 Difference]: Finished difference. Result has 512 places, 558 transitions, 2326 flow [2022-11-16 11:25:44,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2326, PETRI_PLACES=512, PETRI_TRANSITIONS=558} [2022-11-16 11:25:44,622 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 93 predicate places. [2022-11-16 11:25:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 558 transitions, 2326 flow [2022-11-16 11:25:44,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 259.6666666666667) internal successors, (4674), 18 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:44,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:44,625 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:44,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:25:44,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash 26363009, now seen corresponding path program 1 times [2022-11-16 11:25:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:44,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430749421] [2022-11-16 11:25:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-16 11:25:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430749421] [2022-11-16 11:25:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430749421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966269169] [2022-11-16 11:25:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:46,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:46,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:46,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:46,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:25:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:47,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:25:47,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-16 11:25:48,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-16 11:25:49,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966269169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:49,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:25:49,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-11-16 11:25:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143292576] [2022-11-16 11:25:49,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 11:25:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 11:25:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=2252, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 11:25:49,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 476 [2022-11-16 11:25:49,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 558 transitions, 2326 flow. Second operand has 54 states, 54 states have (on average 320.27777777777777) internal successors, (17295), 54 states have internal predecessors, (17295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:49,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:49,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 476 [2022-11-16 11:25:49,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:51,994 INFO L130 PetriNetUnfolder]: 139/1108 cut-off events. [2022-11-16 11:25:51,995 INFO L131 PetriNetUnfolder]: For 1127/1141 co-relation queries the response was YES. [2022-11-16 11:25:51,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 1108 events. 139/1108 cut-off events. For 1127/1141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2726 event pairs, 30 based on Foata normal form. 4/1030 useless extension candidates. Maximal degree in co-relation 2450. Up to 200 conditions per place. [2022-11-16 11:25:52,004 INFO L137 encePairwiseOnDemand]: 448/476 looper letters, 198 selfloop transitions, 126 changer transitions 0/614 dead transitions. [2022-11-16 11:25:52,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 614 transitions, 3334 flow [2022-11-16 11:25:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 11:25:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 11:25:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 13528 transitions. [2022-11-16 11:25:52,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6766706682673069 [2022-11-16 11:25:52,086 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 13528 transitions. [2022-11-16 11:25:52,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 13528 transitions. [2022-11-16 11:25:52,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:52,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 13528 transitions. [2022-11-16 11:25:52,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 322.0952380952381) internal successors, (13528), 42 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 476.0) internal successors, (20468), 43 states have internal predecessors, (20468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,141 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 476.0) internal successors, (20468), 43 states have internal predecessors, (20468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,141 INFO L175 Difference]: Start difference. First operand has 512 places, 558 transitions, 2326 flow. Second operand 42 states and 13528 transitions. [2022-11-16 11:25:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 614 transitions, 3334 flow [2022-11-16 11:25:52,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 614 transitions, 3220 flow, removed 3 selfloop flow, removed 23 redundant places. [2022-11-16 11:25:52,170 INFO L231 Difference]: Finished difference. Result has 530 places, 572 transitions, 2635 flow [2022-11-16 11:25:52,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2635, PETRI_PLACES=530, PETRI_TRANSITIONS=572} [2022-11-16 11:25:52,173 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 111 predicate places. [2022-11-16 11:25:52,174 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 572 transitions, 2635 flow [2022-11-16 11:25:52,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 320.27777777777777) internal successors, (17295), 54 states have internal predecessors, (17295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:52,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:52,177 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:52,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:52,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:25:52,387 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash 22016546, now seen corresponding path program 1 times [2022-11-16 11:25:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019550376] [2022-11-16 11:25:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:52,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:25:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:53,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019550376] [2022-11-16 11:25:53,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019550376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:53,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:53,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75411185] [2022-11-16 11:25:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:53,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:53,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:53,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 476 [2022-11-16 11:25:53,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 572 transitions, 2635 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:53,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:53,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 476 [2022-11-16 11:25:53,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:53,955 INFO L130 PetriNetUnfolder]: 151/1150 cut-off events. [2022-11-16 11:25:53,956 INFO L131 PetriNetUnfolder]: For 994/1008 co-relation queries the response was YES. [2022-11-16 11:25:53,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1150 events. 