./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ --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 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- 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-dbf71c6-m [2022-10-17 10:35:02,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:35:02,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:35:02,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:35:02,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:35:02,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:35:02,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:35:02,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:35:02,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:35:02,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:35:02,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:35:02,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:35:02,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:35:02,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:35:02,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:35:02,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:35:02,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:35:02,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:35:02,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:35:02,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:35:02,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:35:02,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:35:02,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:35:02,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:35:02,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:35:02,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:35:02,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:35:02,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:35:02,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:35:02,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:35:02,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:35:02,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:35:02,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:35:02,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:35:02,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:35:02,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:35:02,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:35:02,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:35:02,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:35:02,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:35:02,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:35:02,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:35:02,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:35:02,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:35:02,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:35:02,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:35:02,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:35:02,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:35:02,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:35:02,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:35:02,854 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:35:02,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:35:02,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:35:02,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:35:02,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:35:02,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:35:02,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:35:02,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:35:02,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:35:02,867 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:35:02,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:35:02,867 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:35:02,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:35:02,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:35:02,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:35:02,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:35:02,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:35:02,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:35:02,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:35:02,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:35:02,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:35:02,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:35:02,869 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:35:02,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:35:02,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:35:02,870 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_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-10-17 10:35:03,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:35:03,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:35:03,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:35:03,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:35:03,145 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:35:03,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-10-17 10:35:03,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/data/c8b615cd6/94b305da8bd547f99f1c1ae4330b0c4b/FLAG455f88d63 [2022-10-17 10:35:03,653 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:35:03,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-10-17 10:35:03,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/data/c8b615cd6/94b305da8bd547f99f1c1ae4330b0c4b/FLAG455f88d63 [2022-10-17 10:35:04,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/data/c8b615cd6/94b305da8bd547f99f1c1ae4330b0c4b [2022-10-17 10:35:04,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:35:04,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:35:04,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:35:04,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:35:04,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:35:04,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1483a717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04, skipping insertion in model container [2022-10-17 10:35:04,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:35:04,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:35:04,346 WARN L230 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_e2d10b19-c691-466d-9a51-afb1607f0b17/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-10-17 10:35:04,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:35:04,375 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:35:04,429 WARN L230 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_e2d10b19-c691-466d-9a51-afb1607f0b17/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-10-17 10:35:04,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:35:04,462 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:35:04,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04 WrapperNode [2022-10-17 10:35:04,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:35:04,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:04,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:35:04,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:35:04,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,542 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 307 [2022-10-17 10:35:04,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:04,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:35:04,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:35:04,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:35:04,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:35:04,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:35:04,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:35:04,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:35:04,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (1/1) ... [2022-10-17 10:35:04,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:35:04,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:35:04,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:35:04,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:35:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:35:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:35:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:35:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:35:04,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:35:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:35:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:35:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:35:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:35:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:35:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-10-17 10:35:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-10-17 10:35:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:35:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:35:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:35:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:35:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:35:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:35:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:35:04,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:35:04,825 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:35:04,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:35:05,396 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:35:05,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:35:05,630 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:35:05,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:05 BoogieIcfgContainer [2022-10-17 10:35:05,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:35:05,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:35:05,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:35:05,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:35:05,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:35:04" (1/3) ... [2022-10-17 10:35:05,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2900fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:05, skipping insertion in model container [2022-10-17 10:35:05,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:04" (2/3) ... [2022-10-17 10:35:05,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2900fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:05, skipping insertion in model container [2022-10-17 10:35:05,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:05" (3/3) ... [2022-10-17 10:35:05,649 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-10-17 10:35:05,660 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:35:05,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:35:05,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:35:05,671 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:35:05,768 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:35:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 231 transitions, 494 flow [2022-10-17 10:35:05,959 INFO L130 PetriNetUnfolder]: 18/227 cut-off events. [2022-10-17 10:35:05,959 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:35:05,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 227 events. 