151/1150 cut-off events. For 994/1008 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3107 event pairs, 30 based on Foata normal form. 7/1075 useless extension candidates. Maximal degree in co-relation 2279. Up to 188 conditions per place. [2022-11-16 11:25:53,964 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 39 selfloop transitions, 2 changer transitions 0/585 dead transitions. [2022-11-16 11:25:53,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 585 transitions, 2754 flow [2022-11-16 11:25:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1296 transitions. [2022-11-16 11:25:53,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907563025210084 [2022-11-16 11:25:53,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1296 transitions. [2022-11-16 11:25:53,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1296 transitions. [2022-11-16 11:25:53,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:53,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1296 transitions. [2022-11-16 11:25:53,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:53,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:53,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:53,976 INFO L175 Difference]: Start difference. First operand has 530 places, 572 transitions, 2635 flow. Second operand 3 states and 1296 transitions. [2022-11-16 11:25:53,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 585 transitions, 2754 flow [2022-11-16 11:25:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 585 transitions, 2525 flow, removed 8 selfloop flow, removed 33 redundant places. [2022-11-16 11:25:53,998 INFO L231 Difference]: Finished difference. Result has 500 places, 573 transitions, 2418 flow [2022-11-16 11:25:53,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2418, PETRI_PLACES=500, PETRI_TRANSITIONS=573} [2022-11-16 11:25:54,000 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 81 predicate places. [2022-11-16 11:25:54,000 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 573 transitions, 2418 flow [2022-11-16 11:25:54,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:54,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:54,001 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:54,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:25:54,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 931101059, now seen corresponding path program 2 times [2022-11-16 11:25:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:54,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531666426] [2022-11-16 11:25:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:25:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531666426] [2022-11-16 11:25:54,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531666426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:54,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:54,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318381861] [2022-11-16 11:25:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:54,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:54,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:54,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:54,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:54,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 476 [2022-11-16 11:25:54,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 573 transitions, 2418 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:54,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:54,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 476 [2022-11-16 11:25:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:55,704 INFO L130 PetriNetUnfolder]: 166/1215 cut-off events. [2022-11-16 11:25:55,704 INFO L131 PetriNetUnfolder]: For 929/943 co-relation queries the response was YES. [2022-11-16 11:25:55,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1215 events. 166/1215 cut-off events. For 929/943 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3720 event pairs, 35 based on Foata normal form. 10/1129 useless extension candidates. Maximal degree in co-relation 2282. Up to 206 conditions per place. [2022-11-16 11:25:55,714 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 41 selfloop transitions, 2 changer transitions 0/587 dead transitions. [2022-11-16 11:25:55,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 587 transitions, 2555 flow [2022-11-16 11:25:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1296 transitions. [2022-11-16 11:25:55,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907563025210084 [2022-11-16 11:25:55,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1296 transitions. [2022-11-16 11:25:55,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1296 transitions. [2022-11-16 11:25:55,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:55,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1296 transitions. [2022-11-16 11:25:55,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 432.0) internal successors, (1296), 3 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,724 INFO L175 Difference]: Start difference. First operand has 500 places, 573 transitions, 2418 flow. Second operand 3 states and 1296 transitions. [2022-11-16 11:25:55,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 587 transitions, 2555 flow [2022-11-16 11:25:55,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 587 transitions, 2551 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:55,749 INFO L231 Difference]: Finished difference. Result has 502 places, 574 transitions, 2428 flow [2022-11-16 11:25:55,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2428, PETRI_PLACES=502, PETRI_TRANSITIONS=574} [2022-11-16 11:25:55,751 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 83 predicate places. [2022-11-16 11:25:55,751 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 574 transitions, 2428 flow [2022-11-16 11:25:55,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:55,752 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:25:55,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1553216380, now seen corresponding path program 1 times [2022-11-16 11:25:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:55,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050764279] [2022-11-16 11:25:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:55,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-16 11:25:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:57,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050764279] [2022-11-16 11:25:57,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050764279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:57,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:57,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427946914] [2022-11-16 11:25:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:25:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:25:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:25:57,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 476 [2022-11-16 11:25:57,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 574 transitions, 2428 flow. Second operand has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:57,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:57,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 476 [2022-11-16 11:25:57,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:58,810 INFO L130 PetriNetUnfolder]: 380/1707 cut-off events. [2022-11-16 11:25:58,810 INFO L131 PetriNetUnfolder]: For 1213/1249 co-relation queries the response was YES. [2022-11-16 11:25:58,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 1707 events. 380/1707 cut-off events. For 1213/1249 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7585 event pairs, 124 based on Foata normal form. 28/1559 useless extension candidates. Maximal degree in co-relation 3358. Up to 523 conditions per place. [2022-11-16 11:25:58,823 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 59 selfloop transitions, 3 changer transitions 1/590 dead transitions. [2022-11-16 11:25:58,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 590 transitions, 2604 flow [2022-11-16 11:25:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:25:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:25:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2022-11-16 11:25:58,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-11-16 11:25:58,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2022-11-16 11:25:58,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2022-11-16 11:25:58,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:58,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2022-11-16 11:25:58,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:58,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:58,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:58,832 INFO L175 Difference]: Start difference. First operand has 502 places, 574 transitions, 2428 flow. Second operand 3 states and 1274 transitions. [2022-11-16 11:25:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 590 transitions, 2604 flow [2022-11-16 11:25:58,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 590 transitions, 2601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:58,855 INFO L231 Difference]: Finished difference. Result has 504 places, 575 transitions, 2461 flow [2022-11-16 11:25:58,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2461, PETRI_PLACES=504, PETRI_TRANSITIONS=575} [2022-11-16 11:25:58,856 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 85 predicate places. [2022-11-16 11:25:58,857 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 575 transitions, 2461 flow [2022-11-16 11:25:58,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:58,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:58,858 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:58,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:25:58,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:25:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash 97048366, now seen corresponding path program 2 times [2022-11-16 11:25:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701283962] [2022-11-16 11:25:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-16 11:26:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701283962] [2022-11-16 11:26:00,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701283962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:00,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:00,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866951486] [2022-11-16 11:26:00,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:00,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:26:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:26:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:26:00,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 476 [2022-11-16 11:26:00,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 575 transitions, 2461 flow. Second operand has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:00,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:00,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 476 [2022-11-16 11:26:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:01,833 INFO L130 PetriNetUnfolder]: 427/1828 cut-off events. [2022-11-16 11:26:01,834 INFO L131 PetriNetUnfolder]: For 1759/1911 co-relation queries the response was YES. [2022-11-16 11:26:01,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1828 events. 427/1828 cut-off events. For 1759/1911 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8437 event pairs, 47 based on Foata normal form. 18/1641 useless extension candidates. Maximal degree in co-relation 3745. Up to 509 conditions per place. [2022-11-16 11:26:01,856 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 57 selfloop transitions, 14 changer transitions 0/598 dead transitions. [2022-11-16 11:26:01,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 598 transitions, 2694 flow [2022-11-16 11:26:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:26:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:26:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2022-11-16 11:26:01,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-11-16 11:26:01,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2022-11-16 11:26:01,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2022-11-16 11:26:01,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:01,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2022-11-16 11:26:01,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:01,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:01,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:01,887 INFO L175 Difference]: Start difference. First operand has 504 places, 575 transitions, 2461 flow. Second operand 3 states and 1274 transitions. [2022-11-16 11:26:01,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 598 transitions, 2694 flow [2022-11-16 11:26:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 598 transitions, 2691 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:01,919 INFO L231 Difference]: Finished difference. Result has 507 places, 588 transitions, 2606 flow [2022-11-16 11:26:01,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2606, PETRI_PLACES=507, PETRI_TRANSITIONS=588} [2022-11-16 11:26:01,922 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 88 predicate places. [2022-11-16 11:26:01,922 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 588 transitions, 2606 flow [2022-11-16 11:26:01,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 410.6666666666667) internal successors, (1232), 3 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:01,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:01,923 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:01,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:26:01,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:26:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1249404278, now seen corresponding path program 3 times [2022-11-16 11:26:01,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:01,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885578615] [2022-11-16 11:26:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-16 11:26:05,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885578615] [2022-11-16 11:26:05,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885578615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:05,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:05,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:26:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410211788] [2022-11-16 11:26:05,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:05,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:26:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:26:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:26:05,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 476 [2022-11-16 11:26:05,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 588 transitions, 2606 flow. Second operand has 15 states, 15 states have (on average 340.06666666666666) internal successors, (5101), 15 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:05,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:05,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 476 [2022-11-16 11:26:05,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:07,821 INFO L130 PetriNetUnfolder]: 434/1789 cut-off events. [2022-11-16 11:26:07,821 INFO L131 PetriNetUnfolder]: For 2686/3192 co-relation queries the response was YES. [2022-11-16 11:26:07,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4235 conditions, 1789 events. 