18/227 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-10-17 10:35:05,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 231 transitions, 494 flow [2022-10-17 10:35:05,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 214 transitions, 452 flow [2022-10-17 10:35:05,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:35:05,998 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;@7b1aa5fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:35:05,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:35:06,107 INFO L130 PetriNetUnfolder]: 18/213 cut-off events. [2022-10-17 10:35:06,107 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:35:06,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:06,108 INFO L208 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] [2022-10-17 10:35:06,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1812017618, now seen corresponding path program 1 times [2022-10-17 10:35:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533287268] [2022-10-17 10:35:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533287268] [2022-10-17 10:35:06,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533287268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:06,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:06,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:35:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284682354] [2022-10-17 10:35:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:35:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:35:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:35:06,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 231 [2022-10-17 10:35:06,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 214 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:06,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:06,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 231 [2022-10-17 10:35:06,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:06,940 INFO L130 PetriNetUnfolder]: 226/753 cut-off events. [2022-10-17 10:35:06,940 INFO L131 PetriNetUnfolder]: For 145/146 co-relation queries the response was YES. [2022-10-17 10:35:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 753 events. 226/753 cut-off events. For 145/146 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3393 event pairs, 121 based on Foata normal form. 197/865 useless extension candidates. Maximal degree in co-relation 906. Up to 306 conditions per place. [2022-10-17 10:35:06,952 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 14 selfloop transitions, 0 changer transitions 6/202 dead transitions. [2022-10-17 10:35:06,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 456 flow [2022-10-17 10:35:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:35:06,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:35:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 434 transitions. [2022-10-17 10:35:06,968 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2022-10-17 10:35:06,968 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 434 transitions. [2022-10-17 10:35:06,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 434 transitions. [2022-10-17 10:35:06,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 434 transitions. [2022-10-17 10:35:06,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:06,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:06,985 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:06,987 INFO L175 Difference]: Start difference. First operand has 209 places, 214 transitions, 452 flow. Second operand 2 states and 434 transitions. [2022-10-17 10:35:06,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 456 flow [2022-10-17 10:35:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 440 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-10-17 10:35:06,999 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 400 flow [2022-10-17 10:35:07,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-10-17 10:35:07,005 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-10-17 10:35:07,006 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 400 flow [2022-10-17 10:35:07,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:07,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:07,007 INFO L208 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] [2022-10-17 10:35:07,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:35:07,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:07,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1217168559, now seen corresponding path program 1 times [2022-10-17 10:35:07,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:07,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240166532] [2022-10-17 10:35:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:07,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240166532] [2022-10-17 10:35:07,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240166532] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:07,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:07,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:35:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105717373] [2022-10-17 10:35:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:07,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:35:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:35:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:35:07,666 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 231 [2022-10-17 10:35:07,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:07,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:07,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 231 [2022-10-17 10:35:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:07,960 INFO L130 PetriNetUnfolder]: 251/831 cut-off events. [2022-10-17 10:35:07,960 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-10-17 10:35:07,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 831 events. 251/831 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3912 event pairs, 32 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 1224. Up to 249 conditions per place. [2022-10-17 10:35:07,971 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 46 selfloop transitions, 3 changer transitions 4/210 dead transitions. [2022-10-17 10:35:07,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 210 transitions, 539 flow [2022-10-17 10:35:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:35:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:35:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2022-10-17 10:35:07,977 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7956709956709956 [2022-10-17 10:35:07,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2022-10-17 10:35:07,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2022-10-17 10:35:07,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:07,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2022-10-17 10:35:07,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:07,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,000 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,000 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 400 flow. Second operand 5 states and 919 transitions. [2022-10-17 10:35:08,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 210 transitions, 539 flow [2022-10-17 10:35:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 539 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:35:08,007 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 423 flow [2022-10-17 10:35:08,008 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-10-17 10:35:08,009 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-10-17 10:35:08,009 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 423 flow [2022-10-17 10:35:08,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:08,010 INFO L208 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] [2022-10-17 10:35:08,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:35:08,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1952248090, now seen corresponding path program 1 times [2022-10-17 10:35:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:08,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457159256] [2022-10-17 10:35:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:08,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:08,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457159256] [2022-10-17 10:35:08,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457159256] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:08,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:08,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:35:08,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031829747] [2022-10-17 10:35:08,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:35:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:35:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:35:08,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-10-17 10:35:08,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:08,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-10-17 10:35:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:08,493 INFO L130 PetriNetUnfolder]: 395/1111 cut-off events. [2022-10-17 10:35:08,493 INFO L131 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2022-10-17 10:35:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 1111 events. 