434/1789 cut-off events. For 2686/3192 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8056 event pairs, 67 based on Foata normal form. 25/1604 useless extension candidates. Maximal degree in co-relation 4201. Up to 567 conditions per place. [2022-11-16 11:26:07,835 INFO L137 encePairwiseOnDemand]: 410/476 looper letters, 70 selfloop transitions, 65 changer transitions 1/598 dead transitions. [2022-11-16 11:26:07,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 598 transitions, 2940 flow [2022-11-16 11:26:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:26:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:26:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7475 transitions. [2022-11-16 11:26:07,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7138082505729565 [2022-11-16 11:26:07,845 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7475 transitions. [2022-11-16 11:26:07,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7475 transitions. [2022-11-16 11:26:07,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:07,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7475 transitions. [2022-11-16 11:26:07,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 339.77272727272725) internal successors, (7475), 22 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,876 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,876 INFO L175 Difference]: Start difference. First operand has 507 places, 588 transitions, 2606 flow. Second operand 22 states and 7475 transitions. [2022-11-16 11:26:07,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 598 transitions, 2940 flow [2022-11-16 11:26:07,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 598 transitions, 2878 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-16 11:26:07,901 INFO L231 Difference]: Finished difference. Result has 527 places, 593 transitions, 2751 flow [2022-11-16 11:26:07,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2751, PETRI_PLACES=527, PETRI_TRANSITIONS=593} [2022-11-16 11:26:07,902 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 108 predicate places. [2022-11-16 11:26:07,902 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 593 transitions, 2751 flow [2022-11-16 11:26:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 340.06666666666666) internal successors, (5101), 15 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:07,904 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:07,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:26:07,904 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:26:07,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 512425348, now seen corresponding path program 1 times [2022-11-16 11:26:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:07,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957755266] [2022-11-16 11:26:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2022-11-16 11:26:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957755266] [2022-11-16 11:26:12,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957755266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:12,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:12,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:26:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902490953] [2022-11-16 11:26:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:12,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:26:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:26:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:12,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 476 [2022-11-16 11:26:12,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 593 transitions, 2751 flow. Second operand has 16 states, 16 states have (on average 339.6875) internal successors, (5435), 16 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:12,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:12,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 476 [2022-11-16 11:26:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:14,311 INFO L130 PetriNetUnfolder]: 409/1797 cut-off events. [2022-11-16 11:26:14,312 INFO L131 PetriNetUnfolder]: For 2342/2466 co-relation queries the response was YES. [2022-11-16 11:26:14,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 1797 events. 409/1797 cut-off events. For 2342/2466 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8159 event pairs, 98 based on Foata normal form. 15/1587 useless extension candidates. Maximal degree in co-relation 4061. Up to 561 conditions per place. [2022-11-16 11:26:14,325 INFO L137 encePairwiseOnDemand]: 416/476 looper letters, 76 selfloop transitions, 53 changer transitions 6/597 dead transitions. [2022-11-16 11:26:14,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 597 transitions, 3031 flow [2022-11-16 11:26:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:26:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:26:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7467 transitions. [2022-11-16 11:26:14,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.713044308632544 [2022-11-16 11:26:14,334 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7467 transitions. [2022-11-16 11:26:14,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7467 transitions. [2022-11-16 11:26:14,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:14,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7467 transitions. [2022-11-16 11:26:14,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 339.40909090909093) internal successors, (7467), 22 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:14,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:14,370 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 476.0) internal successors, (10948), 23 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:14,371 INFO L175 Difference]: Start difference. First operand has 527 places, 593 transitions, 2751 flow. Second operand 22 states and 7467 transitions. [2022-11-16 11:26:14,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 597 transitions, 3031 flow [2022-11-16 11:26:14,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 597 transitions, 2921 flow, removed 7 selfloop flow, removed 20 redundant places. [2022-11-16 11:26:14,403 INFO L231 Difference]: Finished difference. Result has 529 places, 591 transitions, 2744 flow [2022-11-16 11:26:14,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2744, PETRI_PLACES=529, PETRI_TRANSITIONS=591} [2022-11-16 11:26:14,405 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 110 predicate places. [2022-11-16 11:26:14,405 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 591 transitions, 2744 flow [2022-11-16 11:26:14,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 339.6875) internal successors, (5435), 16 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:14,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:14,407 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:14,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:26:14,408 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:26:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash -754316817, now seen corresponding path program 1 times [2022-11-16 11:26:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654592703] [2022-11-16 