395/1111 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5748 event pairs, 70 based on Foata normal form. 18/1018 useless extension candidates. Maximal degree in co-relation 1903. Up to 431 conditions per place. [2022-10-17 10:35:08,507 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 33 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-10-17 10:35:08,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 211 transitions, 531 flow [2022-10-17 10:35:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:35:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:35:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-10-17 10:35:08,511 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-10-17 10:35:08,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-10-17 10:35:08,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-10-17 10:35:08,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:08,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-10-17 10:35:08,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,517 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 423 flow. Second operand 3 states and 627 transitions. [2022-10-17 10:35:08,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 211 transitions, 531 flow [2022-10-17 10:35:08,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 523 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-10-17 10:35:08,526 INFO L231 Difference]: Finished difference. Result has 201 places, 199 transitions, 430 flow [2022-10-17 10:35:08,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-10-17 10:35:08,528 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -8 predicate places. [2022-10-17 10:35:08,528 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 430 flow [2022-10-17 10:35:08,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:08,529 INFO L208 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] [2022-10-17 10:35:08,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:35:08,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1775578264, now seen corresponding path program 1 times [2022-10-17 10:35:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:08,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080280402] [2022-10-17 10:35:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:08,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:08,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080280402] [2022-10-17 10:35:08,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080280402] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:08,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:08,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:35:08,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695238279] [2022-10-17 10:35:08,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:35:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:35:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:35:08,729 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-10-17 10:35:08,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:08,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:08,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-10-17 10:35:08,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:08,990 INFO L130 PetriNetUnfolder]: 299/1051 cut-off events. [2022-10-17 10:35:08,990 INFO L131 PetriNetUnfolder]: For 359/360 co-relation queries the response was YES. [2022-10-17 10:35:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1051 events. 299/1051 cut-off events. For 359/360 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5549 event pairs, 106 based on Foata normal form. 14/916 useless extension candidates. Maximal degree in co-relation 1776. Up to 353 conditions per place. [2022-10-17 10:35:09,004 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 34 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-10-17 10:35:09,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 212 transitions, 547 flow [2022-10-17 10:35:09,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:35:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:35:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-10-17 10:35:09,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9033189033189033 [2022-10-17 10:35:09,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-10-17 10:35:09,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-10-17 10:35:09,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:09,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-10-17 10:35:09,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,018 INFO L175 Difference]: Start difference. First operand has 201 places, 199 transitions, 430 flow. Second operand 3 states and 626 transitions. [2022-10-17 10:35:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 212 transitions, 547 flow [2022-10-17 10:35:09,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 212 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:35:09,031 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 442 flow [2022-10-17 10:35:09,032 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2022-10-17 10:35:09,034 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-10-17 10:35:09,034 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 442 flow [2022-10-17 10:35:09,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:09,035 INFO L208 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] [2022-10-17 10:35:09,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:35:09,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 267181317, now seen corresponding path program 1 times [2022-10-17 10:35:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:09,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361189429] [2022-10-17 10:35:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:09,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:35:09,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:09,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361189429] [2022-10-17 10:35:09,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361189429] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:09,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:09,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:35:09,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527514681] [2022-10-17 10:35:09,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:09,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:35:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:35:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:35:09,421 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-10-17 10:35:09,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:09,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-10-17 10:35:09,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:09,799 INFO L130 PetriNetUnfolder]: 212/971 cut-off events. [2022-10-17 10:35:09,800 INFO L131 PetriNetUnfolder]: For 388/389 co-relation queries the response was YES. [2022-10-17 10:35:09,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 971 events. 212/971 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4733 event pairs, 98 based on Foata normal form. 12/882 useless extension candidates. Maximal degree in co-relation 1691. Up to 289 conditions per place. [2022-10-17 10:35:09,810 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 63 selfloop transitions, 11 changer transitions 0/230 dead transitions. [2022-10-17 10:35:09,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 230 transitions, 671 flow [2022-10-17 10:35:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:35:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:35:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1671 transitions. [2022-10-17 10:35:09,816 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8037518037518038 [2022-10-17 10:35:09,816 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1671 transitions. [2022-10-17 10:35:09,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1671 transitions. [2022-10-17 10:35:09,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:09,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1671 transitions. [2022-10-17 10:35:09,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.66666666666666) internal successors, (1671), 9 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,831 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,831 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 442 flow. Second operand 9 states and 1671 transitions. [2022-10-17 10:35:09,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 230 transitions, 671 flow [2022-10-17 10:35:09,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 230 transitions, 668 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:35:09,838 INFO L231 Difference]: Finished difference. Result has 212 places, 204 transitions, 482 flow [2022-10-17 10:35:09,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2022-10-17 10:35:09,840 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-10-17 10:35:09,840 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 482 flow [2022-10-17 10:35:09,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:09,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:09,841 INFO L208 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] [2022-10-17 10:35:09,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:35:09,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash -537616131, now seen corresponding path program 1 times [2022-10-17 10:35:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341255533] [2022-10-17 10:35:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:35:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341255533] [2022-10-17 10:35:10,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341255533] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:10,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:10,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:35:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780712907] [2022-10-17 10:35:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:35:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:35:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:35:10,118 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-10-17 10:35:10,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:10,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:10,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-10-17 10:35:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:10,492 INFO L130 PetriNetUnfolder]: 236/1235 cut-off events. [2022-10-17 10:35:10,492 INFO L131 PetriNetUnfolder]: For 512/514 co-relation queries the response was YES. [2022-10-17 10:35:10,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1235 events. 