11:26:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2022-11-16 11:26:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:36,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654592703] [2022-11-16 11:26:36,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654592703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:36,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005753306] [2022-11-16 11:26:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:36,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:36,834 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:36,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:26:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:37,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:26:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:43,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:26:43,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 146 treesize of output 335 [2022-11-16 11:26:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:26:44,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:28,201 WARN L233 SmtUtils]: Spent 36.25s on a formula simplification. DAG size of input: 72 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:27:29,308 INFO L321 Elim1Store]: treesize reduction 15, result has 92.6 percent of original size [2022-11-16 11:27:29,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 703 treesize of output 683 [2022-11-16 11:27:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:27:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005753306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:32,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:27:32,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 10] total 38 [2022-11-16 11:27:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773766763] [2022-11-16 11:27:32,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:27:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:27:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:27:32,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 476 [2022-11-16 11:27:32,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 591 transitions, 2744 flow. Second operand has 38 states, 38 states have (on average 193.89473684210526) internal successors, (7368), 38 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:32,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:32,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 476 [2022-11-16 11:27:32,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:41,221 INFO L130 PetriNetUnfolder]: 649/2557 cut-off events. [2022-11-16 11:27:41,221 INFO L131 PetriNetUnfolder]: For 2518/2597 co-relation queries the response was YES. [2022-11-16 11:27:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5929 conditions, 2557 events. 649/2557 cut-off events. For 2518/2597 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15199 event pairs, 75 based on Foata normal form. 5/2250 useless extension candidates. Maximal degree in co-relation 5894. Up to 458 conditions per place. [2022-11-16 11:27:41,250 INFO L137 encePairwiseOnDemand]: 370/476 looper letters, 427 selfloop transitions, 132 changer transitions 7/741 dead transitions. [2022-11-16 11:27:41,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 741 transitions, 4406 flow [2022-11-16 11:27:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:27:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:27:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7619 transitions. [2022-11-16 11:27:41,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4104180133591898 [2022-11-16 11:27:41,262 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7619 transitions. [2022-11-16 11:27:41,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7619 transitions. [2022-11-16 11:27:41,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:41,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7619 transitions. [2022-11-16 11:27:41,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 195.35897435897436) internal successors, (7619), 39 states have internal predecessors, (7619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 476.0) internal successors, (19040), 40 states have internal predecessors, (19040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,298 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 476.0) internal successors, (19040), 40 states have internal predecessors, (19040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,298 INFO L175 Difference]: Start difference. First operand has 529 places, 591 transitions, 2744 flow. Second operand 39 states and 7619 transitions. [2022-11-16 11:27:41,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 741 transitions, 4406 flow [2022-11-16 11:27:41,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 741 transitions, 4258 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-11-16 11:27:41,329 INFO L231 Difference]: Finished difference. Result has 552 places, 627 transitions, 3101 flow [2022-11-16 11:27:41,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3101, PETRI_PLACES=552, PETRI_TRANSITIONS=627} [2022-11-16 11:27:41,331 INFO L288 CegarLoopForPetriNet]: 419 programPoint places, 133 predicate places. [2022-11-16 11:27:41,331 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 627 transitions, 3101 flow [2022-11-16 11:27:41,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 193.89473684210526) internal successors, (7368), 38 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:41,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:41,333 INFO L209 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:41,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:41,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:27:41,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:27:41,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash 510055273, now seen corresponding path program 2 times [2022-11-16 11:27:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:41,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774788848] [2022-11-16 11:27:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:28:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774788848] [2022-11-16 11:28:02,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774788848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400195948] [2022-11-16 11:28:02,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:28:02,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:02,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:02,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:02,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a797273-64fd-466c-a019-fce5d6065271/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:28:03,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:28:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:03,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 11:28:03,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:10,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:10,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 60 [2022-11-16 11:28:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-11-16 11:28:10,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:27,299 WARN L233 SmtUtils]: Spent 12.24s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:29:04,686 WARN L233 SmtUtils]: Spent 34.90s on a formula simplification that was a NOOP. DAG size: 1432 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 11:29:04,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:29:04,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 1300 treesize of output 4354