236/1235 cut-off events. For 512/514 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 6817 event pairs, 110 based on Foata normal form. 20/1127 useless extension candidates. Maximal degree in co-relation 2088. Up to 346 conditions per place. [2022-10-17 10:35:10,504 INFO L137 encePairwiseOnDemand]: 223/231 looper letters, 58 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2022-10-17 10:35:10,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 672 flow [2022-10-17 10:35:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:35:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:35:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1303 transitions. [2022-10-17 10:35:10,509 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8058132343846629 [2022-10-17 10:35:10,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1303 transitions. [2022-10-17 10:35:10,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1303 transitions. [2022-10-17 10:35:10,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:10,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1303 transitions. [2022-10-17 10:35:10,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:10,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:10,520 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:10,520 INFO L175 Difference]: Start difference. First operand has 212 places, 204 transitions, 482 flow. Second operand 7 states and 1303 transitions. [2022-10-17 10:35:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 672 flow [2022-10-17 10:35:10,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 222 transitions, 663 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:35:10,527 INFO L231 Difference]: Finished difference. Result has 217 places, 206 transitions, 503 flow [2022-10-17 10:35:10,528 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2022-10-17 10:35:10,529 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 8 predicate places. [2022-10-17 10:35:10,529 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 503 flow [2022-10-17 10:35:10,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:10,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:10,530 INFO L208 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] [2022-10-17 10:35:10,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:35:10,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash -365961287, now seen corresponding path program 1 times [2022-10-17 10:35:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:10,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913121917] [2022-10-17 10:35:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:10,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:35:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:11,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913121917] [2022-10-17 10:35:11,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913121917] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:35:11,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833098933] [2022-10-17 10:35:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:11,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:35:11,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:35:11,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:35:11,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:35:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:11,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:35:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:35:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:35:12,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:35:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:35:12,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833098933] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:35:12,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:35:12,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 21 [2022-10-17 10:35:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714943259] [2022-10-17 10:35:12,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:35:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 10:35:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 10:35:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:35:12,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-10-17 10:35:12,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 503 flow. Second operand has 21 states, 21 states have (on average 184.57142857142858) internal successors, (3876), 21 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:12,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:12,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-10-17 10:35:12,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:23,688 INFO L130 PetriNetUnfolder]: 26043/45580 cut-off events. [2022-10-17 10:35:23,688 INFO L131 PetriNetUnfolder]: For 16115/16115 co-relation queries the response was YES. [2022-10-17 10:35:23,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97197 conditions, 45580 events. 26043/45580 cut-off events. For 16115/16115 co-relation queries the response was YES. Maximal size of possible extension queue 1877. Compared 413835 event pairs, 426 based on Foata normal form. 0/39965 useless extension candidates. Maximal degree in co-relation 97186. Up to 4115 conditions per place. [2022-10-17 10:35:24,099 INFO L137 encePairwiseOnDemand]: 212/231 looper letters, 633 selfloop transitions, 161 changer transitions 4/963 dead transitions. [2022-10-17 10:35:24,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 963 transitions, 4578 flow [2022-10-17 10:35:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-17 10:35:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-10-17 10:35:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 10693 transitions. [2022-10-17 10:35:24,131 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8416371507280598 [2022-10-17 10:35:24,131 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 10693 transitions. [2022-10-17 10:35:24,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 10693 transitions. [2022-10-17 10:35:24,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:24,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 10693 transitions. [2022-10-17 10:35:24,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 194.4181818181818) internal successors, (10693), 55 states have internal predecessors, (10693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:24,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 231.0) internal successors, (12936), 56 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:24,206 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 231.0) internal successors, (12936), 56 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:24,207 INFO L175 Difference]: Start difference. First operand has 217 places, 206 transitions, 503 flow. Second operand 55 states and 10693 transitions. [2022-10-17 10:35:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 963 transitions, 4578 flow [2022-10-17 10:35:24,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 963 transitions, 4566 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:35:24,236 INFO L231 Difference]: Finished difference. Result has 312 places, 378 transitions, 1714 flow [2022-10-17 10:35:24,236 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1714, PETRI_PLACES=312, PETRI_TRANSITIONS=378} [2022-10-17 10:35:24,237 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 103 predicate places. [2022-10-17 10:35:24,237 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 378 transitions, 1714 flow [2022-10-17 10:35:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 184.57142857142858) internal successors, (3876), 21 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:24,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:24,240 INFO L208 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] [2022-10-17 10:35:24,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:35:24,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2d10b19-c691-466d-9a51-afb1607f0b17/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:35:24,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:35:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash 468934433, now seen corresponding path program 2 times [2022-10-17 10:35:24,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:24,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683475679] [2022-10-17 10:35:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:24,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:35:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:25,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683475679] [2022-10-17 10:35:25,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683475679] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:25,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:25,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:35:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33295126] [2022-10-17 10:35:25,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:35:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:35:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:35:25,410 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-10-17 10:35:25,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 378 transitions, 1714 flow. Second operand has 8 states, 8 states have (on average 190.125) internal successors, (1521), 8 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:25,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:25,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-10-17 10:35:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand